Sample records for pavement performance program

  1. Long-Term Pavement Performance Program: Pavement Performance Measures and Forecasting and the Effects of Maintenance and Rehabilitation Strategy on Treatment Effectiveness [Tech Brief

    DOT National Transportation Integrated Search

    2016-08-01

    This document is a technical summary of the Federal Highway Administration Long-Term Pavement Performance Program report, Pavement Performance Measures and Forecasting and the Effects of Maintenance and Rehabilitation Strategy on Treatment Effectiven...

  2. Long-Term Pavement Performance Program falling weight deflectometer maintenance manual

    DOT National Transportation Integrated Search

    2006-12-01

    The Federal Highway Administrations (FHWA) Long-Term Pavement Performance (LTPP) program operates eight Dynatest Model 8000 FWDs to collect deflection data on in-service pavement test sections across North America. LTPP has collected pavement defl...

  3. Analysis relating to pavement material characterizations and their effects on pavement performance.

    DOT National Transportation Integrated Search

    1998-01-01

    This report presents the analysis conducted on relating pavement performance or response measures and design considerations to specific pavement layers utilizing data contained in the Long-Term Pavement Performance Program National Information Manage...

  4. Experimental flexible pavements.

    DOT National Transportation Integrated Search

    1971-01-01

    A program of construction and the performance evaluation of three major Virginia experimental flexible pavements is reported. The objective of the program was to evaluate the performance of pavements incorporating new or timely design concepts and to...

  5. Long-term pavement performance program manual for profile measurements and processing

    DOT National Transportation Integrated Search

    2008-11-01

    This manual describes operational procedures for measuring longitudinal pavement profiles for the Long-Term Pavement Performance (LTPP) Program using the International Cybernetics Corporation (ICC) road profiler, Face Company Dipstick, and the rod an...

  6. Evaluation of Long-Term Pavement Performance (LTTP) Climatic Data for Use in Mechanistic-Empirical Pavement Design Guide (MEPDG) Calibration and Other Pavement Analysis

    DOT National Transportation Integrated Search

    2015-05-01

    Improvements in the Long-Term Pavement Performance (LTPP) Programs climate data are needed to support current and future research into climate effects on pavement materials, design, and performance. The calibration and enhancement of the Mechanist...

  7. Evaluation of experimental flexible pavements : interim report no. 2.

    DOT National Transportation Integrated Search

    1975-01-01

    A program of construction and performance evaluation of seven Virginia flexible pavements containing at least some experimental features is reported. The objective of the program is to evaluate the performance of the pavements incorporating new or ti...

  8. MoDOT pavement preservation research program volume III, development of pavement family and treatment performance models.

    DOT National Transportation Integrated Search

    2015-10-01

    Pavement performance models describe the deterioration behavior of pavements. They are essential in a pavement management : system if the goal is to make more objective, reliable, and cost-effective decisions regarding the timing and nature of paveme...

  9. Analyses Relating to Pavement Material Characterizations and Their Effects......

    DOT National Transportation Integrated Search

    1998-01-01

    This report presents the analysis conducted on relating pavement performance or response measures and design considerations to specific pavement layers utilizing data contained in the Long Term Pavement Performance Program National Information Manage...

  10. Performance of rehabilitated asphalt concrete pavements in LTPP experiments (data collected through February 1997).

    DOT National Transportation Integrated Search

    2000-06-01

    Two experiments are included within the Long Term Pavement Performance (LTPP) program to provide data on the performance of : rehabilitated asphalt concrete (AC) pavements. These two experiments include Specific Pavement Studies No. 5 (SPS-5) and Gen...

  11. Long-Term Pavement Performance Program determination of in-place elastic layer modulus : backcalculation methodology and procedures.

    DOT National Transportation Integrated Search

    2015-12-01

    Deflection data have been measured at periodic intervals with a falling weight deflectometer on all rigid, flexible, semirigid, : and rehabilitated pavement test sections included in the Long-Term Pavement Performance (LTPP) program. A : common use o...

  12. Long-Term Monitoring of Pavement Maintenance Materials Test Sites

    DOT National Transportation Integrated Search

    1998-06-01

    The Strategic Highway Research Program's {SHRP) H-106 pothole repair experiment was part of the most extensive pavement maintenance experiment ever conducted. Started under SHRP and continued under the Long-Term Pavement Performance program's Long-Te...

  13. Evaluation of pavement surface friction treatments : [technical summary].

    DOT National Transportation Integrated Search

    2011-01-01

    The implementation of a pavement preservation program involves a learning curve with not only a determination to succeed, but also the courage to fail. Successful implementation of pavement preservation program requires knowledge of the performance o...

  14. Georgia Long-Term Pavement Performance (GALTPP) Program – Maintaining Georgia’s Calibration Sites and Identifying the Potential for Using MEPDG for Characterization of Non-Standard Materials and Methods (Phase 1)

    DOT National Transportation Integrated Search

    2016-10-01

    The Georgia Department of Transportation (GDOT) has initiated a Georgia Long-Term Pavement Performance (GALTPP) monitoring program 1) to provide data for calibrating the prediction models in the AASHTO Mechanistic-Empirical Pavement Design Guide (MEP...

  15. Long-Term Pavement Performance Automated Faulting Measurement

    DOT National Transportation Integrated Search

    2015-02-01

    This study focused on identifying transverse joint locations on jointed plain concrete pavements using an automated joint detection algorithm and computing faulting at these locations using Long-Term Pavement Performance (LTPP) Program profile data c...

  16. Characterization of unbound materials (soils/aggregates) for mechanistic-empirical pavement design guide.

    DOT National Transportation Integrated Search

    2009-02-01

    The resilient modulus (MR) input parameters in the Mechanistic-Empirical Pavement Design Guide (MEPDG) program have a significant effect on the projected pavement performance. The MEPDG program uses three different levels of inputs depending on the d...

  17. Distress identification manual for the long-term pavement performance program (Fifth revised edition)

    DOT National Transportation Integrated Search

    2014-05-01

    Accurate, consistent, and repeatable distress evaluation surveys can be performed by using the Distress Identification Manual for the Long-Term Pavement Performance Program. Color photographs and drawings illustrate the distresses found in three basi...

  18. ITS logical architecture : traceability matrix.

    DOT National Transportation Integrated Search

    2003-11-01

    This document provides information to aid in understanding and using the Long-Term Pavement Performance (LTPP) program pavement performance database. This document provides an introduction to the structure of the LTPP program, the relational structur...

  19. 2006 LTPP Product List

    DOT National Transportation Integrated Search

    2006-01-01

    The Federal Highway Administration's (FHWA) Long-Term Pavement Performance (LTPP) program is a 20-year study of inservice pavements designed to provide the data required to understand how and why pavements perform the way they do. The U.S. Congress m...

  20. Quantification of smoothness index differences related to long-term pavement performance equipment type

    DOT National Transportation Integrated Search

    2005-09-01

    The Long-Term Pavement Performance (LTPP) program was designed as a 20-year study of pavement performance. A major data collection effort at LTPP test sections is the collection of longitudinal profile data using inertial profilers. Three types of in...

  1. LTPP : 2002 year in review

    DOT National Transportation Integrated Search

    2003-04-01

    In 2002, as in previous years, the Long Term Pavement Performance (LTPP) program continued working to provide a better understanding of the "hows" and "whys" of pavement performance. This report outlines LTPP's 2002 program area accomplishments and p...

  2. The road to successful ITS software acquisition : executive summary

    DOT National Transportation Integrated Search

    1999-04-01

    The Long Term Pavement Performance (LTPP) program was established to support a broad range of pavement performance analyses leading to improved engineering tools to design, construct, and manage pavements. Since 1989, LTPP has collected data on the p...

  3. Accelerated testing for studying pavement design and performance (FY 2003) : research summary.

    DOT National Transportation Integrated Search

    2008-01-01

    The Midwest States Accelerated Pavement Testing Pooled Fund Program, financed by : the highway departments of Missouri, Iowa, Kansas and Nebraska, has supported an : accelerated pavement testing (APT) project to compare the performance of stabilized ...

  4. Analysis of Cracking in Jointed Plain Concrete Pavements

    DOT National Transportation Integrated Search

    2017-03-01

    This paper investigates the trends of longitudinal and transverse cracking in jointed concrete pavements based on Long-Term Pavement Performance (LTPP) Program Strategic Study of Structural Factors for Rigid Pavements (SPS-2) data. The impacts of sla...

  5. Long term pavement performance program protocol for calibrating traffic data collection equipment

    DOT National Transportation Integrated Search

    1998-05-10

    This document describes the procedures that the Long Term Pavement Performance (LTPP) program recommends for ensuring that traffic data collection equipment used for LTPP traffic monitoring efforts operates correctly and collects valid data.

  6. In-Vehicle Safety Advisory And Warning System (Ivsaws), Volume V: Appendices L Through V

    DOT National Transportation Integrated Search

    1999-09-01

    To better understand the environmental factors and their effects on pavement performance, the Long Term Pavement Performance (LTPP) Seasonal Monitoring Program (SMP) was initiated during 1992. Sixty-four LTPP pavement sections were identified to be i...

  7. Overview of the Arizona Quiet Pavement Program

    NASA Astrophysics Data System (ADS)

    Donavan, Paul; Scofield, Larry

    2005-09-01

    The Arizona Quiet Pavement Pilot Program (QP3) was initially implemented to reduce highway related traffic noise by overlaying most of the Phoenix metropolitan area Portland cement concrete pavement with a one inch thick asphalt rubber friction coarse. With FHWA support, this program represents the first time that pavement surface type has been allowed as a noise mitigation strategy on federally funded projects. As a condition of using pavement type as a noise mitigation strategy, ADOT developed a ten-year, $3.8 million research program to evaluate the noise reduction performance over time. Historically, pavement surface type was not considered a permanent solution. As a result, the research program was designed to specifically address this issue. Noise performance is being evaluated through three means: (1) conventional roadside testing within the roadway corridor (e.g., far field measurements within the right-of-way) (2) the use of near field measurements, both close proximity (CPX) and sound intensity (SI); and (3) far field measurements obtained beyond the noise barriers within the surrounding neighborhoods. This paper provides an overview of the program development, presents the research conducted to support the decision to overlay the urban freeway, and the status of current research.

  8. Accelerated testing for studying pavement design and performance (FY 2003) : evaluation of the chemical stabilized subgrade soil (CISL Experiment No. 12).

    DOT National Transportation Integrated Search

    2008-01-01

    The Midwest States Accelerated Pavement Testing Pooled Fund Program, financed by the highway departments : of Missouri, Iowa, Kansas and Nebraska, has supported an accelerated pavement testing (APT) project to compare : the performance of stabilized ...

  9. Performance evaluation of Arizona's LTPP SPS-5 project : strategic study of rehabilitation of asphalt concrete pavements.

    DOT National Transportation Integrated Search

    2015-06-01

    As part of the Long Term Pavement Performance (LTPP) Program, the Arizona Department of Transportation : (ADOT) constructed 11 Specific Pavement Study5 (SPS5) test sections on Interstate 8 near Casa Grande. The : SPS5 project studied a varie...

  10. Performance evaluation of Arizona's LTPP SPS-2 project : strategic study of structural factors for rigid pavements.

    DOT National Transportation Integrated Search

    2015-10-01

    As part of the Long Term Pavement Performance (LTPP) Program, Arizona Department of Transportation : (ADOT) constructed 21 Specific Pavement Studies 2 (SPS-2) test sections on Interstate 10 near Buckeye, : Arizona, to study a variety of structural se...

  11. The Long-Term Pavement Performance Program Roadmap: A Strategic Plan

    DOT National Transportation Integrated Search

    1995-09-01

    The goal of the ongoing, 20-year long-term pavement performance (LTPP) studies is to give State and Provincial transportation departments- the owners and customers of the LTPP program-the information and tools they need to build and maintain longer-l...

  12. Long-term pavement performance program manual for falling weight deflectometer measurements

    DOT National Transportation Integrated Search

    2006-12-01

    This manual is intended for use in collection of Falling Weight Deflectometer (FWD) data for the Long-Term Pavement Performance (LTPP) program. As such, it contains background information on FWD equipment and the general role of FWD testing within LT...

  13. Performance evaluation of Arizona's LTPP SPS-9 project : strategic study of flexible pavement binder factors.

    DOT National Transportation Integrated Search

    2015-06-01

    As part of the Long Term Pavement Performance (LTPP) Program, the Arizona Department of Transportation (ADOT) : constructed eight Specific Pavement Studies 9 (SPS9) test sections on Interstate 10 near Phoenix (04B900). SPS9A : 04B900 is an over...

  14. Performance evaluation of Arizona's LTPP SPS-9 Project : strategic study of flexible pavement mix design factors.

    DOT National Transportation Integrated Search

    2016-01-01

    As part of the Long Term Pavement Performance (LTPP) Program, the Arizona Department of Transportation (ADOT) constructed five Specific Pavement Studies 9 (SPS9) test sections on U.S. Route 93 near Kingman. This project, SPS9B, studied the effe...

  15. A Sensitivity Analysis of the Rigid Pavement Life-Cycle Cost Analysis Program

    DOT National Transportation Integrated Search

    2000-12-01

    Original Report Date: September 1999. This report describes the sensitivity analysis performed on the Rigid Pavement Life-Cycle Cost Analysis program, a computer program developed by the Center for Transportation Research for the Texas Department of ...

  16. Long-term Pavement Performance Program (LTPP) data analysis support : National Pooled Fund Study TPF-5(013). Effects of multiple freeze cycles and deep frost penetration on pavement performance and cost

    DOT National Transportation Integrated Search

    2006-11-01

    The objectives of this study are to: (1) quantify the effects of frost penetration on pavement performance in climates with deep sustained frost as compared to environments with multiple freeze-thaw cycles, (2) investigate the effect that local adapt...

  17. Piezo-electric automatic vehicle classification system : Oregon Department of Transportation with Castle Rock Consultants for a SHRP Long Term Pavement Performance Site : final report.

    DOT National Transportation Integrated Search

    1991-07-01

    Oregon has twelve pavement test sites that are part of the Strategic Highway Research Program (SHRP), Long Term Pavement Performance (LTPP) studies. Part of the data gathering on these sites involves vehicle weight and classification. This pilot proj...

  18. Reducing roughness in rehabilitated asphalt concrete (AC) pavements

    DOT National Transportation Integrated Search

    1998-12-01

    A recently completed study entitled, "The Investigation of Development of Pavement Roughness" (FHWA-RD-97-147), initiated by the Long Term Pavement Performance (LTPP) program, provides an answer to the question of how much different rehabilitation tr...

  19. Development of Pavement Performance Prediction Models for Preservation Treatments : Volume 2

    DOT National Transportation Integrated Search

    2018-04-01

    The implementation of a pavement preservation program was initiated in Fiscal Year (FY) 2005 at the Illinois Department of Transportation (IDOT) by appropriating funding for four specific pavement preservation treatments. The types of treatments incl...

  20. Improving the use of crack sealing to asphalt pavement in Louisiana : research project capsule : technology transfer program.

    DOT National Transportation Integrated Search

    2016-10-01

    Pavement performance : depends on the effectiveness : and timeliness of : maintenance efforts. : Deferred maintenance : increases the severity of : distresses and leads to a more : rapid decline of a pavements : condition. An effective : maintenan...

  1. Improving safety in pavement field testing [project summary].

    DOT National Transportation Integrated Search

    2017-09-01

    As part of its pavement evaluation program, the Florida Department of Transportation drives over 500,000 miles annually in its mission to collect pavement condition and performance data. Some of this work is conducted by vehicles that often travel at...

  2. Pavement warranty program in Wisconsin : 12-year evaluation, final report, June 2009.

    DOT National Transportation Integrated Search

    2009-06-01

    The Wisconsin Department of Transportation (WisDOT) first used pavement warranties in 1995. The intent of this study was to compare performance and cost data for WisDOT pavements constructed under warranty and standard contracts to determine the cost...

  3. Long-term pavement performance ancillary information management system (AIMS) reference guide.

    DOT National Transportation Integrated Search

    2012-11-01

    This document provides information on the Long-Term Pavement Performance (LTPP) program ancillary information. : Ancillary information includes data, images, reference materials, resource documents, and other information that : support and extend the...

  4. Structural factors of jointed plain concrete pavements : SPS-2--initial evaluation and analysis

    DOT National Transportation Integrated Search

    2005-04-01

    The SPS-2 experiment, "Strategic Study of Structural Factors for Jointed Plain Concrete Pavements (JPCP)," is one of the key components of the Long Term Pavement Performance (LTPP) program. The main objective of this experiment is to determine the re...

  5. LTPP InfoPave Q and A

    DOT National Transportation Integrated Search

    2015-12-29

    The Long-Term Pavement Performance (LTPP) program is the worlds largest pavement performance monitoring study, collecting data at 2,514 in-service highway test sections throughout the United States and Canada. The primary goal is to understand how...

  6. Long term pavement performance computed parameter : moisture content

    DOT National Transportation Integrated Search

    2008-01-01

    A study was conducted to compute in situ soil parameters based on time domain reflectometry (TDR) traces obtained from Long Term Pavement Performance (LTPP) test sections instrumented for the seasonal monitoring program (SMP). Ten TDR sensors were in...

  7. Guidelines for the collection of long-term pavement performance data

    DOT National Transportation Integrated Search

    2006-03-01

    A set of data collection guidelines has been provided for the collection of all data obtained for the Long-Term Pavement Performance (LTPP) program. These guidelines were provided to the Regional Support Contractors (RSC) to facilitate data collectio...

  8. Long-term pavement performance maintenance and rehabilitation data collection guide

    DOT National Transportation Integrated Search

    2006-03-01

    This document provides guidelines and forms for documenting maintenance and rehabilitation treatments on test sections in the Long-Term Pavement Performance (LTPP) program and is an update to chapters 6 and 7 of the 1993 version of the LTPP Data Coll...

  9. Performance evaluation of Arizona's LTPP SPS-6 project : strategic study of rehabilitation techniques.

    DOT National Transportation Integrated Search

    2013-10-01

    As part of the Long Term Pavement Performance (LTPP) Program, the Arizona Department of Transportation (ADOT) : constructed 19 Specific Pavement Studies 6 (SPS6) test sections on Interstate 40 near Flagstaff. The SPS6 project : studied the effe...

  10. Backcalculation of layer parameters for LTPP test sections, volume I : slab on elastic solid and slab on dense-liquid foundation analysis of rigid pavements.

    DOT National Transportation Integrated Search

    2001-01-01

    This report documents the results of backcalculation of layer material properties for rigid pavements included in the Long Term Pavement Performance (LTPP) program in the United States and Canada using deflection testing data. This study backcalculat...

  11. Backcalculation of layer parameters for LTPP test sections, volume I : slab on elastic solid and slab on dense-liquid foundation analysis of rigid pavements

    DOT National Transportation Integrated Search

    2001-01-01

    This report documents the results of backcalculation of layer material properties for rigid pavements included in the Long Term Pavement Performance (LTPP) program in the United States and Canada using deflection testing data. This study backcalculat...

  12. Development of field performance evaluation tools and program for pavement marking materials : technical report

    DOT National Transportation Integrated Search

    2011-03-01

    Historically the prequalification or selection of pavement marking materials (PMMs) is mainly based on : product specifications and lab testing, which do not correlate well with the field performance of the products. : On the other hand, there is no ...

  13. Truck characteristics analysis

    DOT National Transportation Integrated Search

    1998-01-01

    This report documents the early observations from the Long-Term Pavement Performance (LTPP) Specific Pavement Studies (SPS) conducted as part of the LTPP Program Data Insight conducted to identify initial findings from the test sections established f...

  14. Performance evaluation of Arizona's LTPP SPS-1 project : strategic study of flexible pavement structural factors.

    DOT National Transportation Integrated Search

    2012-01-01

    As part of the Long Term Pavement Performance (LTPP) Program, Arizona DOT constructed 16 SPS-1 test : sections on U.S. Route 93 near Kingman. The SPS-1 study was designed to study a variety of structural : sections in new asphalt concrete constructio...

  15. Contributions of the Long-Term Pavement Performance Program to Pavement Management System Improvements: Better Data and Performance Models

    DOT National Transportation Integrated Search

    2008-05-21

    The United States interstate highways and other components of the national highway system are approaching the end of their effective service lives. Many segments of this network have already surpassed their design lives and require frequent repair. S...

  16. Accelerated testing for studying pavement design and performance (FY 2002) : performance of foamed asphalt stabilized base in full depth reclaimed asphalt pavement.

    DOT National Transportation Integrated Search

    2004-08-01

    This report covers the Fiscal Year 2002 project conducted at the Accelerated Testing Laboratory at Kansas : State University. The project was selected and funded by the Midwest Accelerated Testing Pooled Fund Program , : which includes Iowa, Kansas, ...

  17. MoDOT pavement preservation research program.

    DOT National Transportation Integrated Search

    2014-08-01

    The following report documents a research project on pavement preservation performed by the Missouri University of Science and : Technology (Missouri S&T) and the University of Missouri-Columbia (UMC) on behalf of the Missouri Department of Transport...

  18. A brief history of long-life WSDOT concrete pavements.

    DOT National Transportation Integrated Search

    2010-02-01

    The concrete pavements that were originally constructed in Washington State as part of the interstate construction program have performed remarkably well considering the dramatic increase in the anticipated traffic loads. To date, the primary distres...

  19. Internally cured concrete for pavement and bridge deck applications.

    DOT National Transportation Integrated Search

    2015-07-01

    A laboratory and field testing program was conducted to evaluate the performance and usability of internally : cured concrete (ICC) using lightweight aggregates for bridge decks and concrete pavement slabs under Florida : conditions. The laboratory t...

  20. Highway concrete pavement technology development and testing : volume IV, field evaluation of Strategic Highway Research Program (SHRP) C-206 test sites (early opening of full-depth pavement repairs).

    DOT National Transportation Integrated Search

    2006-08-01

    The objective of this study was to monitor and evaluate the performance of experimental full-depth repairs made with high-early-strength (HES) materials placed under Strategic Highway Research Program (SHRP) project C-206, Optimization of Highway Con...

  1. Piezo-electric automatic vehicle classification system : Oregon Department of Transportation with Castle Rock Consultants for a SHRP Long Term Pavement Performance Site.

    DOT National Transportation Integrated Search

    1990-05-01

    Oregon has twelve sites that are part of the Strategic Highway Research Program (SHRP), Long Term Pavement Performance (LTPP) studies. Part of the data gathering on these sites involves vehicle weight and classification. This pilot project was to hel...

  2. Computer-based guidelines for concrete pavements : HIPERPAV III : user manual

    DOT National Transportation Integrated Search

    2009-10-01

    This user manual provides guidance on how to use the new High PERformance PAVing (HIPERPAV) III software program for the analysis of early-age Portland cement concrete pavement (PCCP) behavior. HIPERPAV III includes several improvements over prev...

  3. Evaluation of asphalt pavement interface conditions for enhanced bond performance : [summary].

    DOT National Transportation Integrated Search

    2017-05-01

    In this project, University of Florida researchers conducted a comprehensive program of modeling to understand interface debonding and near-surface longitudinal cracking in the wheel path of asphalt pavements. : To understand the interaction of debon...

  4. MoDOT pavement preservation research program volume I, summary report.

    DOT National Transportation Integrated Search

    2015-10-01

    The following report documents a research project on pavement preservation performed by the Missouri University of Science and : Technology (Missouri S&T) and the University of Missouri-Columbia (UMC) on behalf of the Missouri Department of : Transpo...

  5. LTPP: Year in Review 2000

    DOT National Transportation Integrated Search

    2000-01-01

    Whether it is for moving people or goods, or whether it is to support local activities or national trade and tourism, the quality of pavements is an integral part of the quality of life in America. The Long Term Pavement Performance (LTPP) program is...

  6. Equipment selection and site installation for LTPP SPS WIM sites

    DOT National Transportation Integrated Search

    2000-08-01

    The Long-Term Pavement Performance Program (LTPP) has intensified its efforts to obtain sufficient quantities of research quality loading data at a number of Specific Pavement Studies (SPS) sites. As one part of this effort, the Federal Highway Admin...

  7. Mechanistic-empirical design, implementation, and monitoring for flexible pavements : a project summary.

    DOT National Transportation Integrated Search

    2014-05-01

    This document is a summary of tasks performed for Project ICT-R27-060. : Mechanistic-empirical (M-E)based flexible pavement design concepts and procedures were : developed in previous Illinois Cooperative Highway Research Program projects (IHR-510...

  8. Mechanistic-Empirical (M-E) Design Implementation & Monitoring for Flexible Pavements : 2018 PROJECT SUMMARY

    DOT National Transportation Integrated Search

    2018-06-01

    This document is a summary of the tasks performed for Project ICT-R27-149-1. Mechanistic-empirical (M-E)based flexible pavement design concepts and procedures were previously developed in Illinois Cooperative Highway Research Program projects IHR-...

  9. Computed parameters : moisture content for unbound materials at seasonal monitoring program sites

    DOT National Transportation Integrated Search

    2000-01-01

    Moisture content plays a significant role in the performance of pavements. Variation in the amount of moisture in the subgrade can change the volume of swelling soil, which may result in detrimental deformation of the pavement structure. An increase ...

  10. Regional ITS architecture guidance : developing, using, and maintaining an ITS architecture for your region

    DOT National Transportation Integrated Search

    1998-08-01

    The purpose of this TechBrief is to discuss one of the Long Term Pavement Performance (LTPP) program's stringent data requirements - site-specific measurements for estimating pavement loadings - and to illustrate the effects of traffic loading data e...

  11. Effectiveness of Chip Sealing and Micro Surfacing on Pavement Serviceability and Life : Executive Summary Report

    DOT National Transportation Integrated Search

    2010-05-01

    Chip Seal and Micro Surfacing are important components of ODOTs pavement preventive maintenance program. Thorough understanding of how well these treatments are performing is critical to the nature and extent of their continued use in the future. ...

  12. Performance of Cracked and Seated Rigid Airport Pavements.

    DTIC Science & Technology

    1987-04-01

    situ properties of the cracked PCC material and of the uncracked PCC. Additionally, a visual condition survey of the pavements under investigation was...the overall pavement evaluation effort. Results of the NDT testing program were used to determine the in-situ properties of the cracked PCC material ...combined with the NDT deflection basin slopes, led to the conclusion that the cracked and seated PCC layer is behaving as a semi-rigid material . 45 OVERLAY

  13. Investigation of noise and durability performance trends for asphaltic pavement surface types : four-year results.

    DOT National Transportation Integrated Search

    2011-04-30

    "The work presented in this report is a summary of a series of research projects, whose central purpose is to support the Caltrans Quieter : Pavement Research Program, which has as its goals and objectives the identification of quieter, smoother, saf...

  14. Implementation and Validation of the Viscoelastic Continuum Damage Theory for Asphalt Mixture and Pavement Analysis in Brazil

    NASA Astrophysics Data System (ADS)

    Nascimento, Luis Alberto Herrmann do

    This dissertation presents the implementation and validation of the viscoelastic continuum damage (VECD) model for asphalt mixture and pavement analysis in Brazil. It proposes a simulated damage-to-fatigue cracked area transfer function for the layered viscoelastic continuum damage (LVECD) program framework and defines the model framework's fatigue cracking prediction error for asphalt pavement reliability-based design solutions in Brazil. The research is divided into three main steps: (i) implementation of the simplified viscoelastic continuum damage (S-VECD) model in Brazil (Petrobras) for asphalt mixture characterization, (ii) validation of the LVECD model approach for pavement analysis based on field performance observations, and defining a local simulated damage-to-cracked area transfer function for the Fundao Project's pavement test sections in Rio de Janeiro, RJ, and (iii) validation of the Fundao project local transfer function to be used throughout Brazil for asphalt pavement fatigue cracking predictions, based on field performance observations of the National MEPDG Project's pavement test sections, thereby validating the proposed framework's prediction capability. For the first step, the S-VECD test protocol, which uses controlled-on-specimen strain mode-of-loading, was successfully implemented at the Petrobras and used to characterize Brazilian asphalt mixtures that are composed of a wide range of asphalt binders. This research verified that the S-VECD model coupled with the GR failure criterion is accurate for fatigue life predictions of Brazilian asphalt mixtures, even when very different asphalt binders are used. Also, the applicability of the load amplitude sweep (LAS) test for the fatigue characterization of the asphalt binders was checked, and the effects of different asphalt binders on the fatigue damage properties of the asphalt mixtures was investigated. The LAS test results, modeled according to VECD theory, presented a strong correlation with the asphalt mixtures' fatigue performance. In the second step, the S-VECD test protocol was used to characterize the asphalt mixtures used in the 27 selected Fundao project test sections and subjected to real traffic loading. Thus, the asphalt mixture properties, pavement structure data, traffic loading, and climate were input into the LVECD program for pavement fatigue cracking performance simulations. The simulation results showed good agreement with the field-observed distresses. Then, a damage shift approach, based on the initial simulated damage growth rate, was introduced in order to obtain a unique relationship between the LVECD-simulated shifted damage and the pavement-observed fatigue cracked areas. This correlation was fitted to a power form function and defined as the averaged reduced damage-to-cracked area transfer function. The last step consisted of using the averaged reduced damage-to-cracked area transfer function that was developed in the Fundao project to predict pavement fatigue cracking in 17 National MEPDG project test sections. The procedures for the material characterization and pavement data gathering adopted in this step are similar to those used for the Fundao project simulations. This research verified that the transfer function defined for the Fundao project sections can be used for the fatigue performance predictions of a wide range of pavements all over Brazil, as the predicted and observed cracked areas for the National MEPDG pavements presented good agreement, following the same trends found for the Fundao project pavement sites. Based on the prediction errors determined for all 44 pavement test sections (Fundao and National MEPDG test sections), the proposed framework's prediction capability was determined so that reliability-based solutions can be applied for flexible pavement design. It was concluded that the proposed LVECD program framework has very good fatigue cracking prediction capability.

  15. Back-calculation of layer parameters for LTPP test sections, volume II : layered elastic analysis for flexible and rigid pavements.

    DOT National Transportation Integrated Search

    2000-09-01

    The Long Term Pavement Performance (LTPP) program has been collecting profile and : International Roughness Index (IRI) information from more than 2,062 test sections since 1989 : using K.J. Law 690DNC optical sensor Profilometers. Analysis of the IR...

  16. Develop guidelines for pavement preservation treatments and for building a pavement preservation program platform for Alaska.

    DOT National Transportation Integrated Search

    2012-11-01

    This reports summarizes the project findings including the following: : An evaluation of the current pavement preservation program used in Alaska and a roadmap to grow the program : A summary of the best practices in terms of pavement preserv...

  17. Assessment of the performance of rigid pavement back-calculation through finite element modeling

    NASA Astrophysics Data System (ADS)

    Shoukry, Samir N.; William, Gergis W.; Martinelli, David R.

    1999-02-01

    This study focuses on examining the behavior of rigid pavement layers during the Falling Weight Deflectometer (FWD) test. Factors affecting the design of a concrete slab, such as whether the joints are doweled or undoweled and the spacing between the transverse joints, were considered in this study. Explicit finite element analysis was employed to investigate pavement layers' responses to the action of the impulse of the FWD test. Models of various dimensions were developed to satisfy the factors under consideration. The accuracy of the finite element models developed in this investigation was verified by comparing the finite element- generated deflection basin with that experimentally measured during an actual test. The results showed that the measured deflection basin can be reproduced through finite element modeling of the pavement structure. The resulting deflection basins from the use FE modeling was processed in order to backcalculate pavement layer moduli. This approach provides a method for the evaluation of the performance of existing backcalculation programs which are based on static elastic layer analysis. Based upon the previous studies conducted for the selection of software, three different backcalculation programs were chosen for the evaluation: MODULUS5.0, EVERCALC4.0, and MODCOMP3. The results indicate that ignoring the dynamic nature of the load may lead to crude results, especially during backcalculation procedures.

  18. Re-Evaluation of the AASHTO-Flexible Pavement Design Equation with Neural Network Modeling

    PubMed Central

    Tiğdemir, Mesut

    2014-01-01

    Here we establish that equivalent single-axle loads values can be estimated using artificial neural networks without the complex design equality of American Association of State Highway and Transportation Officials (AASHTO). More importantly, we find that the neural network model gives the coefficients to be able to obtain the actual load values using the AASHTO design values. Thus, those design traffic values that might result in deterioration can be better calculated using the neural networks model than with the AASHTO design equation. The artificial neural network method is used for this purpose. The existing AASHTO flexible pavement design equation does not currently predict the pavement performance of the strategic highway research program (Long Term Pavement Performance studies) test sections very accurately, and typically over-estimates the number of equivalent single axle loads needed to cause a measured loss of the present serviceability index. Here we aimed to demonstrate that the proposed neural network model can more accurately represent the loads values data, compared against the performance of the AASHTO formula. It is concluded that the neural network may be an appropriate tool for the development of databased-nonparametric models of pavement performance. PMID:25397962

  19. Re-evaluation of the AASHTO-flexible pavement design equation with neural network modeling.

    PubMed

    Tiğdemir, Mesut

    2014-01-01

    Here we establish that equivalent single-axle loads values can be estimated using artificial neural networks without the complex design equality of American Association of State Highway and Transportation Officials (AASHTO). More importantly, we find that the neural network model gives the coefficients to be able to obtain the actual load values using the AASHTO design values. Thus, those design traffic values that might result in deterioration can be better calculated using the neural networks model than with the AASHTO design equation. The artificial neural network method is used for this purpose. The existing AASHTO flexible pavement design equation does not currently predict the pavement performance of the strategic highway research program (Long Term Pavement Performance studies) test sections very accurately, and typically over-estimates the number of equivalent single axle loads needed to cause a measured loss of the present serviceability index. Here we aimed to demonstrate that the proposed neural network model can more accurately represent the loads values data, compared against the performance of the AASHTO formula. It is concluded that the neural network may be an appropriate tool for the development of databased-nonparametric models of pavement performance.

  20. Material Handling Equipment Evaluation for Crater Repair

    DTIC Science & Technology

    2016-11-01

    Department of the Army position unless so designated by other authorized documents. DESTROY THIS REPORT WHEN NO LONGER NEEDED. DO NOT RETURN IT TO THE...project. Jeb. S. Tingle was the ERDC Airfield Damage Repair program manager. The work was performed by the Airfields and Pavement Branch (GMA) of the...USAF’s) ability to perform airfield pavement repair tasks to support the operation of modern aircraft for a variety of mission scenarios. The ADR

  1. MoDOT pavement preservation research program volume IV, pavement evaluation tools-data collection methods.

    DOT National Transportation Integrated Search

    2015-10-01

    The overarching goal of the MoDOT Pavement Preservation Research Program, Task 3: Pavement Evaluation Tools Data : Collection Methods was to identify and evaluate methods to rapidly obtain network-level and project-level information relevant to :...

  2. A pavement management research program for Oregon highways : final report.

    DOT National Transportation Integrated Search

    1989-12-01

    An extensive program was developed to measure pavement deflection skid resistance, and rideability throughout Oregon. The data from those "objective" measures were then evaluated for correlations with observed pavement distress and traffic factors. :...

  3. Evaluation of pavement surface friction treatments.

    DOT National Transportation Integrated Search

    2011-12-01

    The implementation of a pavement preservation program involves a learning curve with not only a determination to succeed, but : also the courage to fail. Also, successful implementation of pavement preservation program requires knowledge of the perfo...

  4. Comparative Study of Nondestructive Pavement Testing, MacDill Air Force Base, Florida

    DTIC Science & Technology

    1987-07-01

    a deflection-basin fitting program that prodicts moduli of the pavement layers and subgrade. A layered-elastic program AIRPOD is used in a fatigue...Layered-elastic Limiting stress in PCC; of pavement layers ( AIRPOD ) limiting strain in AC from deflection basin (ELSYM-5) (BASFIT) AFESC Elastic moduli of...need not be made. 121. Pavement evaluation computations were next accomplished using a series of computer programs referred to as ELSYM-5 and AIRPOD

  5. A probabilistic and adaptive approach to modeling performance of pavement infrastructure

    DOT National Transportation Integrated Search

    2007-08-01

    Accurate prediction of pavement performance is critical to pavement management agencies. Reliable and accurate predictions of pavement infrastructure performance can save significant amounts of money for pavement infrastructure management agencies th...

  6. Guidelines for PCC inputs to AASHTOWare Pavement ME.

    DOT National Transportation Integrated Search

    2014-12-01

    The objective of this research study was to develop guidelines for portland cement concrete (PCC) material inputs to the : AASHTOWare Pavement ME Design program. The AASHTOWare Pavement ME Design is the software program used by the : Mississippi Depa...

  7. Summary for 1996 LTPP traffic data collection : annual summary.

    DOT National Transportation Integrated Search

    1997-06-01

    In 1996 the Research Unit continued to collect traffic data for the Long Term Pavement Performance Program, hereinafter referred to as the LTPP program. The LTPP program is essentially comprised of on-site computers that apply collected data to an al...

  8. Engineering properties of resin modified pavement (RMP) for mechanistic design

    NASA Astrophysics Data System (ADS)

    Anderton, Gary Lee

    1997-11-01

    The research study described in this report focuses on determining the engineering properties of the resin modified pavement (RMP) material relating to pavement performance, and then developing a rational mechanistic design procedure to replace the current empirical design procedure. A detailed description of RMP is provided, including a review of the available literature on this relatively new pavement technology. Field evaluations of four existing and two new RMP project sites were made to assess critical failure modes and to obtain pavement samples for subsequent laboratory testing. Various engineering properties of laboratory-produced and field-recovered samples of RMP were measured and analyzed. The engineering properties evaluated included those relating to the material's stiffness, strength, thermal properties, and traffic-related properties. Comparisons of these data to typical values for asphalt concrete and portland cement concrete were made to relate the physical nature of RMP to more common pavement surfacing materials. A mechanistic design procedure was developed to determine appropriate thickness profiles of RMP, using stiffness and fatigue properties determined by this study. The design procedure is based on the U.S. Army Corps of Engineers layered elastic method for airfield flexible pavements. The WESPAVE computer program was used to demonstrate the new design procedure for a hypothetical airfield apron design. The results of the study indicated that RMP is a relatively stiff, viscoelastic pavement surfacing material with many of its strength and stiffness properties falling between those of typical asphalt concrete and portland cement concrete. The RMP's thermal and traffic-related properties indicated favorable field performance. The layered elastic design approach appeared to be a reasonable and practical method for RMP mechanistic pavement design, and this design procedure was recommended for future use and development.

  9. Long-Term Pavement Performance Program

    DOT National Transportation Integrated Search

    2015-12-01

    The LTPP program will yield additional benefits as data are added to the database and as data analysis effortssome currently planned and some yet to be identifiedare completed. Continued monitoring of the test sections that remain in service is...

  10. An overview of PM-10 base year emissions inventories

    DOT National Transportation Integrated Search

    1999-01-01

    This report provides an overview of the Long Term Pavement Performance (LTPP) program's analysis program. Specifically, it outlines the analysis projects that will be undertaken by the Federal Highway Administration in fiscal years 1999 and 2000 and ...

  11. MoDOT pavement preservation research program volume II, data collection for pavement management : historical data mining and production of data.

    DOT National Transportation Integrated Search

    2015-10-01

    The objective of Task 1 was to develop data for use in MoDOTs pavement preservation program based primarily on historical : information available throughout MoDOT as well as climate data from the National Oceanic and Atmospheric Administration : (...

  12. Preparation for implementation of the mechanistic-empirical pavement design guide in Michigan, part 3 : local calibration and validation of the pavement-ME performance models.

    DOT National Transportation Integrated Search

    2014-11-01

    The main objective of Part 3 was to locally calibrate and validate the mechanistic-empirical pavement : design guide (Pavement-ME) performance models to Michigan conditions. The local calibration of the : performance models in the Pavement-ME is a ch...

  13. 23 CFR 500.106 - PMS.

    Code of Federal Regulations, 2010 CFR

    2010-04-01

    ... process that provides information for use in implementing cost-effective pavement reconstruction, rehabilitation, and preventative maintenance programs and that results in pavements designed to accommodate... the “AASHTO Guidelines for Pavement Management Systems.” 1 1 AASHTO Guidelines for Pavement Management...

  14. 23 CFR 500.106 - PMS.

    Code of Federal Regulations, 2012 CFR

    2012-04-01

    ... process that provides information for use in implementing cost-effective pavement reconstruction, rehabilitation, and preventative maintenance programs and that results in pavements designed to accommodate... the “AASHTO Guidelines for Pavement Management Systems.” 1 1 AASHTO Guidelines for Pavement Management...

  15. 23 CFR 500.106 - PMS.

    Code of Federal Regulations, 2014 CFR

    2014-04-01

    ... process that provides information for use in implementing cost-effective pavement reconstruction, rehabilitation, and preventative maintenance programs and that results in pavements designed to accommodate... the “AASHTO Guidelines for Pavement Management Systems.” 1 1 AASHTO Guidelines for Pavement Management...

  16. 23 CFR 500.106 - PMS.

    Code of Federal Regulations, 2011 CFR

    2011-04-01

    ... process that provides information for use in implementing cost-effective pavement reconstruction, rehabilitation, and preventative maintenance programs and that results in pavements designed to accommodate... the “AASHTO Guidelines for Pavement Management Systems.” 1 1 AASHTO Guidelines for Pavement Management...

  17. 23 CFR 500.106 - PMS.

    Code of Federal Regulations, 2013 CFR

    2013-04-01

    ... process that provides information for use in implementing cost-effective pavement reconstruction, rehabilitation, and preventative maintenance programs and that results in pavements designed to accommodate... the “AASHTO Guidelines for Pavement Management Systems.” 1 1 AASHTO Guidelines for Pavement Management...

  18. The effects of varying the tire cap ply, sidewall filler height and pavement surface texture on tire/pavement noise generation

    DOT National Transportation Integrated Search

    2003-02-01

    In order to better understand the effect of tire carcass construction and pavement texture on tire/pavement noise generation, a measurement program was conducted on a group of four automobile tires on three pavement textures. The tires included all c...

  19. 23 CFR 973.208 - Indian lands pavement management system (PMS).

    Code of Federal Regulations, 2013 CFR

    2013-04-01

    ... 23 Highways 1 2013-04-01 2013-04-01 false Indian lands pavement management system (PMS). 973.208... PROGRAM Bureau of Indian Affairs Management Systems § 973.208 Indian lands pavement management system (PMS... concepts described in the AASHTO's “Pavement Management Guide.” 1 1 “Pavement Management Guide,” AASHTO...

  20. 23 CFR 973.208 - Indian lands pavement management system (PMS).

    Code of Federal Regulations, 2010 CFR

    2010-04-01

    ... 23 Highways 1 2010-04-01 2010-04-01 false Indian lands pavement management system (PMS). 973.208... PROGRAM Bureau of Indian Affairs Management Systems § 973.208 Indian lands pavement management system (PMS... concepts described in the AASHTO's “Pavement Management Guide.” 1 1 “Pavement Management Guide,” AASHTO...

  1. 23 CFR 973.208 - Indian lands pavement management system (PMS).

    Code of Federal Regulations, 2012 CFR

    2012-04-01

    ... 23 Highways 1 2012-04-01 2012-04-01 false Indian lands pavement management system (PMS). 973.208... PROGRAM Bureau of Indian Affairs Management Systems § 973.208 Indian lands pavement management system (PMS... concepts described in the AASHTO's “Pavement Management Guide.” 1 1 “Pavement Management Guide,” AASHTO...

  2. 23 CFR 973.208 - Indian lands pavement management system (PMS).

    Code of Federal Regulations, 2014 CFR

    2014-04-01

    ... 23 Highways 1 2014-04-01 2014-04-01 false Indian lands pavement management system (PMS). 973.208... PROGRAM Bureau of Indian Affairs Management Systems § 973.208 Indian lands pavement management system (PMS... concepts described in the AASHTO's “Pavement Management Guide.” 1 1 “Pavement Management Guide,” AASHTO...

  3. 23 CFR 973.208 - Indian lands pavement management system (PMS).

    Code of Federal Regulations, 2011 CFR

    2011-04-01

    ... 23 Highways 1 2011-04-01 2011-04-01 false Indian lands pavement management system (PMS). 973.208... PROGRAM Bureau of Indian Affairs Management Systems § 973.208 Indian lands pavement management system (PMS... concepts described in the AASHTO's “Pavement Management Guide.” 1 1 “Pavement Management Guide,” AASHTO...

  4. Verification of mechanistic-empirical design models for flexible pavements through accelerated pavement testing : technical summary.

    DOT National Transportation Integrated Search

    2014-08-01

    Midwest States Accelerated Pavement Testing Pooled-Fund Program, financed by the : highway departments of Kansas, Iowa, and Missouri, has supported an accelerated : pavement testing (APT) project to validate several models incorporated in the NCHRP :...

  5. Verification of mechanistic-empirical design models for flexible pavements through accelerated pavement testing.

    DOT National Transportation Integrated Search

    2014-08-01

    The Midwest States Accelerated Pavement Testing Pooled Fund Program, financed by the highway : departments of Kansas, Iowa, and Missouri, has supported an accelerated pavement testing (APT) project to : validate several models incorporated in the NCH...

  6. An investment benefiting America's highways : the long term pavement performance program

    DOT National Transportation Integrated Search

    2000-01-01

    The Federal Highway Administration (FHWA) and the States, beginning in 1978, jointly developed and implemented a continuous data collection system called the Highway Performance Monitoring System (HPMS). Currently, the HPMS contains over 110,000 high...

  7. Cost effectiveness of the MDOT preventive maintenance program.

    DOT National Transportation Integrated Search

    2013-04-01

    The Michigan Department of Transportations (MDOT) pavement preservation program dates back to 1992. MDOTs pavement preservation strategy is primarily implemented through its capital preventive maintenance (CPM) program, in which preventive main...

  8. Preliminary In-Situ Evaluation of an Innovative, Semi-Flexible Pavement Wearing Course Mixture Using Fast Falling Weight Deflectometer

    PubMed Central

    Pratelli, Chiara; Betti, Giacomo; Marradi, Alessandro

    2018-01-01

    In the last forty, years semi-flexible pavements have been successfully employed, especially in those areas subjected to heavy and slow-moving loads. They usually comprise a wearing course of Grouted Macadam, a composite pavement material that provides significant advantages in comparison to both concrete and asphalt pavements. On the other hand, the laying process of this material is a two-stage operation, and the realization complexity leads to long realization times and high initial costs. Therefore, the use of semi-flexible pavements has been limited to some fields of application and areas. Recently, an innovative material has been developed to be used as an alternative to Grouted Macadam for semi-flexible pavement wearing course realization. This material should provide similar or even superior characteristics compared to traditional Grouted Macadam. This will reduce semi-flexible pavement construction time and avoid the need for dividing the laying process. This paper presents an experimental program involving the use of FastFWD, as an APT device, to evaluate in-situ properties and performance of this material. The achieved results regarding the validation of this new material by means of FastFWD appear promising both in terms of the material’s properties and resistance to dynamic load repetitions. PMID:29659543

  9. Preliminary In-Situ Evaluation of an Innovative, Semi-Flexible Pavement Wearing Course Mixture Using Fast Falling Weight Deflectometer.

    PubMed

    Pratelli, Chiara; Betti, Giacomo; Giuffrè, Tullio; Marradi, Alessandro

    2018-04-16

    In the last forty, years semi-flexible pavements have been successfully employed, especially in those areas subjected to heavy and slow-moving loads. They usually comprise a wearing course of Grouted Macadam, a composite pavement material that provides significant advantages in comparison to both concrete and asphalt pavements. On the other hand, the laying process of this material is a two-stage operation, and the realization complexity leads to long realization times and high initial costs. Therefore, the use of semi-flexible pavements has been limited to some fields of application and areas. Recently, an innovative material has been developed to be used as an alternative to Grouted Macadam for semi-flexible pavement wearing course realization. This material should provide similar or even superior characteristics compared to traditional Grouted Macadam. This will reduce semi-flexible pavement construction time and avoid the need for dividing the laying process. This paper presents an experimental program involving the use of FastFWD, as an APT device, to evaluate in-situ properties and performance of this material. The achieved results regarding the validation of this new material by means of FastFWD appear promising both in terms of the material's properties and resistance to dynamic load repetitions.

  10. Application of high performance concrete in the pavement system : structural response of high performance concrete pavements.

    DOT National Transportation Integrated Search

    2002-03-01

    Rigid pavements make up a significant percentage of highway systems in the United States and abroad. Concrete pavements provide an economical and durable solution for highway systems, because the pavements last longer and require less maintenance. Re...

  11. Application of high performance concrete in the pavement system : structural response of high performance concrete pavement : executive summary.

    DOT National Transportation Integrated Search

    2002-01-01

    Rigid pavements make up a significant percentage of highway systems in the United States and abroad. Concrete pavements provide an economical and durable solution for highway systems, because the pavements last longer and require less maintenance. Re...

  12. Long-term & short-term measures of roadway snow and ice control performance : final report.

    DOT National Transportation Integrated Search

    2016-07-08

    The primary performance measures for RSIC programs by state DOTs are 1) operating speed recovery time and 2) time to achieve bare pavement. There is a continued need for objective, outcome-based performance metrics for RSIC operations. The overall go...

  13. Evaluation of current Louisiana flexible pavement structures using PMS data and new mechanistic-empirical pavement design guide.

    DOT National Transportation Integrated Search

    2012-04-01

    The new Mechanistic-Empirical Pavement Design Guide (MEPDG) developed under the National Cooperative Highway Research Program (NCHRP) Project 1-37A represents a major change as compared to the 1993 AASHTO Pavement Design Guide. The MEPDG provides a r...

  14. Evaluation of current Louisiana flexible pavement structures using PMS data and new mechanistic-empirical pavement design guide : tech summary.

    DOT National Transportation Integrated Search

    2012-04-01

    The new Mechanistic-Empirical Pavement Design Guide (MEPDG) developed under the National Cooperative Highway : Research Program (NCHRP) Project 1-37A represents a major change as compared to the 1993 AASHTO Pavement : Design Guide. MEPDG provides a r...

  15. Long term pavement performance directive : annual profiler-dipstick comparisons

    DOT National Transportation Integrated Search

    1996-11-25

    The objective of this directive is to initiate a formal program for Profiler - Dipstick comparisons. These comparison tests should be performed as a minimum, on an annual basis, or within 90 days after major repairs to any of the LTPP profile measure...

  16. Year in review 2006

    DOT National Transportation Integrated Search

    2007-01-01

    Improving the productivity and mobility of the national highway transportation system are key goals of the Federal Highway Administration (FHWA). During 2006, FHWA's Long-Term Pavement Performance (LTPP) program worked toward these goals through its ...

  17. Year in review : 2005.

    DOT National Transportation Integrated Search

    2006-01-01

    Improving the productivity and mobility of the national highway transportation system are : key goals of the Federal Highway Administration (FHWA). During 2005, FHWAs : Long-Term Pavement Performance (LTPP) program continued to work toward these g...

  18. Mechanistic flexible pavement overlay design program : tech summary.

    DOT National Transportation Integrated Search

    2009-07-01

    The Louisiana Department of Transportation and Development (LADOTD) currently follows the 1993 : AASHTO pavement design guides component analysis method in its fl exible pavement overlay thickness : design. Such an overlay design method, how...

  19. Pavement testing facility : effects of tire pressure on flexible pavement response performance

    DOT National Transportation Integrated Search

    1989-08-01

    The effects of tire pressure on flexible pavement response and performance were evaluated using data from the first phase of research at the Federal Highway Administration's Pavement Testing Facility. The Accelerated Loading Facility testing machine ...

  20. Evaluation of full depth asphaltic concrete pavements : final report.

    DOT National Transportation Integrated Search

    1982-10-01

    the aim of this study was to evaluate the full depth asphaltic concrete pavement design concept by observing the performance characteristics of two 13-inch pavements constructed in 1970. Pavement performance measurements, over an 11-year period, incl...

  1. 77 FR 22058 - Agency Information Collection Activities: Request for Comments for a New Information Collection

    Federal Register 2010, 2011, 2012, 2013, 2014

    2012-04-12

    ... Pavement Types in the FHWA Traffic Noise Model: Regulatory and Procedural Changes. Background: The Federal... to as ``quieter pavements.'' In 2003, the FHWA entered into the Quiet Pavement Pilot Program with the Arizona Department of Transportation, co-sponsored the 2004 International Scan on ``Quieter Pavement...

  2. Year in review 2007

    DOT National Transportation Integrated Search

    2008-01-01

    Improving mobility on our Nations highways is the mission of the Federal Highway Administration (FHWA). During 2007, FHWAs Long Term Pavement Performance (LTPP) program worked toward this mission through its efforts to provide answers to how...

  3. Southeastern superpave center pooled-fund activities.

    DOT National Transportation Integrated Search

    2010-02-01

    Much has been learned about materials characteristics, testing procedures, new equipment, mix design, and pavement performance through the many studies conducted as a part of the Southeastern Superpave Center (SSC) pooled-fund program. Lessons learne...

  4. Performance determination of precast concrete slabs used for the repair of rigid pavements.

    DOT National Transportation Integrated Search

    2014-10-01

    The safety of civilians is of paramount importance during the construction and repair of concrete pavements. : A complete understanding of the pavement distresses that compromise the structural stability and performance : of rigid pavements are requi...

  5. Implementation of a pavement management system in Virginia.

    DOT National Transportation Integrated Search

    1987-01-01

    The report summarizes the developments in pavement management in the Virginia Department of Transportation through late 1986. Included are discussions of the pavement management process with examples of priority programming, long-range projection of ...

  6. Long-Term Pavement Performance Materials Characterization Program: Verification of Dynamic Test Systems with an Emphasis on Resilient Modulus

    DOT National Transportation Integrated Search

    2005-09-01

    This document describes a procedure for verifying a dynamic testing system (closed-loop servohydraulic). The procedure is divided into three general phases: (1) electronic system performance verification, (2) calibration check and overall system perf...

  7. Improving Rutting Resistance of Pavement Structures Using Geosynthetics: An Overview

    PubMed Central

    Karim, Mohamed Rehan; Khodaii, Ali; Almasi, Mohammad Hadi

    2014-01-01

    A pavement structure consists of several layers for the primary purpose of transmitting and distributing traffic loads to the subgrade. Rutting is one form of pavement distresses that may influence the performance of road pavements. Geosynthetics is one type of synthetic materials utilized for improving the performance of pavements against rutting. Various studies have been conducted on using different geosynthetic materials in pavement structures by different researchers. One of the practices is a reinforcing material in asphalt pavements. This paper intends to present and discuss the discoveries from some of the studies on utilizing geosynthetics in flexible pavements as reinforcement against permanent deformation (rutting). PMID:24526919

  8. Improving rutting resistance of pavement structures using geosynthetics: an overview.

    PubMed

    Mirzapour Mounes, Sina; Karim, Mohamed Rehan; Khodaii, Ali; Almasi, Mohammad Hadi

    2014-01-01

    A pavement structure consists of several layers for the primary purpose of transmitting and distributing traffic loads to the subgrade. Rutting is one form of pavement distresses that may influence the performance of road pavements. Geosynthetics is one type of synthetic materials utilized for improving the performance of pavements against rutting. Various studies have been conducted on using different geosynthetic materials in pavement structures by different researchers. One of the practices is a reinforcing material in asphalt pavements. This paper intends to present and discuss the discoveries from some of the studies on utilizing geosynthetics in flexible pavements as reinforcement against permanent deformation (rutting).

  9. Skid correction program : user's manual.

    DOT National Transportation Integrated Search

    2012-06-01

    This document outlines methods for use by UDOT personnel to address pavements with unacceptable skid numbers. The program involves coordination between Safety, Pavement Management, Region, and Maintenance managers. A process has been recommended usin...

  10. Colorado Department of Transportation hot-mix asphalt crack sealing and filling best practices guidelines.

    DOT National Transportation Integrated Search

    2014-10-01

    Crack sealing and filling on hot mix asphalt (HMA) pavements are cost-effective pavement preservation techniques that improve pavement performance and : extend the life of existing pavements. If performed in a timely and effective manner, crack seali...

  11. Effect of environmental factors on pavement deterioration : Final report, Volume II of II

    DOT National Transportation Integrated Search

    1988-11-01

    A computerized model for the determination of pavement deterioration responsibilities due to load and non-load related factors was developed. The model is based on predicted pavement performance and the relationship of pavement performance to a quant...

  12. Effect of environmental factors on pavement deterioration : Final report, Volume I of II.

    DOT National Transportation Integrated Search

    1988-11-01

    A computerized model for the determination of pavement deterioration responsibilities due to load and non-load related factors was developed. The model is based on predicted pavement performance and the relationship of pavement performance to a quant...

  13. Performance of pavements designed with low-cost materials

    NASA Astrophysics Data System (ADS)

    Grau, R. W.; Yrjanson, W. A.; Packard, R. G.; Barksdale, R. D.; Potts, C. F.; Ruth, B. E.; Smith, L. L.; Huddleston, I. J.; Vinson, T. S.; Hicks, R. G.

    1980-04-01

    The following areas are discussed. Utilization of marginal aggregate materials for secondary road surface layers; econocrete pavements; current practices; construction and performance of sand-asphalt bases and performance of sand-asphalt and limerock pavements in Florida. Cement stabilization of degrading aggregates use of crushed stone screenings in highway construction (abridgement); and sulfur-asphalt pavement technology are also reviewed.

  14. Calibration of PMIS pavement performance prediction models.

    DOT National Transportation Integrated Search

    2012-02-01

    Improve the accuracy of TxDOTs existing pavement performance prediction models through calibrating these models using actual field data obtained from the Pavement Management Information System (PMIS). : Ensure logical performance superiority patte...

  15. LTPP distress identification manual sets a standard for states

    DOT National Transportation Integrated Search

    2002-01-01

    A brief note about the usefulness of the LTPP program's Distress Identification Manual in helping States with their pavement management and maintenance activities. Accurate reports of pavement conditions are crucial to pavement management and mainten...

  16. Wet weather exposure measures

    DOT National Transportation Integrated Search

    1988-02-01

    Accident surveillance programs require a measure of wet-pavement exposure to determine whether the wet-pavement accident rates of particular highway sections are higher or lower than expected. This research program used the results of laboratory and ...

  17. Improving Distribution of Military Programs’ Technical Criteria

    DTIC Science & Technology

    1993-08-01

    Vacuum System ETL 1110-3-380 01/29/88 Std Distribution of Military Arfid Pavement Dsg ETL 1110-3-381 01/29/88 Airfield Pavement Design ETL 1110-3...Army Arfid O&M Facilities TM 5-825-2 08/01/78 Flexible Pavement Design for Airfields TM 5-825-2-1 11/01/89 Army Airfields Pavements, Flex (Appendix

  18. A mechanistic-empirical approach for evaluating the effect of diamond grinding and thin overlay on predicted pavement performance.

    DOT National Transportation Integrated Search

    2016-04-01

    Advancements in pavement management practice require evaluating the performance of pavement preservation treatments using performance-related characteristics. However, state highway agencies face the challenge of developing performance-based relation...

  19. Performance of warranted asphalt pavements : smoothness and performance of Indiana warranted asphalt pavements.

    DOT National Transportation Integrated Search

    2016-06-01

    In the early 1990s the Indiana Department of Transportation (INDOT) developed a five-year warranty specification for asphalt pavements : with the first project being built in 1996. In 2004, results indicated that the asphalt pavements built with the ...

  20. LTTP: 1999 Year in Review

    DOT National Transportation Integrated Search

    2002-12-13

    Improving the productivity and mobility of the national highway transportation system is a key goal of the Federal Highway Administration (FHWA). During 1999, FHWA's Long Term Pavement Performance (LTPP) program continued to work toward these goals t...

  1. LTPP Computed Parameter: Moisture Content

    DOT National Transportation Integrated Search

    2008-01-01

    A study was conducted to compute in situ soil parameters based on time domain reflectometry (TDR) traces obtained from Long Term Pavement Performance (LTPP) test sections instrumented for the seasonal monitoring program (SMP). Ten TDR sensors were in...

  2. Understanding traffic variations by vehicle classifications

    DOT National Transportation Integrated Search

    1998-08-01

    To provide a better understanding of how short-duration truck volume counts can be used to accurately estimate the key variables needed for design, planning, and operational analyses, the Long-Term Pavement Performance (LTPP) program recently complet...

  3. LTTP profile variability.

    DOT National Transportation Integrated Search

    2001-09-01

    The Long Term Pavement Performance (LTPP) program has been collecting profile and : International Roughness Index (IRI) information from more than 2,062 test sections since 1989 : using K.J. Law 690DNC optical sensor Profilometers. Analysis of the IR...

  4. Travtek Global Evaluation And Executive Summary

    DOT National Transportation Integrated Search

    2000-09-01

    Several measures have been carried out in the Long Term Pavement Performance (LTPP) Program to ensure uniform distress data collection and interpretation. However, no systematic evaluation has been done to quantify the variability (bias and precision...

  5. Long-term Performance of Granular Bases Including the Effect of Wet-Dry Cycles on Inverted Base Pavement Performance

    DOT National Transportation Integrated Search

    2017-06-01

    The main objective of this study was to advance the understanding of alternative pavement designs. In particular, potential techniques such as inverted base pavements (IBP) have increased the importance of granular aggregate bases (GAB) in pavement s...

  6. Mechanical performance of porous concrete pavement containing nano black rice husk ash

    NASA Astrophysics Data System (ADS)

    Ibrahim, M. Y. Mohd; Ramadhansyah, P. J.; Rosli, H. Mohd; Ibrahim, M. H. Wan

    2018-01-01

    This paper presents an experimental research on the performance of nano black rice husk ash on the porous concrete pavement properties. The performance of the porous concrete pavement mixtures was investigated based on their compressive strength, flexural strength, and splitting tensile strength. The results indicated that using nano material from black rice husk ash improved the mechanical properties of porous concrete pavement. In addition, the result of compressive, flexural, and splitting tensile strength was increased with increasing in curing age. Finally, porous concrete pavement with 10% replacement levels exhibited an excellent performance with good strength compared to others.

  7. Accelerated pavement testing of low-volume paved roads with geocell reinforcement.

    DOT National Transportation Integrated Search

    2015-03-01

    The Midwest States Accelerated Pavement Testing Pooled-Fund Program, financed by the highway : departments of Kansas, Iowa, Missouri, and New York, has supported an accelerated pavement testing (APT) project : to study the rehabilitation of low-volum...

  8. A pavement management research program for Oregon highways : interim report.

    DOT National Transportation Integrated Search

    1985-03-01

    This is the first in a series of reports documenting progress on a statewide pavement management research project. The overall project is conducting research into pavement life cycles of different rehabilitation treatment; the cost-effectiveness of e...

  9. 23 CFR 973.104 - Definitions.

    Code of Federal Regulations, 2012 CFR

    2012-04-01

    ... cost-effective pavement reconstruction, rehabilitation, and preventive maintenance programs and policies, and that results in pavement designed to accommodate current and forecasted traffic in a safe... goods to levels that meet Federal, State and local needs. Indian lands pavement management system (PMS...

  10. 23 CFR 973.104 - Definitions.

    Code of Federal Regulations, 2013 CFR

    2013-04-01

    ... cost-effective pavement reconstruction, rehabilitation, and preventive maintenance programs and policies, and that results in pavement designed to accommodate current and forecasted traffic in a safe... goods to levels that meet Federal, State and local needs. Indian lands pavement management system (PMS...

  11. 23 CFR 971.104 - Definitions.

    Code of Federal Regulations, 2011 CFR

    2011-04-01

    .... Federal lands pavement management system (PMS) means a systematic process used by the FS, FWS, and NPS that provides information for use in implementing cost-effective pavement reconstruction, rehabilitation, and preventive maintenance programs and policies, and that results in pavement designed to...

  12. 23 CFR 970.104 - Definitions.

    Code of Federal Regulations, 2010 CFR

    2010-04-01

    ... information for use in implementing cost-effective pavement reconstruction, rehabilitation, and preventive maintenance programs and policies, and that results in pavement designed to accommodate current and forecasted....C. 204 to address transportation needs of Federal and Indian lands. Federal lands pavement...

  13. 23 CFR 970.104 - Definitions.

    Code of Federal Regulations, 2011 CFR

    2011-04-01

    ... information for use in implementing cost-effective pavement reconstruction, rehabilitation, and preventive maintenance programs and policies, and that results in pavement designed to accommodate current and forecasted....C. 204 to address transportation needs of Federal and Indian lands. Federal lands pavement...

  14. 23 CFR 970.104 - Definitions.

    Code of Federal Regulations, 2012 CFR

    2012-04-01

    ... information for use in implementing cost-effective pavement reconstruction, rehabilitation, and preventive maintenance programs and policies, and that results in pavement designed to accommodate current and forecasted....C. 204 to address transportation needs of Federal and Indian lands. Federal lands pavement...

  15. 23 CFR 970.104 - Definitions.

    Code of Federal Regulations, 2013 CFR

    2013-04-01

    ... information for use in implementing cost-effective pavement reconstruction, rehabilitation, and preventive maintenance programs and policies, and that results in pavement designed to accommodate current and forecasted....C. 204 to address transportation needs of Federal and Indian lands. Federal lands pavement...

  16. 23 CFR 973.104 - Definitions.

    Code of Federal Regulations, 2010 CFR

    2010-04-01

    ... cost-effective pavement reconstruction, rehabilitation, and preventive maintenance programs and policies, and that results in pavement designed to accommodate current and forecasted traffic in a safe... goods to levels that meet Federal, State and local needs. Indian lands pavement management system (PMS...

  17. 23 CFR 971.104 - Definitions.

    Code of Federal Regulations, 2012 CFR

    2012-04-01

    .... Federal lands pavement management system (PMS) means a systematic process used by the FS, FWS, and NPS that provides information for use in implementing cost-effective pavement reconstruction, rehabilitation, and preventive maintenance programs and policies, and that results in pavement designed to...

  18. 23 CFR 973.104 - Definitions.

    Code of Federal Regulations, 2014 CFR

    2014-04-01

    ... cost-effective pavement reconstruction, rehabilitation, and preventive maintenance programs and policies, and that results in pavement designed to accommodate current and forecasted traffic in a safe... goods to levels that meet Federal, State and local needs. Indian lands pavement management system (PMS...

  19. 23 CFR 971.104 - Definitions.

    Code of Federal Regulations, 2014 CFR

    2014-04-01

    .... Federal lands pavement management system (PMS) means a systematic process used by the FS, FWS, and NPS that provides information for use in implementing cost-effective pavement reconstruction, rehabilitation, and preventive maintenance programs and policies, and that results in pavement designed to...

  20. 23 CFR 970.104 - Definitions.

    Code of Federal Regulations, 2014 CFR

    2014-04-01

    ... information for use in implementing cost-effective pavement reconstruction, rehabilitation, and preventive maintenance programs and policies, and that results in pavement designed to accommodate current and forecasted....C. 204 to address transportation needs of Federal and Indian lands. Federal lands pavement...

  1. 23 CFR 973.104 - Definitions.

    Code of Federal Regulations, 2011 CFR

    2011-04-01

    ... cost-effective pavement reconstruction, rehabilitation, and preventive maintenance programs and policies, and that results in pavement designed to accommodate current and forecasted traffic in a safe... goods to levels that meet Federal, State and local needs. Indian lands pavement management system (PMS...

  2. 23 CFR 971.104 - Definitions.

    Code of Federal Regulations, 2013 CFR

    2013-04-01

    .... Federal lands pavement management system (PMS) means a systematic process used by the FS, FWS, and NPS that provides information for use in implementing cost-effective pavement reconstruction, rehabilitation, and preventive maintenance programs and policies, and that results in pavement designed to...

  3. 23 CFR 971.104 - Definitions.

    Code of Federal Regulations, 2010 CFR

    2010-04-01

    .... Federal lands pavement management system (PMS) means a systematic process used by the FS, FWS, and NPS that provides information for use in implementing cost-effective pavement reconstruction, rehabilitation, and preventive maintenance programs and policies, and that results in pavement designed to...

  4. Quiet Pavement Pilot Program : Progress Report 3

    DOT National Transportation Integrated Search

    2012-09-01

    Since 2003, the Arizona Department of Transportation (ADOT) has been conducting a Quiet Pavement : Pilot Program (QPPP) in cooperation with the Federal Highway Administration (FHWA). This report : presents the noise findings of this research through ...

  5. Summary report on the performance of open graded friction course quieter pavements : I-5 Lynnwood, SR-520 Medina, I-405 Bellevue.

    DOT National Transportation Integrated Search

    2013-09-01

    This document summarizes the acoustic properties and pavement performance of three asphalt quieter pavement projects. Each of the projects included open graded friction course pavement built with sections of crumb rubber and polymer modified asphalt ...

  6. Finite element simulation of structural performance on flexible pavements with stabilized base/treated sub-base materials under accelerated loading : research project capsule.

    DOT National Transportation Integrated Search

    2008-12-01

    PROBLEM: The full-scale accelerated pavement testing (APT) provides a unique tool for pavement : engineers to directly collect pavement performance and failure data under heavy : wheel loading. However, running a full-scale APT experiment is very exp...

  7. Finite element simulation of structural performance on flexible pavements with stabilized base/treated subbase materials under accelerated loading : tech summary.

    DOT National Transportation Integrated Search

    2011-12-01

    Accelerated pavement testing (APT) has been increasingly used by state highway agencies in recent years for evaluating pavement : design and performance through applying a simulative heavy vehicular load to the pavement section under controlled fi el...

  8. California state of the pavement report, 1999

    DOT National Transportation Integrated Search

    2001-03-01

    This report presents the results of the 1999 Pavement Condition Survey for the State of California. It gives an overview of pavement conditions, vehicle miles traveled on rough pavements, needs classification, and pavement performance. For each of th...

  9. Accelerated pavement testing of low-volume paved roads with geocell reinforcement : [technical summary].

    DOT National Transportation Integrated Search

    2015-03-01

    The Midwest States Accelerated Pavement Testing Pooled-Fund Program, financed : by the highway departments of Kansas, Iowa, Missouri, and New York, has : supported an accelerated pavement testing (APT) project to study the rehabilitation : of low-vol...

  10. A traffic data plan for mechanistic-empirical pavement designs (2002 pavement design guide).

    DOT National Transportation Integrated Search

    2003-01-01

    The Virginia Department of Transportation (VDOT) is preparing to implement the mechanistic-empirical pavement design methodology being developed under the National Cooperative Research Program's Project 1-37A, commonly referred to as the 2002 Pavemen...

  11. 23 CFR 972.104 - Definitions.

    Code of Federal Regulations, 2014 CFR

    2014-04-01

    ... and Indian lands. Federal lands pavement management system (PMS) means a systematic process used by the FS, FWS and NPS that provides information for use in implementing cost-effective pavement reconstruction, rehabilitation, and preventive maintenance programs and policies and that results in pavement...

  12. 23 CFR 972.104 - Definitions.

    Code of Federal Regulations, 2013 CFR

    2013-04-01

    ... and Indian lands. Federal lands pavement management system (PMS) means a systematic process used by the FS, FWS and NPS that provides information for use in implementing cost-effective pavement reconstruction, rehabilitation, and preventive maintenance programs and policies and that results in pavement...

  13. 23 CFR 972.104 - Definitions.

    Code of Federal Regulations, 2011 CFR

    2011-04-01

    ... and Indian lands. Federal lands pavement management system (PMS) means a systematic process used by the FS, FWS and NPS that provides information for use in implementing cost-effective pavement reconstruction, rehabilitation, and preventive maintenance programs and policies and that results in pavement...

  14. 23 CFR 972.104 - Definitions.

    Code of Federal Regulations, 2012 CFR

    2012-04-01

    ... and Indian lands. Federal lands pavement management system (PMS) means a systematic process used by the FS, FWS and NPS that provides information for use in implementing cost-effective pavement reconstruction, rehabilitation, and preventive maintenance programs and policies and that results in pavement...

  15. 23 CFR 972.104 - Definitions.

    Code of Federal Regulations, 2010 CFR

    2010-04-01

    ... and Indian lands. Federal lands pavement management system (PMS) means a systematic process used by the FS, FWS and NPS that provides information for use in implementing cost-effective pavement reconstruction, rehabilitation, and preventive maintenance programs and policies and that results in pavement...

  16. Three-dimensional modeling of flexible pavements : research implementation plan.

    DOT National Transportation Integrated Search

    2006-02-14

    Many of the asphalt pavement analysis programs are based on linear elastic models. A linear viscoelastic models : would be superior to linear elastic models for analyzing the response of asphalt concrete pavements to loads. There : is a need to devel...

  17. Winter tenting of highway pavements : test program and discussion of causes and mechanisms

    DOT National Transportation Integrated Search

    2000-10-28

    Tenting consists of localized frost heaving in the immediate vicinity of transverse pavement cracks. It produces a highly irregular riding : surface, leads to premature pavement-surface deterioration, occurs on highways designed for high traffic volu...

  18. Framework for LTPP Forensic Investigations--Final

    DOT National Transportation Integrated Search

    2004-04-01

    The purpose of this document is to provide a framework for forensic investigations at Long-Term Pavement Performance (LTPP) test sections. The framework is intended to promote consistency and uniformity within the program and to ensure that maximum b...

  19. Effectiveness of crack sealing on pavement serviceability and life.

    DOT National Transportation Integrated Search

    2011-06-01

    This report presents the details of a study to evaluate effectiveness of Ohio Department of Transportations prevailing crack sealing program. Evaluation was performed through field monitoring a large number of crack sealed and control sections. Fi...

  20. Long Term Pavement Performance (LTPP) climatic database revision and expansion

    DOT National Transportation Integrated Search

    2014-03-07

    In 2012, the Federal Highway Administration (FHWA) established the Health in Transportation Working Group to examine the agencys existing policies and programs and their impacts on health-related issues such as air quality, active transportation, ...

  1. Highway concrete pavement technology development and testing : volume III, field evaluation of Strategic Highway Research Program (SHRP) C-205 test sites (high-performance concrete).

    DOT National Transportation Integrated Search

    2006-05-01

    This research study, sponsored by the Federal Highway Administration, summarizes the field performance of eight high-early-strength (HES) : concrete patches between 1994 and 1998. The patches were constructed under the Strategic Highway Research Prog...

  2. MoDOT pavement preservation research program volume VII, re-calibration of triggers and performance models.

    DOT National Transportation Integrated Search

    2015-10-01

    The objective of this task is to develop the concept and framework for a procedure to routinely create, re-calibrate, and update the : Trigger Tables and Performance Models. The scope of work for Task 6 includes a limited review of the recent pavemen...

  3. Evaluating the effectiveness of performance based pavement marking maintenance contracts in Texas.

    DOT National Transportation Integrated Search

    2014-01-01

    Performance-based pavement marking maintenance contracts (PBPMMCs) are one of the latest : mechanisms used to maintain adequate pavement marking performance levels. TxDOT has issued two : PBPMMCs, but the effectiveness of these contracts as compared ...

  4. Base course resilient modulus for the mechanistic-empirical pavement design guide : [summary].

    DOT National Transportation Integrated Search

    2011-01-01

    Elastic modulus determination is often used in designing pavements and evaluating pavement performance. The Mechanistic-Empirical Pavement Design Guide (MEPDG) has become an important source of guidance for pavement design and rehabilitation. MEPDG r...

  5. Pavement marking performance analysis

    DOT National Transportation Integrated Search

    2009-06-30

    This research evaluated pavement marking performance and developed useful degradation models for thermoplastic : and paint pavement markings which can help North Carolina meet the pending FHWA minimum retroreflectivity : requirements. The impacts of ...

  6. Development of flexible pavement database for local calibration of MEPDG : volume 1.

    DOT National Transportation Integrated Search

    2011-06-01

    The new mechanistic-empirical pavement design guide (MEPDG), based on the National Cooperative Highway : Research Program (NCHRP) study 1-37A, replaces the widely used but more empirical 1993 AASHTO Guide : for Design of Pavement Structures. The MEPD...

  7. Mechanistic-Empirical Pavement Design Guide Flexible Pavement Performance Prediction Models Volume III Field Guide - Calibration and User's Guide for the Mechanistic-Empirical Pavement Design Guide

    DOT National Transportation Integrated Search

    2007-08-01

    The objective of this research study was to develop performance characteristics or variables (e.g., ride quality, rutting, : fatigue cracking, transverse cracking) of flexible pavements in Montana, and to use these characteristics in the : implementa...

  8. Validation of pavement performance curves for the mechanistic-empirical pavement design guide.

    DOT National Transportation Integrated Search

    2009-02-01

    The objective of this research is to determine whether the nationally calibrated performance models used in the Mechanistic-Empirical : Pavement Design Guide (MEPDG) provide a reasonable prediction of actual field performance, and if the desired accu...

  9. Performance trends of rehabilitated AC pavements

    DOT National Transportation Integrated Search

    2000-10-01

    The General Pavement Study (GPS) 6 experiment, "AC Overlay of AC Pavements," involves pavement test sections where an asphalt concrete (AC) overlay was placed on an existing AC pavement. This TechBrief summarizes the results of a study of the GPS-6 e...

  10. Long-term pavement performance compliance with Department of Transportation information dissemination quality guidelines

    DOT National Transportation Integrated Search

    2008-11-01

    This document provides information on the compliance of the LTPP program with the guidelines the Department of Transportation (DOT) issued Information Dissemination Quality Guidelines (IDQG). These guidelines were developed in response to requirement...

  11. LTPP beyond FY 2009 : what needs to be done?

    DOT National Transportation Integrated Search

    2009-01-01

    This report summarizes the current status of the Long-Term Pavement Performance (LTPP) program and its major activities -- data collection, data storage, data analysis, and product development. It describes the work that will be needed beyond 2009 to...

  12. Evaluation of the Performance of Texas Pavements Made with Different Coarse Aggregates

    DOT National Transportation Integrated Search

    2000-10-01

    This report summarizes 23 years of work undertaken in Texas to understand the reasons for significant performance differences found in pavements placed around the state. To a significant degree, pavement performance can be predicted based on the conc...

  13. Evaluation of Precast Panels for Airfield Pavement Repair. Phase 2: Results of Accelerated Pavement Testing

    DTIC Science & Technology

    2013-09-01

    ER D C/ G SL T R -1 3 -2 4 Evaluation of Precast Panels for Airfield Pavement Repair Phase II: Results of Accelerated Pavement Testing...default. ERDC/GSL TR-13-24 September 2013 Evaluation of Precast Panels for Airfield Pavement Repair Phase II: Results of Accelerated Pavement ... pavement testing using a C-17 load cart to evaluate the performance of a precast portland cement concrete (PCC) pavement repair system. The system

  14. Evaluation of pavement marking performance.

    DOT National Transportation Integrated Search

    2008-06-01

    The objective of the investigation was to evaluate the useful life of pavement markings. The Manual on Uniform Traffic Control Devices (MUTCD) provides general guidelines for the application and installation of pavement markings. However, performance...

  15. Evaluation of the Performance of Texas Pavements Made with Different Coarse Aggregates: Project Summary Report

    DOT National Transportation Integrated Search

    1998-09-01

    This report summarizes 23 years of work undertaken in Texas to understand the reasons for significant performance differences found in pavements placed around the state. To a significant degree, pavement performance can be predicted based on the conc...

  16. Current practices in pavement performance modeling project 08-03 (C07) : task 4 report final summary of findings.

    DOT National Transportation Integrated Search

    2010-02-26

    In anticipation of developing pavement performance models as part of a proposed pavement management : system, the Pennsylvania Department of Transportation (PennDOT) initiated a study in 2009 to investigate : performance modeling activities and condi...

  17. MoDOT pavement preservation research program volume VI, pavement treatment trigger tables/decision trees and treatment candidate selection process.

    DOT National Transportation Integrated Search

    2015-10-01

    The objective of Task 5 was the development of pavement treatment trigger tables and the treatment candidate selection process. : The input to the trigger tables entails such factors as an overall condition indicator, smoothness, individual distress ...

  18. Rutgers/NJDOT Pavement Resource Program (NJDOT Statewide GPR Project Network GPR Data Collection and Analysis Update of HPMA GPR Database)

    DOT National Transportation Integrated Search

    2008-05-01

    Center for Advanced Transportation Infrastructure (CAIT) of Rutgers University is mandated to conduct Ground Penetrating Radar (GPR) surveys to update the NJDOT's pavement management system with GPR measured pavement layer thicknesses. Based on the r...

  19. Iowa calibration of MEPDG performance prediction models.

    DOT National Transportation Integrated Search

    2013-06-01

    This study aims to improve the accuracy of AASHTO Mechanistic-Empirical Pavement Design Guide (MEPDG) pavement : performance predictions for Iowa pavement systems through local calibration of MEPDG prediction models. A total of 130 : representative p...

  20. Evaluation of experimental flexible pavements : final report.

    DOT National Transportation Integrated Search

    1979-01-01

    The construction and performance of seven Virginia flexible pavements containing at least some experimental features were evaluated. The objective was to evaluate the performance of the pavements incorporating new or timely design concepts and to ass...

  1. Pavement Performance : Approaches Using Predictive Analytics

    DOT National Transportation Integrated Search

    2018-03-23

    Acceptable pavement condition is paramount to road safety. Using predictive analytics techniques, this project attempted to develop models that provide an assessment of pavement condition based on an array of indictors that include pavement distress,...

  2. Minnesota Local Agency Pavement Marking : Mining Existing Data

    DOT National Transportation Integrated Search

    2017-11-01

    Pavement marking is important for safety. Maximizing pavement marking performance in terms of increased retroreflectivity, within limited budget constraints, allows agencies to make better decisions toward providing more effective pavement marking pe...

  3. Research review of potential safety effects of electronic billboards on driver attention and distraction

    DOT National Transportation Integrated Search

    1998-03-01

    The Strategic Highway Research Program developed and coordinated construction of test sections for flexible pavement maintenance throughout the United States and Canada. Test sites included specific test sections for evaluation of the performance of ...

  4. Evaluation of Louisiana's maintenance chip seal and micro-surfacing program.

    DOT National Transportation Integrated Search

    2002-07-01

    This report focuses valuation of Louisiana DOTD's chip seal and micro-surfacing treatments. The report discusses the performance in terms of Pavement Condition Index (PCI) of 40 chip seal and 24 micro-surface projects after approximately 52 months of...

  5. Recycled concrete aggregate : field implementation at the Stan Musial Veterans Memorial Bridge.

    DOT National Transportation Integrated Search

    2014-08-01

    The main objective of this research is to evaluate the feasibility of using RCA for concrete production in rigid pavement applications. : The experimental program was undertaken to investigate the performance of different concrete made with different...

  6. Accelerated testing for studying pavement design and performance (FY 2002) : research summary.

    DOT National Transportation Integrated Search

    2004-01-01

    This report covers the Fiscal Year 2002 project conducted at the Accelerated Testing : Laboratory at Kansas State University. The project was selected and funded by the : Midwest States Accelerated Testing Pooled Fund Program, which includes Iowa, Ka...

  7. Quantification of smoothness index differences related to LTPP equipment type : tech brief.

    DOT National Transportation Integrated Search

    2006-07-01

    Researchers in the Long-Term Pavement Performance : (LTPP) program are conducting a major data collection : effort. They are using an inertial profiler to collect longitudinal : profile data at regular intervals on two wheelpaths : located along the ...

  8. Monitoring and modeling of pavement response and performance : executive summary report.

    DOT National Transportation Integrated Search

    2010-06-01

    Objective: : Over the years, the Ohio Department of Transportation has : constructed several pavements with a range of designs and : materials to study and improve overall statewide : performance. These pavements require constant monitoring : to dete...

  9. Implementation of new pavement performance prediction models in PMIS : report

    DOT National Transportation Integrated Search

    2012-08-01

    Pavement performance prediction models and maintenance and rehabilitation (M&R) optimization processes : enable managers and engineers to plan and prioritize pavement M&R activities in a cost-effective manner. : This report describes TxDOTs effort...

  10. Performance of a thirty-two year old concrete pavement

    DOT National Transportation Integrated Search

    1996-01-01

    This report reviews pavement performance testing results on an experimental concrete pavement built on Minnesota T.H. 36 in 1958 that contains variations in joint spacing, reinforcement, dowels, and transverse joint fillers. South Dakota Profile Serv...

  11. Mobile geographic information system solution for pavement condition surveys [summary].

    DOT National Transportation Integrated Search

    2012-01-01

    The State Materials Office (SMO) of the Florida : Department of Transportation (FDOT) performs : annual Pavement Condition Surveys (PCS) of : the Departments extensive pavement network. : This work is performed by single-person crews in : inertial...

  12. Texas flexible pavements and overlays : year 5 report - complete data documentation.

    DOT National Transportation Integrated Search

    2017-05-01

    Proper calibration and validation of pavement design and performance models to Texas conditions is : essential for cost-effective flexible pavement design, performance predictions, and maintenance/rehab : strategies. The veracity of the calibration o...

  13. Evaluation of Pavement Safety Performance

    DOT National Transportation Integrated Search

    2015-02-01

    The intent of this study was to isolate the effects of various low-cost pavement treatments on roadway safety. This was a retrospective study of pavement safety performance, looking back at crash data before and after treatments were installed. Both ...

  14. Effectiveness of various public private partnership pavement rehabilitation treatments: A big data informatics survival analysis of pavement service life : final report.

    DOT National Transportation Integrated Search

    2017-09-29

    Past research efforts have used a wide variety of methodological approaches to analyze pavement performance indicators, pavement rehabilitation treatments, and pavement service life. Using big data informatics methods, the intent of this study is to ...

  15. Pavement design and performance studies : progress report no. 4 on phase A, performance study of typical Virginia pavements.

    DOT National Transportation Integrated Search

    1970-01-01

    The performance of in-service typical Virginia flexible and rigid pavements in all areas of the state is under evaluation. The objectives are to provide a ready reference for designers and field engineers and to provide background information for des...

  16. Evaluation of MDOT's Distress Thresholds for Maintained Pavement Projects

    DOT National Transportation Integrated Search

    2012-07-30

    As an alternative to traditional contracting, pavement warranty has been adopted in Mississippi since 2000, aimed to : enhance pavement performance and protect the investment in pavement construction. Currently, a manual distress survey : method and ...

  17. Three dimensional modeling of rigid pavement : executive summary, February 1995.

    DOT National Transportation Integrated Search

    1995-02-17

    A finite-element program has been developed to model the response of rigid pavement to both static loads and temperature changes. The program is fully three-dimensional and incorporates not only the common twenty-node brick element but also a thin in...

  18. Three-dimensional modeling of rigid pavement : final report, September 1995.

    DOT National Transportation Integrated Search

    1995-02-17

    A finite-element program has been developed to model the response of rigid pavement to both static loads and temperature changes. The program is fully three-dimensional and incorporates not only the common twenty-node brick element but also a thin in...

  19. Development of index based pavement performance models for pavement management system (PMS) of LADOTD.

    DOT National Transportation Integrated Search

    2009-03-01

    This report focuses on pavement performance and treatment models for Louisiana Department of : Transportation and Development (LADOTD) and is in continuation of Louisiana Transportation : Research Center (LTRC) Report No. 430 Development of Unifor...

  20. Effect of drainage in unbound aggregate bases on flexible pavement performance.

    DOT National Transportation Integrated Search

    2008-05-01

    It has been well demonstrated that a positive subsurface drainage is beneficial in enhancing pavement performance and thus extending pavement service life. Typical permeable base materials include asphalt/cement-treated, open-graded aggregates and un...

  1. Evaluation of flexible pavement performance using LTPP data.

    DOT National Transportation Integrated Search

    2002-07-01

    Pavements are complicated physical structures responding in a complex way to : the influence of many variables. Understanding how the long-term performance of : pavement: relates to the factors such as environmental and traffic loads is key to : buil...

  2. Performance and cost effectiveness of permeable friction course (PFC) pavements.

    DOT National Transportation Integrated Search

    2013-02-01

    In this project, the research team evaluated the performance of Permeable Friction Courses (PFC) over time and compared it against other types of wearing surface pavement layers. Several pavement sections including Asphalt Rubber (AR) PFCs, Performan...

  3. Wet night visibility of pavement markings.

    DOT National Transportation Integrated Search

    2004-01-01

    This report describes an investigation into the performance of pavement markings in wet night conditions. The performance of a typical pavement marking will degrade when it gets wet. This is a result of the flooding of the marking optics, thereby red...

  4. Monitoring and modeling of pavement response and performance : task A, Ohio.

    DOT National Transportation Integrated Search

    2010-06-01

    Over the years, the Ohio Department of Transportation has constructed several pavements with a range of : designs and materials to study and improve overall statewide performance. These pavements require constant : monitoring to determine how they pe...

  5. Effects of Heavy Vehicle Characteristics on Pavement Response and Performance---Phase II

    DOT National Transportation Integrated Search

    1991-12-31

    The objective of this research was to analyze and evaluate the interaction between heavy vehicle characteristics and pavement performance for application in pavement management. Heavy vehicle (truck and bus) characteristics include tire types (bias p...

  6. Composite pavement systems : synthesis of design and construction practices.

    DOT National Transportation Integrated Search

    2008-01-01

    Composite pavement systems have shown the potential for becoming a cost-effective pavement alternative for highways with high and heavy traffic volumes, especially in Europe. This study investigated the design and performance of composite pavement st...

  7. Analysis of aggregates and binders used for the ODOT chip seal program.

    DOT National Transportation Integrated Search

    2010-11-30

    This project compared the results of laboratory characterization of chip seal aggregate samples for Oklahoma DOT Divisions 1,2,3,5 and 6 with performance data from the Pavement Management System (PMS) database. Binder evaluation was limited to identi...

  8. CRCP-9: Improved Computer Program for Mechanistic Analysis of Continuously Reinforced Concrete Pavements

    DOT National Transportation Integrated Search

    2001-02-01

    A new version of the CRCP computer program, CRCP-9, has been developed in this study. The numerical model of the CRC pavements was developed using finite element theories, the crack spacing prediction model was developed using the Monte Carlo method,...

  9. Wet night visibility of pavement markings : executive summary.

    DOT National Transportation Integrated Search

    2004-01-01

    This executive summary describes an investigation into the performance of pavement markings in wet night conditions. The performance of a typical pavement marking will degrade when it gets wet. This is a result of the flooding of the marking optics, ...

  10. Mechanistic-Empirical Pavement Design Guide Flexible Pavement Performance Prediction Models Volume II Reference Manual

    DOT National Transportation Integrated Search

    2007-08-01

    The objective of this research study was to develop performance characteristics or variables (e.g., ride quality, rutting, : fatigue cracking, transverse cracking) of flexible pavements in Montana, and to use these characteristics in the : implementa...

  11. Historical performance evaluation of Iowa pavement treatments using data analytics : final report.

    DOT National Transportation Integrated Search

    2016-11-01

    The pavement network in Iowa has reached a mature state making maintenance and rehabilitation activities more important than new construction. As such, a need exists to evaluate the performance of the pavement treatments and estimate their performanc...

  12. Highway concrete pavement technology development and testing. Volume I, Field evaluation of strategic highway research program (SHRP) C-202 test sites (alkali-silica reactions (ASR))

    DOT National Transportation Integrated Search

    2006-08-01

    This study consists of continued field evaluations of treatments to four pavements suffering from distress due to alkali-silica reaction (ASR). One set of treatments was evaluated on existing pavements in Delaware, California, and Nevada that already...

  13. Texas flexible pavements overlays : review and analysis of existing databases.

    DOT National Transportation Integrated Search

    2011-12-01

    Proper calibration of pavement design and rehabilitation performance models to : conditions in Texas is essential for cost-effective flexible pavement design. The degree of : excellence with which TxDOTs pavement design models is calibrated will d...

  14. Development of measures to improve field performance of retroreflective raised pavement markers.

    DOT National Transportation Integrated Search

    2009-02-01

    Retroreflective raised pavement markers (RRPMs) are routinely used in Texas to supplement highway : pavement markings. In recent years, problems of marker failure such as poor retention on pavements, : physical damage, and loss of retroreflectivity a...

  15. Evaluation of MDOT's Distress Thresholds for Maintained June 30, 2012 Pavement Projects

    DOT National Transportation Integrated Search

    2012-05-30

    As an alternative to traditional contracting, pavement warranty has been adopted in Mississippi since 2000, aimed to : enhance pavement performance and protect the investment in pavement construction. Currently, a manual distress survey : method and ...

  16. An overview of joint deterioration in concrete pavement : mechanisms, solution properties, and sealers.

    DOT National Transportation Integrated Search

    2013-01-01

    Concrete pavements represent a large portion of the transportation : infrastructure. While the vast majority of concrete pavements : provide excellent long-term performance, a portion of these : pavements have recently shown premature joint deteriora...

  17. Analysis on mechanics response of long-life asphalt pavement at moist hot heavy loading area

    NASA Astrophysics Data System (ADS)

    Xu, Xinquan; Li, Hao; Wu, Chuanhai; Li, Shanqiang

    2018-04-01

    Based on the durability of semi-rigid base asphalt pavement test road in Guangdong Yunluo expressway, by comparing the mechanics response of modified semi-rigid base, RCC base and inverted semi-rigid base with the state of continuous, using four unit five parameter model to evaluate rut depth of asphalt pavement structure, and through commonly used fatigue life prediction model to evaluate fatigue performance of three types of asphalt pavement structure. Theoretical calculation and four years tracking observation results of test road show that rut depth of modified semi-rigid base asphalt pavement is the minimum, the road performance is the best, and the fatigue performance is the optimal.

  18. Crack identification for rigid pavements using unmanned aerial vehicles

    NASA Astrophysics Data System (ADS)

    Bahaddin Ersoz, Ahmet; Pekcan, Onur; Teke, Turker

    2017-09-01

    Pavement condition assessment is an essential piece of modern pavement management systems as rehabilitation strategies are planned based upon its outcomes. For proper evaluation of existing pavements, they must be continuously and effectively monitored using practical means. Conventionally, truck-based pavement monitoring systems have been in-use in assessing the remaining life of in-service pavements. Although such systems produce accurate results, their use can be expensive and data processing can be time consuming, which make them infeasible considering the demand for quick pavement evaluation. To overcome such problems, Unmanned Aerial Vehicles (UAVs) can be used as an alternative as they are relatively cheaper and easier-to-use. In this study, we propose a UAV based pavement crack identification system for monitoring rigid pavements’ existing conditions. The system consists of recently introduced image processing algorithms used together with conventional machine learning techniques, both of which are used to perform detection of cracks on rigid pavements’ surface and their classification. Through image processing, the distinct features of labelled crack bodies are first obtained from the UAV based images and then used for training of a Support Vector Machine (SVM) model. The performance of the developed SVM model was assessed with a field study performed along a rigid pavement exposed to low traffic and serious temperature changes. Available cracks were classified using the UAV based system and obtained results indicate it ensures a good alternative solution for pavement monitoring applications.

  19. Performance of concrete pavements with longitudinal tining, transverse tining, and carpet drag finish.

    DOT National Transportation Integrated Search

    2012-05-01

    This report documents the performance of concrete pavements constructed on I-5 in the vicinity of Federal : Way, Washington. The pavements were built using three types of texture; carpet drag, longitudinal tining, and : transverse tining. The pavemen...

  20. Development of cost-effective pavement treatment selection and treatment performance models : [tech summary].

    DOT National Transportation Integrated Search

    2015-09-01

    The overall objective of this study was to develop pavement treatment performance : models in support of cost-e ective selection of pavement treatment type, project : boundaries, and time of treatment. The development of the proposed models was ba...

  1. Development of index based pavement performance models for pavement management system (PMS) of LADOTD : tech summary.

    DOT National Transportation Integrated Search

    2009-03-01

    A research study was initiated by the Louisiana Department of Transportation and Development (LADOTD) in conjunction with the : Federal Highway Administration (FHWA) to evaluate the overall performance and eff ectiveness of LADOTDs Pavement Manage...

  2. Historical performance evaluation of Iowa pavement treatments using data analytics : tech transfer summary.

    DOT National Transportation Integrated Search

    2017-01-01

    Evaluate the performance of the most-used pavement treatments in Iowa by considering different parameters such as type of treatment, treatment thickness, traffic, and pavement type : Estimate a service life for each treatment based on the obs...

  3. Quantification of the effect of maintenance activities on Texas road network.

    DOT National Transportation Integrated Search

    2012-08-01

    Pavement structures are designed for a finite life, usually referred to as performance period. This performance period is typically between 20 to 25 years for flexible pavements and between 25 and 40 years for rigid pavements. After this period, the ...

  4. Mechanistic-Empirical Pavement Design Guide Flexible Pavement Performance Prediction Models Volume I Executive Research Summary

    DOT National Transportation Integrated Search

    2007-08-01

    The objective of this research study was to develop performance characteristics or variables (e.g., ride quality, rutting, : fatigue cracking, transverse cracking) of flexible pavements in Montana, and to use these characteristics in the : implementa...

  5. Development of an instrumentation plan for the Ohio SPS test pavement (DEL-23-17.48) : final report, October 1994.

    DOT National Transportation Integrated Search

    1994-07-01

    A Specific Pavement Studies (SPS) program, formulated under the Strategic Highway Research Program (SHRP), consists of nine experiments, four of which will be included in this DEL-23 project. Since the basic instrumentation plan proposed by SHRP was ...

  6. Development of an instrumentation plan for the Ohio SPS test pavement (DEL-23-17.48) : executive summary, July 1994.

    DOT National Transportation Integrated Search

    1994-07-01

    A Specific Pavement Studies (SPS) program, formulated under the Strategic Highway Research Program (SHRP), consists of nine experiments, four of which will be included in this DEL-23 project. Since the basic instrumentation plan proposed by SHRP was ...

  7. Determination of coefficient of thermal expansion effects on Louisiana's PCC pavement design.

    DOT National Transportation Integrated Search

    2011-12-01

    With the development of the Mechanistic Empirical Pavement Design Guide (MEPDG) as a new pavement design tool, the : coefficient of thermal expansion (CTE) is now considered a more important design parameter in estimating pavement : performance inclu...

  8. Evaluation and analysis of LTPP pavement layer thickness data

    DOT National Transportation Integrated Search

    2002-07-30

    In 2001, the Federal Highway Administration sponsored a study to review pavement layer thickness data for Long Term Pavement Performance (LTPP) sites. The main objective of the study was to assess the quality and completeness of pavement layering inf...

  9. Monitoring and modeling of pavement response and performance task B : New York, executive summary report.

    DOT National Transportation Integrated Search

    2012-01-01

    Problem: Perpetual asphalt concrete (AC) and long-lasting : Portland cement concrete (PCC) pavements are relatively : new to the pavement community. These newer pavements : require the use of innovative Mechanistic-Empirical (ME) : design procedures,...

  10. Asphalt surface treatment practice in southeastern United States : [tech summary].

    DOT National Transportation Integrated Search

    2014-09-01

    Pavement preservation is an approach in enhancing pavement performance using a set of practices that extends the life : of the pavement and improves safety and ride quality. According to the World Banks Pavement Deterioration Model, the : cost of ...

  11. Intelligent transportation systems for traffic incident management : deployment benefits and lessons learned.

    DOT National Transportation Integrated Search

    2001-01-01

    This report discusses why the Long Term Pavement Performance (LTPP) program is still important today; what the current investment in LTPP is; what the value of this investment is; the benefits of LTPP to date; falling weight deflectometer (FWD) calib...

  12. Key findings from the intelligent transportation systems (ITS) program, what have we learned?

    DOT National Transportation Integrated Search

    2000-06-01

    A study has been conducted to evaluate the quality and variability of the International Roughness Index (IRI) data in the Long Term Pavement Performance (LTPP) database. All LTPP profiles collected between June 1989 and October 1997 were visually rev...

  13. Calibration of material models for estimating impact of construction quality on life cycle performance of pavements.

    DOT National Transportation Integrated Search

    2006-02-01

    Constructing a pavement that will perform well throughout its expected design life is the main goal of any highway agency. The relationship between construction parameters and pavement life, defined by structural models, can be described using materi...

  14. Development of cost-effective pavement treatment selection and treatment performance models : research project capsule.

    DOT National Transportation Integrated Search

    2010-09-10

    The overall goal of this study is to develop pavement treatment performance models in support of the : cost-effective selection of pavement treatment types, project boundaries, and time of treatment. The : development of the proposed models will be b...

  15. Perform an investigation of the effects of increased reclaimed asphalt pavement (RAP) levels in dense graded friction courses.

    DOT National Transportation Integrated Search

    2015-04-01

    In this study, a total of 28 mixture combinations were designed and evaluated to : determine the maximum allowable amount of reclaimed asphalt pavement (RAP) : material in friction courses without jeopardizing pavement cracking performance. The : exp...

  16. Evaluation of crack-sealing milled pavement in the effort to reduce transverse cracking.

    DOT National Transportation Integrated Search

    2015-01-01

    To determine if crack sealing milled pavement prior to overlay will deter the : migration of transverse cracking, or have an effect on pavement performance, : when compared to an adjacent milled pavement that receives no crack sealing : treatment.

  17. Field investigation of high performance pavements in Virginia.

    DOT National Transportation Integrated Search

    2005-01-01

    This study evaluated 18 pavement sections located in high-traffic highways in Virginia to find a premium pavement design with a life span of 40 years or more using current and past field experience. The selected pavement sections were thought to perf...

  18. Strength and deformation characteristics of pavements

    NASA Astrophysics Data System (ADS)

    Shook, J. F.; Kallas, B. F.; McCullough, B. F.; Taute, A.; Rada, G.; Witczak, M. W.; Heisey, J. S.; Stokoe, K. H.; Meyer, A. H.; Huffman, M. S.

    The Colorado experimental base project was a full-scale field experment constructed with various thicknesses of two full depth hot mix sand asphalt beans, one full depth asphalt concrete base, and one thickness of a standard design with untreated base and subbase layers. Relative thicknesses of one asphalt concrete base, two hot mix sand asphalt bases, and one standard design with untreated base and subbase required to give an equal level of pavement performance were determined. Certain measured properties of the pavement and the pavement components were related to observed levels of performance by using both empirical and theoretical models for pavement behavior.

  19. Impact of variations in material properties on asphalt pavement life-evaluation of Warren-Scappoose project : interim report.

    DOT National Transportation Integrated Search

    1981-12-01

    Construction and short-term pavement performance problems were noted in the Pacific Northwest and throughout the United States during the past five years. Several reasons have been suggested to explain this sudden change in pavement performance, such...

  20. Impact of design features on pavement response and performance in rehabilitated flexible and rigid pavements.

    DOT National Transportation Integrated Search

    2011-10-01

    The primary focus of this research was to determine the effects of design and construction features, such as overlay : thickness and mix type, presence of milling, and type of restoration, on pavement response and performance and to : establish their...

  1. Evaluating pavement markings on portland cement concrete (PCC) and various asphalt surfaces : results of year 1 data collection.

    DOT National Transportation Integrated Search

    2013-12-01

    The Illinois Department of Transportation (IDOT) uses a variety of different pavement marking : systems and has experienced a wide range of pavement marking performance. In an effort to : maximize marking performance and to optimize marking selection...

  2. Evaluation and Development of Pavement Scores, Performance Models and Needs Estimates for the TXDOT Pavement Management Information System : Final Report

    DOT National Transportation Integrated Search

    2012-10-01

    This project conducted a thorough review of the existing Pavement Management Information System (PMIS) database, : performance models, needs estimates, utility curves, and scores calculations, as well as a review of District practices : concerning th...

  3. Aggregate Toughness/Abrasion Resistance and Durability/Soundness Tests Related to Asphalt Concrete Performance in Pavements

    DOT National Transportation Integrated Search

    1998-03-01

    The properties of aggregates used in asphalt concretes are very important to the performance of the pavements in which the asphalt concretes are used. Often pavement distress, such as stripping and rutting, can be traced directly to the aggregates us...

  4. The Tire Noise Performance of Nevada Highway Pavements: On-Board Sound Intensity (OBSI) Measurement

    DOT National Transportation Integrated Search

    2008-06-01

    On Board Sound Intensity measurements were conducted on freeway segments in the vicinity of Las Vegas and Reno, Nevada in an effort to document the tire-pavement noise levels of existing pavements. Tested pavements included Portland Cement Concrete (...

  5. Long-Term Pavement Performance Ohio SPS-1 and SPS-2 Dynamic Load Response Data Processing

    DOT National Transportation Integrated Search

    2015-03-01

    The dynamic load response (DLR) Study Team reinterpreted 4,290 Ohio Specific Pavement Studies (SPS)-1 (asphalt concrete pavements) raw traces and 9,240 Ohio SPS-2 (portland cement concrete pavements) raw traces, correcting the data issues identified ...

  6. Improved guidance for users of the 1993 AASHTO flexible pavement design procedures : LTPP TechBrief

    DOT National Transportation Integrated Search

    1997-08-01

    A key design challenge faced by engineers using the 1993 AASHTO Guide for Design of Pavement Structures (AASHTO Guide) is the determination of appropriate design parameters for the subgrade and pavement materials. The Long-Term Pavement Performance (...

  7. Evaluation of portland cement concrete pavement with high slag content cement.

    DOT National Transportation Integrated Search

    2013-10-01

    The performance of a section of concrete pavement built with 30 percent Ground Granulated Blast Furnace Slag (GGBFS) is compared to a control section of concrete pavement built with 25 percent GGBFS to determine if the higher slag content pavement is...

  8. Highway concrete pavement technology development and testing. Volume 2, field evaluation of strategic highway research program (SHRP) C-203 test sites (freeze-thaw resistance)

    DOT National Transportation Integrated Search

    2006-08-01

    Field test sections were constructed during 1992 as part of the Strategic Highway Research Program (SHRP) investigation of the frost resistance of concrete. The first freeze-thaw-related deterioration expected for pavement concrete exposed to de-icin...

  9. Analysis of seasonal strain measurements in asphalt materials under accelerated pavement testing and comparing field performance and laboratory measured binder tension properties.

    DOT National Transportation Integrated Search

    2009-06-01

    Seasonal variation of measured pavement responses with temperature and its relationship to pavement performance has not been : thoroughly evaluated for ALF Experiments II and III. Such information may be used to improve instrumentation strategies in ...

  10. PERFORMANCE-BASED CONTRACTING IN CONSTRUCTION PHASE AND MAINTENANCE PHASE OF PAVEMENT

    NASA Astrophysics Data System (ADS)

    Yoshida, Takeshi

    Performance-based contracting for pavement in Japan started as performance warranties in construction phase, in 1999. Recently, road agencies have recognized the applicability of this type of contracting in outsourcing of maintenance activities. The objectives of this study are to clarify the issues of performance specifying in construction phase and maintenance phase of pavement, and to propose measures to be taken. This paper, with the recognition that the life of each pavement depends on performance standards for various attributes, reviews domestic and foreign examples of performance-based contracting. A performance standard based on the average of current practices can enhance product quality and service life with a warranty contract. Repair thresholds and response time for each deficiency should be considered as performance standards in maintenance phase.

  11. Rutting Performance of Cold-Applied Asphalt Repair Materials for Airfield Pavements

    DTIC Science & Technology

    2017-06-23

    susceptibility of hot mix asphalt (HMA) using the asphalt pavement analyzer (APA). Designation T340- 10. Washington, DC: American Association of State...ER D C/ G SL T R- 17 -1 0 Rutting Performance of Cold-Applied Asphalt Repair Materials for Airfield Pavements G eo te ch ni ca l a nd S...of Cold-Applied Asphalt Repair Materials for Airfield Pavements Ben C. Cox, John F. Rushing, and Web Floyd Geotechnical and Structures Laboratory

  12. Environmental assessment of pavement infrastructure: A systematic review.

    PubMed

    Inyim, Peeraya; Pereyra, Jose; Bienvenu, Michael; Mostafavi, Ali

    2016-07-01

    Through a critical review and systematic analysis of pavement life cycle assessment (LCA) studies published over the past two decades, this study shows that the available information regarding the environmental impacts of pavement infrastructure is not sufficient to determine what pavement type is more environmentally sustainable. Limitations and uncertainties related to data, system boundary and functional unit definitions, consideration of use and maintenance phase impacts, are identified as the main reasons for inconsistency of reported results in pavement LCA studies. The study outcomes also highlight the need for advancement of knowledge pertaining to: (1) utilization of performance-adjusted functional units, (2) accurate estimation of use, maintenance, and end-of-life impacts, (3) incorporation of the dynamic and uncertain nature of pavement condition performance in impact assessment; (4) development of region-specific inventory data for impact estimation; and (5) consideration of a standard set of impact categories for comparison of environmental performance of different pavement types. Advancing the knowledge in these areas is critical in providing consistent and reliable results to inform decision-making toward more sustainable roadway infrastructure. Copyright © 2016 Elsevier Ltd. All rights reserved.

  13. Design and construction of PCC pavements, volume 2 : design features and practices that influence performance of pavements.

    DOT National Transportation Integrated Search

    1998-10-01

    A study has been conducted to evaluate and analyze portland cement concrete (PCC) pavements in order to : develop recommendations for the design and construction of long-lived concrete pavements. It involved a : detailed evaluation and analysis of th...

  14. Evaluation of MIT-SCAN-T2 for Thickness Quality Control for PCC and HMA Pavements

    DOT National Transportation Integrated Search

    2018-02-01

    Thickness is currently a pay item for PCC pavements and a quality control item for both PCC and HMA pavements. A change in pavement thickness of 0.5 in. can result in a change of multiple years of service. Current thickness measurements are performed...

  15. Field Performance of Fiber-Reinforced Concrete Airfield Pavements.

    DTIC Science & Technology

    1986-07-01

    were less severe at some fiver-reinforced concrete pavements at JFK airport in New York than at some of the other airports. The pavements at JFK ... airport did use a poly- ethylene sheet as a bond breaker between the fiber-reinforced overlay and base pavement. This may have helped reduce frictional

  16. Design and construction of PCC pavements. Volume 1, summary of design features and construction practices that influence performance of pavements

    DOT National Transportation Integrated Search

    1998-04-01

    A study has been conducted to evaluate and analyze Portland cement concrete (PCC) pavements in order to develop recommendations for the design and construction of long-lived concrete pavements. In involved a detailed evaluation and analysis of the PC...

  17. Design and construction of PCC pavements. Volume 2, design features and practices that influence performance of pavements

    DOT National Transportation Integrated Search

    1998-10-01

    A study has been conducted to evaluate and analyze Portland cement concrete (PCC) pavements in order to develop recommendations for the design and construction of long-lived concrete pavements. In involved a detailed evaluation and analysis of the PC...

  18. Mechanistic flexible pavement overlay design program.

    DOT National Transportation Integrated Search

    2009-07-01

    The current Louisiana Department of Transportation and Development (LADOTD) overlay thickness design method follows the Component : Analysis procedure provided in the 1993 AASHTO pavement design guide. Since neither field nor laboratory tests a...

  19. Georgia concrete pavement performance and longevity.

    DOT National Transportation Integrated Search

    2012-02-01

    The Georgia Department of Transportation (GDOT) has effectively utilized its pavement management system (PMS) to make informed, data-driven pavement maintenance decisions, including project selection, project prioritization, and funding allocation. C...

  20. Serviceable pavement marking retroreflectivity levels : technical report.

    DOT National Transportation Integrated Search

    2009-03-01

    This research addressed an array of issues related to measuring pavement markings retroreflectivity, factors : related to pavement marking performance, subjective evaluation process, best practices for using mobile : retroreflectometers, sampling pav...

  1. A review of performance models and test procedures with recommendations for use in the Texas m-e design program.

    DOT National Transportation Integrated Search

    2008-09-01

    In the first year of this project, a comprehensive review was made of the available models for : predicting the major distresses in flexible pavements, including cracking of asphalt layers and chemically : bound layers, permanent deformation of aspha...

  2. Resilient modulus and fatigue life characterization of asphalt concrete mixtures used in the Ohio Test Road : special student study

    DOT National Transportation Integrated Search

    1998-05-01

    The performance of flexible and rigid pavements depends not only on the effects of traffic but also on environmental effects. As part of the Federal Highway Administration's (FHWA) Strategic Highway Research Program (SHRP), a test road was recently c...

  3. Mechanistic design concepts for conventional flexible pavements

    NASA Astrophysics Data System (ADS)

    Elliott, R. P.; Thompson, M. R.

    1985-02-01

    Mechanical design concepts for convetional flexible pavement (asphalt concrete (AC) surface plus granular base/subbase) for highways are proposed and validated. The procedure is based on ILLI-PAVE, a stress dependent finite element computer program, coupled with appropriate transfer functions. Two design criteria are considered: AC flexural fatigue cracking and subgrade rutting. Algorithms were developed relating pavement response parameters (stresses, strains, deflections) to AC thickness, AC moduli, granular layer thickness, and subgrade moduli. Extensive analyses of the AASHO Road Test flexible pavement data are presented supporting the validity of the proposed concepts.

  4. Long term pavement performance computed parameter : frost penetration

    DOT National Transportation Integrated Search

    2008-11-01

    As the pavement design process moves toward mechanistic-empirical techniques, knowledge of seasonal changes in pavement structural characteristics becomes critical. Specifically, frost penetration information is necessary for determining the effect o...

  5. Saw & seal, airport pavement.

    DOT National Transportation Integrated Search

    2009-05-01

    Due to extreme cold temperatures, hot bituminous pavements on Maines airports are subject to transverse : or thermal cracking. This can lead to poorly performing pavement structure causing heaving and : settlement problems. Studies have shown that...

  6. Profilograph specification study.

    DOT National Transportation Integrated Search

    2010-10-01

    Pavement smoothness is probably the single most important indicator of pavement performance according to the traveling public. Rough or uneven pavements adversely affect driver safety, ride quality, fuel efficiency, and vehicle wear and tear. Rough p...

  7. Guidelines and implementation recommendations.

    DOT National Transportation Integrated Search

    2017-05-01

    Based on findings from the literature review, laboratory tests, and pavement performance : simulations, researchers concluded that the use of reclaimed asphalt pavement (RAP) in Portland : cement concrete (PCC) is largely feasible for the pavement ap...

  8. LTPP maintenance and rehabilitation data review

    DOT National Transportation Integrated Search

    2001-02-01

    The maintenance and rehabilitation (M&R) activities of pavement structures become increasingly important as pavements deteriorate with time and traffic. Since its inception, the Long Term Pavement Performance (LTPP) component of the Strategic Highway...

  9. Accelerated testing for studying pavement design and performance (FY 2000) : effectiveness of fiber reinforced and plain, ultra-thin concrete overlays on Portland Cement Concrete Pavement (PCCP).

    DOT National Transportation Integrated Search

    2003-11-01

    The objective of the research was to compare the performance of fiber reinforced and plain PCC concrete overlay when used as a thin non-dowelled overlay on top of a rubblized, distressed concrete pavement. The experiment was conducted at the Accelera...

  10. Optical microtopographic inspection of asphalt pavement surfaces

    NASA Astrophysics Data System (ADS)

    Costa, Manuel F. M.; Freitas, E. F.; Torres, H.; Cerezo, V.

    2017-08-01

    Microtopographic and rugometric characterization of surfaces is routinely and effectively performed non-invasively by a number of different optical methods. Rough surfaces are also inspected using optical profilometers and microtopographer. The characterization of road asphalt pavement surfaces produced in different ways and compositions is fundamental for economical and safety reasons. Having complex structures, including topographically with different ranges of form error and roughness, the inspection of asphalt pavement surfaces is difficult to perform non-invasively. In this communication we will report on the optical non-contact rugometric characterization of the surface of different types of road pavements performed at the Microtopography Laboratory of the Physics Department of the University of Minho.

  11. The effect of cracking on the deflection basin of flexible pavements

    NASA Astrophysics Data System (ADS)

    Omar, Hadi Mohamed

    Because of the rapid development of hardware and software during the past decade, it is now possible to use an analytical-empirical (or mechanistic) method of structural pavement evaluation on a routine basis. One reason for using this approach is the increased need for pavement maintenance and rehabilitation. To make the right choice from many potentially feasible maintenance and rehabilitation measures, the engineer must base his decision on a rational evaluation of the mechanical properties of the materials in the existing pavement structure. One of the parameters in terms of pavement response are the deflections; these are of interest to this particular study. The Falling Weight Deflectometer (FWD) has been developed specifically for the purpose of obtaining deflection measurements in order to determine the in-situ elastic moduli. The profile of the deflection at the surface of the pavement is known as the deflection basin, because it resembles a bowl-shaped depression. The magnitude of the deflections and the basin shape are functions of the number of layers making up the pavement cross section, their thicknesses, and their moduli values. A variety of multi-layered linear elastic pavement models are available for use at this present time. A general-purpose finite-element program called ANSYS developed by Swanson Analysis System is very powerful and is capable of solving a layered system such as the pavement. A finite element model was developed to study the effect of the crack on the predicted deflection bowls. A general-purpose finite-element program was used in this study due to its ability to solve this problem and because of the availability of the program. A hypothetical crack problem was assumed and modeled in different ways. The crack depth, crack width, and distance of the crack from the loading point were among the many parameters that were investigated. Considering the shape of the deflection basin, it is very important to study the effect of the crack on this bowl, when and where the cracks can be ignored, and when they would not play a significant effect. This study also addresses the importance of the field data and how the observed deflection basins compare with the predicted ones especially in aged pavements. This study has concluded that the location of a crack from the loading point is very significant to the deflection basin.

  12. Long term monitoring of moisture under pavements : executive summary report.

    DOT National Transportation Integrated Search

    2010-01-01

    The research : program consisted of three : distinct : activities. The first activity was a continuation of : the monitoring of environmental instrumentation : under select pavement sections constructed by the : Ohio Department of Transportation (ODO...

  13. Evaluation of NCHRP 747 Pavement Forensic Guide for GDOT’s Adoption

    DOT National Transportation Integrated Search

    2018-04-01

    This report presents the recommendation for whether the Georgia Department of Transportation (GDOT) should adopt the National Cooperative Highway Research Program (NCHRP) Report 747 (Guide for Conducting Forensic Investigations of Highway Pavements) ...

  14. Ground penetrating radar (GPR) for pavement evaluation.

    DOT National Transportation Integrated Search

    2012-12-01

    In the near future the Arkansas State Highway and Transportation Department Pavement Management System (PMS) will utilize a : Falling Weight Deflectometer (FWD) to collect network level pavement structural data to aid in predicting performance of pav...

  15. Best practices and performance assessment for preventive maintenance treatments for Virginia pavements.

    DOT National Transportation Integrated Search

    2015-08-01

    Preventive maintenance has the potential to improve network condition by retarding future pavement deterioration. This : report outlines guidelines for implementing a preventive maintenance policy for bituminous pavements. : Preventive maintenance tr...

  16. Development of cost-effective pavement treatment selection and treatment performance models.

    DOT National Transportation Integrated Search

    2015-09-01

    Louisiana Department of Transportation and Development (DOTD) has spent substantial financial resources on various : rehabilitation and maintenance treatments to minimize pavement distresses and improve pavement life. Such treatments : include, but a...

  17. Estimating Cumulative Traffic Loads, Final Report for Phase 1

    DOT National Transportation Integrated Search

    2000-07-01

    The knowledge of traffic loads is a prerequisite for the pavement analysis process, especially for the development of load-related distress prediction models. Furthermore, the emerging mechanistically based pavement performance models and pavement de...

  18. Deterioration of jointed Portland cement concrete pavements.

    DOT National Transportation Integrated Search

    1975-01-01

    Information has been gathered regarding the performance of more than 400 lane-miles of jointed PCC interstate pavements located in five construction districts in Virginia. The factors causing pavement deterioration have been identified, the processes...

  19. Subsurface condition evaluation for asphalt pavement preservation treatments.

    DOT National Transportation Integrated Search

    2013-04-01

    This report presents a case study on the SR70 section with microsurface for understanding its performance; a development of a : methodology for evaluating the asphalt pavement subsurface condition for applying pavement preservation treatments; and...

  20. LTPP pavement maintenance materials : SHRP joint reseal experiment, final report.

    DOT National Transportation Integrated Search

    1999-09-01

    The Strategic Highway Research Program (SHRP) H-106 maintenance experiment and the Federal Highway : Administration (FHWA) Long-Term Monitoring (LTM) of Pavement Maintenance Materials Test Sites project studied : the resealing of joints in concrete p...

  1. Consortium of accelerated pavement testers (CAPT).

    DOT National Transportation Integrated Search

    2016-05-01

    FHWA and a group of state Departments of Transportation from nine of the 14 US Accelerated : Pavement Testing (APT) facilities have proposed the creation of a joint or pooled funded program to : encourage coordination among the various facilities and...

  2. An Efficient and Accurate Genetic Algorithm for Backcalculation of Flexible Pavement Layer Moduli

    DOT National Transportation Integrated Search

    2012-12-01

    The importance of a backcalculation method in the analysis of elastic modulus in pavement engineering has been : known for decades. Despite many backcalculation programs employing different backcalculation procedures and : algorithms, accurate invers...

  3. WSDOT chip seals : optimal timing, design and construction considerations.

    DOT National Transportation Integrated Search

    2014-12-01

    The Washington State Department of Transportation (WSDOT) does not have sufficient pavement : preservation funding to keep up with inflation and pavement needs. This has caused WSDOT to : emphasize in its preservation program lower-cost options such ...

  4. Three-dimensional modeling of flexible pavements : executive summary, August 2001.

    DOT National Transportation Integrated Search

    2001-08-01

    A linear viscoelastic model has been incorporated into a three-dimensional finite element program for analysis of flexible pavements. Linear and quadratic versions of hexahedral elements and quadrilateral axisymmetrix elements are provided. Dynamic p...

  5. Three dimensional modeling of flexible pavements : final report, March 2002.

    DOT National Transportation Integrated Search

    2001-08-01

    A linear viscoelastic model has been incorporated into a three-dimensional finite element program for analysis of flexible pavements. Linear and quadratic versions of hexahedral elements and quadrilateral axisymmetrix elements are provided. Dynamic p...

  6. Instrumentation of a rigid pavement system : executive summary, November 1996.

    DOT National Transportation Integrated Search

    1996-11-01

    This research focused on development of a comprehensive field instrumentation program to measure the in-situ responses of a concrete pavement system subjected to Falling Weight Deflectometer (FWD) loading and various environmental conditions. Respons...

  7. Instrumentation of a rigid pavement system : final report, April 1997.

    DOT National Transportation Integrated Search

    2007-04-01

    This research focused on development of a comprehensive field instrumentation program to measure the in-situ responses of a concrete pavement system subjected to Falling Weight Deflectometer (FWD) loading and various environmental conditions. Respons...

  8. Minimization of reflection cracks in flexible pavements.

    DOT National Transportation Integrated Search

    1977-01-01

    This report describes the performance of fabrics used under overlays in an effort to minimize longitudinal and alligator cracking in flexible pavements. It is concluded, although the sample size is small, that the treatments will extend the pavement ...

  9. Evaluation of concrete pavements with materials-related distress : appendix G.

    DOT National Transportation Integrated Search

    2010-03-02

    An evaluation of cores sampled from six concrete pavements was performed. Factors contributing to pavement distress observed in the field were determined, including expansive alkali-silica reactivity and freeze-thaw deterioration related to poor entr...

  10. Development of a Rolling Dynamic Deflectometer for Continuous Deflection Testing of Pavements

    DOT National Transportation Integrated Search

    1998-05-01

    A rolling dynamic deflectometer (RDD) was developed as a nondestructive method for determining continuous deflection profiles of pavements. Unlike other commonly used pavement testing methods, the RDD performs continuous rather than discrete measurem...

  11. Software offers transparent, straightforward assessment of pavement additives : research spotlight.

    DOT National Transportation Integrated Search

    2015-04-01

    Adding new materials to pavement layers is a proven technique to : improve performance. Many types of additivesfrom engineered : polymers and acids to recycled pavement, crumb rubber, shingles : and glasshave been used to help construct better ...

  12. Traffic load spectra development for the 2002 AASHTO pavement design guide

    DOT National Transportation Integrated Search

    2004-12-30

    Accurate knowledge of traffic volumes and loading is essential to structural pavement design and performance. Underestimation of design traffic can result in premature pavement failures and excessive rehabilitation costs. Overestimation can result in...

  13. AASHTO mechanistic-empirical pavement design guide parametric study.

    DOT National Transportation Integrated Search

    2012-03-01

    This study focuses on assessing the robustness of the AASHTO Mechanistic-Empirical Pavement Design Guide (MEPDG v 1.1) for rigid pavement : design projects in Wisconsin. The primary tasks conducted in this study included performing sensitivity analys...

  14. Improving the Acoustical Performance of Porous Asphalt Pavements

    DOT National Transportation Integrated Search

    1999-09-01

    Selection of pavement for noise reduction considerations is becoming a major concern for those involved in highway construction within densely populated areas. However, the pavements available are designed for durability and safety reasons and not fo...

  15. Evaluation of concrete pavements with materials-related distress : final report.

    DOT National Transportation Integrated Search

    2010-03-02

    An evaluation of cores sampled from six concrete pavements was performed. Factors : contributing to pavement distress observed in the field were determined, including expansive : alkali-silica reactivity and freeze-thaw deterioration related to poor ...

  16. Evaluation of concrete pavements with materials-related distress : appendix F.

    DOT National Transportation Integrated Search

    2010-03-02

    An evaluation of cores sampled from six concrete pavements was performed. Factors contributing to pavement distress observed in the field were determined, including expansive alkali-silica reactivity and freeze-thaw deterioration related to poor entr...

  17. Evaluation of concrete pavements with materials-related distress : appendix E.

    DOT National Transportation Integrated Search

    2010-03-02

    An evaluation of cores sampled from six concrete pavements was performed. Factors contributing to pavement distress observed in the field were determined, including expansive alkali-silica reactivity and freeze-thaw deterioration related to poor entr...

  18. Evaluation of concrete pavements with materials-related distress : appendix D.

    DOT National Transportation Integrated Search

    2010-03-02

    An evaluation of cores sampled from six concrete pavements was performed. Factors contributing to pavement distress observed in the field were determined, including expansive alkali-silica reactivity and freeze-thaw deterioration related to poor entr...

  19. Evaluation of concrete pavements with materials-related distress : appendix B.

    DOT National Transportation Integrated Search

    2010-02-02

    An evaluation of cores sampled from six concrete pavements was performed. Factors contributing to pavement distress observed in the field were determined, including expansive alkali-silica reactivity and freeze-thaw deterioration related to poor entr...

  20. Long-term pavement performance indicators for failed materials.

    DOT National Transportation Integrated Search

    2016-04-01

    State Transportation Agencies (STAs) use quality control/quality assurance (QC/QA) specifications to guide the testing and inspection of : road pavement construction. Although failed materials of pavement rarely occur in practice, it is critical to h...

  1. Crackscope : automatic pavement cracking inspection system.

    DOT National Transportation Integrated Search

    2008-08-01

    The CrackScope system is an automated pavement crack rating system consisting of a : digital line scan camera, laser-line illuminator, and proprietary crack detection and classification : software. CrackScope is able to perform real-time pavement ins...

  2. High performance concrete pavement in Indiana.

    DOT National Transportation Integrated Search

    2011-01-01

    Until the early 1990s, curling and warping of Portland cement concrete pavement did not concern : pavement engineers in many transportation agencies. Since beginning construction of the interstate system in the : United States in the late 1950s throu...

  3. Evaluation of concrete pavements with materials-related distress : appendix C.

    DOT National Transportation Integrated Search

    2010-03-02

    An evaluation of cores sampled from six concrete pavements was performed. Factors contributing to pavement distress observed in the field were determined, including expansive alkali-silica reactivity and freeze-thaw deterioration related to poor entr...

  4. Designing Base and Subbase to Resist Environmental Effects on Pavements

    DOT National Transportation Integrated Search

    2018-02-02

    MnDOTs current pavement thickness design procedures do not characterize the effects of subgrade soil frost susceptibility. Previous research indicates frost action is the most severe environmental factor on pavement performance. The most accepted ...

  5. Comparison Of Rehabilitation Strategies For AC Pavements

    DOT National Transportation Integrated Search

    2000-11-01

    This TechBrief summarizes the results of a study of the Specific Pavement Study 5 (SPS-5) experiment entitled, "Performance of Rehabilitated Asphalt Concrete Pavements in the LTPP Experiments--Data Collected Through February 1997." The study document...

  6. Performance of Green Stormwater Management Practices at EPA’s Edison Environmental Center: Permeable Pavement and Bioretention

    EPA Science Inventory

    As part of the departmental Chemistry and Environmental Science weekly seminar series at NJIT in Newark, NJ, Rowe and Stander have been invited to conduct a joint presentation on UWMB’s green infrastructure research program, including the parking lot and rain garden studies. The...

  7. Development of Pavement Temperature Contours for India

    NASA Astrophysics Data System (ADS)

    Nivitha, M. R.; Krishnan, J. M.

    2014-06-01

    The stress-strain response of the bituminous pavements is highly sensitive to temperature. To systematically analyze the pavement performance, it is necessary that one understands the variation of pavement temperature spatially and temporally during the life time of a pavement. In this investigation, historic air temperature data for 37 locations across India was collected. Using this database, pavement temperature data was predicted by an appropriate air temperature-pavement temperature model. High and low temperature pavement temperature contours were generated for the first time for India. It was seen that the locations spanning from Srinagar to Madhya Pradesh and Rajasthan to Orissa were extremely critical. The minimum temperature in these locations was 10 C and the maximum temperature was around 68 C. Clearly such information is necessary when making choice of binder grade and bituminous layer thickness.

  8. Double layer drainage performance of porous asphalt pavement

    NASA Astrophysics Data System (ADS)

    Ji, Yangyang; Xie, Jianguang; Liu, Mingxi

    2018-06-01

    In order to improve the design reliability of the double layer porous asphalt pavement, the 3D seepage finite element method was used to study the drainage capacity of double layer PAC pavements with different geometric parameters. It revealed that the effect of pavement drainage length, slope, permeability coefficient and structure design on the drainage capacity. The research of this paper can provide reference for the design of double layer porous asphalt pavement in different rainfall intensity areas, and provide guides for the related engineering design.

  9. Life cycle cost analysis rehabilitation costs.

    DOT National Transportation Integrated Search

    2015-07-01

    This study evaluates data from CDOTs Cost Data books and Pavement Management Program. Cost : indices were used to normalize project data to year 2014. Data analyzed in the study was obtained from : the CDOTs Cost Data books and the Pavement Man...

  10. Revised Condition Rating Survey Models to Reflect All Distresses : Volume 1

    DOT National Transportation Integrated Search

    2018-04-01

    Pavement condition assessment plays a key role in infrastructure programming and planning processes. Similar to other state agencies, the Illinois Department of Transportation (IDOT) has been using a system to evaluate the condition of pavements sinc...

  11. MDOT Pavement Management System : Prediction Models and Feedback System

    DOT National Transportation Integrated Search

    2000-10-01

    As a primary component of a Pavement Management System (PMS), prediction models are crucial for one or more of the following analyses: : maintenance planning, budgeting, life-cycle analysis, multi-year optimization of maintenance works program, and a...

  12. LTPP pavement maintenance materials : PCC partial-depth spall repair experiment, final report.

    DOT National Transportation Integrated Search

    1999-10-01

    The Strategic Highway Research Program (SHRP) H-106 maintenance experiment and the Federal Highway Administration : (FHWA) Long-Term Monitoring (LTM) of Pavement Maintenance Materials Test Sites project studied the repair of partialdepth : spalls in ...

  13. Fifteen year performance review of Michigan's European concrete pavement.

    DOT National Transportation Integrated Search

    2010-02-01

    In 1993, a special pavement demonstration project was constructed in Detroit on NB I-75 to evaluate the design features of some highly acclaimed European rigid pavements. The Michigan Department of Transportation (MDOT) and the Federal Highway Admini...

  14. Longevity of highway pavements in Illinois : 2000 update

    DOT National Transportation Integrated Search

    2002-12-01

    Results of the latest round of pavement longevity studies in Illinois provide updated performance data through 2000 for HMAC, JRCP, : and CRCP new construction as well as AC overlays (first, second, and third overlays) of these original pavements. Th...

  15. 0-6687 : minimize premature distresses in continuously reinforced concrete pavement : [project summary].

    DOT National Transportation Integrated Search

    2013-08-01

    The performance of continuously reinforced concrete : pavement (CRCP) has been quite satisfactory in Texas, : providing one of the most cost-effective pavement systems : for the Texas Department of Transportation (TxDOT). : However, distresses do occ...

  16. Twenty year performance review of Michigan's European concrete pavement.

    DOT National Transportation Integrated Search

    2013-10-01

    In 1993, a special pavement demonstration project was constructed in Detroit on NB I-75 to evaluate the design features of some highly acclaimed European rigid pavements. The Michigan Department of Transportation (MDOT) and the Federal Highway Admini...

  17. Continuous real time measurement of pavement quality during construction.

    DOT National Transportation Integrated Search

    2010-12-01

    Intelligent Compaction has been investigated as a means of improving the quality of asphalt pavements during their : construction. The long term performance of an asphalt pavement is directly related to its load bearing capability and : is determined...

  18. Pavement performance evaluation, phase II : data collection.

    DOT National Transportation Integrated Search

    2008-12-01

    Phase I and II of this study tested approximately 1500 rehabilitated pavements (asphalt and PCC) : throughout the State. These pavements ranged from 5 to 15 years old and were intended to develop a : snapshot of how various rehabilitations were perfo...

  19. Demonstration of using quieter pavement in Death Valley National Park

    DOT National Transportation Integrated Search

    2013-06-01

    Death Valley National Park provided an environment that allowed a demonstration of : quieter pavement use. Sound measurements near the tire-pavement interface, near the : road, and in areas of frequent human use were conducted and analyses performed ...

  20. Performance of high RAP pavement sections in NH.

    DOT National Transportation Integrated Search

    2015-06-01

    This report summarizes the University of New Hampshire (UNH) results of test pavements used to : determine the effect of using higher amounts of Recycled Asphalt Pavement (RAP) in Hot Mix Asphalt : (HMA). : The New Hampshire Department of Transportat...

  1. A Study Of In-Place Rutting Of Asphalt Pavements

    DOT National Transportation Integrated Search

    1989-01-01

    The objective of this study was to evaluate in-place pavements experiencing rutting and pavements experiencing no rutting to begin to classify asphalt mixtures that should perform satisfactorily and those that would likely rut under traffic. The info...

  2. Pavement management system for City of Madison : research brief.

    DOT National Transportation Integrated Search

    2016-11-01

    In this study, a complete pavement management system (PMS) was created and implemented in : Madison, SD. The system consists of a street geodatabase, development of pavement performance : models and maintenance & rehabilitation (M&R) plans. The PMS d...

  3. Performance studies of continuously reinforced concrete pavement : pavements without transverse steel.

    DOT National Transportation Integrated Search

    1972-01-01

    The status of studies of the three continuously reinforced pavement projects near Charlottesville is reported. Of particular interest in these studies are the effects of the elimination of transverse reinforcing steel, the changing characteristics of...

  4. Classification of Features of Pavement Profiles Using Empirical Mode Decomposition

    DOT National Transportation Integrated Search

    2014-12-01

    The Long-Term Pavement Performance (LTPP) database contains surface profile data for numerous pavements that are used mainly for computing International Roughness Index (IRI).(2) In order to obtain more information from these surface profiles, a Hilb...

  5. Evaluation of concrete pavements with materials-related distress : appendix A, part 1.

    DOT National Transportation Integrated Search

    2010-03-02

    An evaluation of cores sampled from six concrete pavements was performed. Factors contributing to pavement distress observed in the field were determined, including expansive alkali-silica reactivity and freeze-thaw deterioration related to poor entr...

  6. Evaluation of concrete pavements with materials-related distress : appendix A, part 3.

    DOT National Transportation Integrated Search

    2010-03-02

    An evaluation of cores sampled from six concrete pavements was performed. Factors contributing to pavement distress observed in the field were determined, including expansive alkali-silica reactivity and freeze-thaw deterioration related to poor entr...

  7. Evaluation of concrete pavements with materials-related distress : appendix A, part 2.

    DOT National Transportation Integrated Search

    2010-03-02

    An evaluation of cores sampled from six concrete pavements was performed. Factors contributing to pavement distress observed in the field were determined, including expansive alkali-silica reactivity and freeze-thaw deterioration related to poor entr...

  8. Implementation and thickness optimization of perpetual pavements in Ohio.

    DOT National Transportation Integrated Search

    2015-06-01

    This report documents the performance of perpetual pavement structures constructed by the Ohio Department of Transportation. : Three perpetual pavement test sections on U.S. Route 23 in Delaware, Ohio (DEL-23) were constructed with AC thicknesses 11 ...

  9. Flexible and composite structures for premium pavements. Volume 2, Design manual

    DOT National Transportation Integrated Search

    1980-11-01

    This design manual presents the results of a detailed study to identify and design flexible and composite pavement configurations which will perform as premium or "zero-maintenance" pavements. This manual includes identification and classification of...

  10. Engineering and management experience at Texas A&M Transportation Institute

    NASA Astrophysics Data System (ADS)

    Chowdhury, Arif Tahjibul

    This manuscript presents the author's engineering and management experience during his internship in the Materials and Pavements (M&P) Division at the Texas A&M Transportation Institute (TTI), and is a record of study for the Doctor of Engineering at Texas A&M University. Through this internship, he met his established internship objectives of gaining technical knowledge as well as knowledge and skills in project management, organizational communication, and quality management of pavement condition data, and of attaining professional development. In meeting these objectives, the author describes the history, mission, and organizational structure of his workplace. He also presents his experience of developing and delivering a two-week training course on pavement design and construction in Kosovo. Participating in a number of professional development training courses and other activities prepared him for working as an engineering manager. These activities include Delta-T leadership training, an instructor development course, a time management and organizational skills course, and the M&P Division lecture series. Leadership and skills learned through the Delta-T program were beneficial for the employee as well as the employer. For the class project, the author and his teammates performed a study dealing with improving TTI's deliverables. The Delta-T team composed a report summarizing their efforts of examining the current state of TTI's project deliverables, the deliverables' shortcomings, and potential enhancements to expand the deliverables' appeal to additional types of potential users outside the traditional research community. The team also developed a prototype web-based model of deliverables and presented some implementation recommendations. Participating in the Texas Department of Transportation's (TxDOT's) pavement surface distress data collection program enabled the author to become familiar with pavement distress data quality management and thus attain the technical and nontechnical skills required for project management. He noticed some areas for improvement in TxDOT's rater's manual, rater's training class, and acceptance criteria for visual distress data.

  11. Structural Analysis Computer Programs for Rigid Multicomponent Pavement Structures with Discontinuities--WESLIQID and WESLAYER. Report 1. Program Development and Numerical Presentations.

    DTIC Science & Technology

    1981-05-01

    represented as a Winkler foundation. The program can treat any number of slabs connected by steel bars or other load trans- fer devices at the joints...dimensional finite element method. The inherent flexibility of such an approach permits the analysis of a rigid pavement with steel bars and stabilized...layers and provides an efficient tool for analyzing stress conditions at the joint. Unfor- tunately, such a procedure would require a tremendously

  12. Evaluation of Geosynthetic-Reinforced Flexible Pavements using Static Plate Load Tests

    DOT National Transportation Integrated Search

    2010-01-01

    This study focuses on the response of full-scale geogrid-reinforced flexible pavements to static surface loading. Specifically, static plate load (SPL) tests were performed on a low-volume, asphalt pavement frontage road in Eastern Arkansas, USA (the...

  13. Texas flexible pavements and overlays : data analysis plans and reporting format.

    DOT National Transportation Integrated Search

    2012-01-01

    This five-year project was initiated to collect materials and pavement performance data on a minimum of 100 : highway test sections around the State of Texas, incorporating flexible pavements and overlays. Besides being used to : calibrate and valida...

  14. Developing a GDOT pavement marking handbook using field test deck evaluation and long-term performance analysis : final report.

    DOT National Transportation Integrated Search

    2015-12-01

    This research project comprehensively reviewed the state departments of transportations (DOTs) practices on : selecting and inspecting pavement marking materials (PMMs) and evaluated pavement marking : retroreflectivity data collected on the Georg...

  15. Exploration of Machine Learning Approaches to Predict Pavement Performance

    DOT National Transportation Integrated Search

    2018-03-23

    Machine learning (ML) techniques were used to model and predict pavement condition index (PCI) for various pavement types using a variety of input variables. The primary objective of this research was to develop and assess PCI predictive models for t...

  16. Long-term Metal Performance of Three Permeable Pavements

    EPA Science Inventory

    EPA constructed a 4,000-m2 parking lot surfaced with three permeable pavements (permeable interlocking concrete pavers, pervious concrete, and porous asphalt) on the Edison Environmental Center in Edison, NJ in 2009. Samples from each permeable pavement infiltrate were collected...

  17. Preliminary evaluation and analysis of LTPP faulting data : final report.

    DOT National Transportation Integrated Search

    2000-09-01

    A major goal of the Long-Term Pavement Performance (LTPP) study is the development of recommendations for improving the design and construction of new and rehabilitated pavements to provide longer lasting pavements. As part of the condition monitorin...

  18. High performance concrete pavement in Indiana : [technical summary].

    DOT National Transportation Integrated Search

    2011-01-01

    Until the early 1990s, curling and warping of Portland cement concrete pavement did not concern pavement engineers in many transportation agencies. Since beginning construction of the interstate system in the United States in the late 1950s through t...

  19. Nontraditional Fog Seal for Asphalt Pavement : Performance on Shoulder Sections in Minnesota

    DOT National Transportation Integrated Search

    2018-05-01

    The pavement engineering community has recently been introduced to a number of nontraditional products intended for uses as surface sealers for bituminous pavements. Many new products use agricultural-based components and little is known regarding th...

  20. Investigation of Dynamic Modulus and Flow Number Properties of Asphalt Mixtures In Washington State

    DOT National Transportation Integrated Search

    2011-11-11

    Pavement design is now moving toward more mechanistic based design methodologies for the purpose of producing long : lasting and higher performance pavements in a cost-effective manner. The recent Mechanistic-Empirical pavement : design guide (MEPDG)...

  1. An Efficient and Accurate Genetic Algorithm for Backcalculation of Flexible Pavement Layer Moduli : Executive Summary Report

    DOT National Transportation Integrated Search

    2012-12-01

    Backcalculation of pavement moduli has been an intensively researched subject for more than four decades. Despite the existence of many backcalculation programs employing different backcalculation procedures and algorithms, accurate inverse of the la...

  2. Quantitative analysis of microtubule orientation in interdigitated leaf pavement cells.

    PubMed

    Akita, Kae; Higaki, Takumi; Kutsuna, Natsumaro; Hasezawa, Seiichiro

    2015-01-01

    Leaf pavement cells are shaped like a jigsaw puzzle in most dicotyledon species. Molecular genetic studies have identified several genes required for pavement cells morphogenesis and proposed that microtubules play crucial roles in the interdigitation of pavement cells. In this study, we performed quantitative analysis of cortical microtubule orientation in leaf pavement cells in Arabidopsis thaliana. We captured confocal images of cortical microtubules in cotyledon leaf epidermis expressing GFP-tubulinβ and quantitatively evaluated the microtubule orientations relative to the pavement cell growth axis using original image processing techniques. Our results showed that microtubules kept parallel orientations to the growth axis during pavement cell growth. In addition, we showed that immersion treatment of seed cotyledons in solutions containing tubulin polymerization and depolymerization inhibitors decreased pavement cell complexity. Treatment with oryzalin and colchicine inhibited the symmetric division of guard mother cells.

  3. Evaluation of moisture sensitivity properties of ADOT mixtures on US 93 : final report.

    DOT National Transportation Integrated Search

    2001-11-01

    In 1993, the Arizona Department of Transportation (ADOT) constructed pavement test sections as part of the Long : Term Pavement Performance (LTPP) Specific Pavement Studies (SPS). The test sections are located on US 93 north : of Kingman, Arizona, an...

  4. Effectiveness of crack sealing on pavement serviceability and life : executive summary report.

    DOT National Transportation Integrated Search

    2011-06-01

    Sealing of cracks in asphalt surfaced pavements has long been one of the widely practiced pavement maintenance strategies by the highway agencies in including Ohio Department of Transportation. Crack sealing is performed with intent to reduce water i...

  5. Towards an integrated pavement design approach : using HWTD to support the MEPDG

    DOT National Transportation Integrated Search

    2010-11-01

    Variability of hot-mix asphalt (HMA) production can have drastic effects on pavement performance. A poor : gradation or an inappropriate amount of asphalt binder could lead to early distresses and shorter pavement life. Other : factors, such as the a...

  6. Calibration of the AASHTO pavement design guide to South Carolina conditions - phase I : final report.

    DOT National Transportation Integrated Search

    2016-07-20

    The primary objective of this research was to identify existing historical data (i.e., climate, traffic, : pavement design information, material properties, and pavement performance) within the SCDOT for use : in the local calibration of the Mechanis...

  7. Evaluation of the Long-Term Durability of Joints Cut Using Early Entry Saws on Rigid Pavements

    DOT National Transportation Integrated Search

    2011-01-01

    Early-entry sawing is an attractive operation to expedite the construction of jointed concrete pavements; however, : there are some concerns that the early-entry sawing may compromise the pavements long-term performance. The Illinois : Department ...

  8. Modeling the Hydrologic Processes of a Permeable Pavement System

    EPA Science Inventory

    A permeable pavement system can capture stormwater to reduce runoff volume and flow rate, improve onsite groundwater recharge, and enhance pollutant controls within the site. A new unit process model for evaluating the hydrologic performance of a permeable pavement system has be...

  9. Performance of a porous pavement system on the Maine Mall Road in South Portland.

    DOT National Transportation Integrated Search

    2010-12-01

    Porous pavements have been successfully used by developers since the mid-70s as a means to make : traditional impervious facilities, such as parking lots, handle storm water in a more environmentally : friendly way. Traditional pavement materials ...

  10. Chip seal performance measures : best practices.

    DOT National Transportation Integrated Search

    2015-03-01

    The Washington State Department of Transportation (WSDOT) has a long history of designing, constructing, : and maintaining chip seal or bituminous surface treatment pavements. However, to date WSDOT has not : developed pavement performance indicators...

  11. Laboratory characterization of materials & data management for Ohio-SHRP Projects (U.S. 23).

    DOT National Transportation Integrated Search

    2002-01-01

    About a decade ago, the Federal Highway administration (FHWA) set up a national study called the Long-Term Pavement perfromance (LTTP) under the Stretegic Highway Research program (SHRP) to extend pavement life through investigation of different pave...

  12. Investigation of the Asphalt Pavement Analyzer (APA) testing program in Nebraska.

    DOT National Transportation Integrated Search

    2008-03-01

    The asphalt pavement analyzer (APA) has been widely used to evaluate hot-mix asphalt (HMA) rutting potential in mix : design and quality control-quality assurance (QC-QA) applications, because the APA testing and its data analyses are : relatively si...

  13. Materials and Procedures for Sealing and Filling Cracks in Asphalt-Surfaced Pavements : Manual of Practice (Update)

    DOT National Transportation Integrated Search

    1999-06-01

    The Strategic Highway Research Program (SHRP) H-106 maintenance experiment and the Federal Highway Administration (FHWA) Long-Term Monitoring (LTM) of Pavement Maintenance Materials Test Sites project studied the treatment (sealing and filling) of cr...

  14. MoDOT pavement preservation research program volume V, site-specific pavement condition assessment.

    DOT National Transportation Integrated Search

    2015-11-01

    The overall objective of Task 4 was to thoroughly assess the cost-effectiveness and utility of selected non-invasive technologies as : applicable to MoDOT roadways. Non-invasive imaging technologies investigated in this project were Ultrasonic Surfac...

  15. Investigating the feasibility of integrating pavement friction and texture depth data in modeling for INDOT PMS.

    DOT National Transportation Integrated Search

    2012-11-01

    Under INDOTs current friction testing program, the friction is measured annually on interstates but only once every three years on noninterstate : roadways. The states Pavement Management System, however, would require current data if friction ...

  16. Materials and Procedures for Repair of Potholes in Asphalt-Surfaced Pavements : Manual of Practice (Updated)

    DOT National Transportation Integrated Search

    1999-12-01

    The Strategic Highway Research Program (SHRP) H-106 maintenance experiment and the Federal Highway Administration (FHWA) Long-Term Monitoring (LTM) of Pavement Maintenance Materials Test Sites project studied the repair of potholes in asphalt-surface...

  17. Common Characteristics of Good and Poorly Performing PCC Pavements

    DOT National Transportation Integrated Search

    1998-01-01

    This report documents the analysis and findings of a study to identify the site conditions and design/construction features of concrete pavements (JPCP, JRCP, CRCP) that lead to good performance and those that lead to poor performance. Data from Long...

  18. Common Characteristics of Good and Poorly Performing AC Pavements

    DOT National Transportation Integrated Search

    1999-12-01

    This report documents the analysis and findings of a study to identify the site conditions and design/construction features of : flexible pavements that lead to good performance and those that lead to poor performance. Data from the Long Term Pavemen...

  19. Warm mix asphalt : final report.

    DOT National Transportation Integrated Search

    2014-11-01

    The performance of pavements constructed using warm mix asphalt (WMA) technology were : compared to the performance of conventional hot mix asphalt (HMA) pavements placed on the : same project. Measurements of friction resistance, rutting/wear, ride ...

  20. Indirect diagnosis of pavement structural damages using surface GPR reflection techniques

    NASA Astrophysics Data System (ADS)

    Benedetto, A.; Pensa, S.

    2007-06-01

    The safety and operability of road networks is, in part, dependent on the quality of the pavement. It is known that pavements suffer from many different structural problems which can lead to damage to the pavement surface. To minimize the effect of these problems programmed policies for pavement management are required. Additionally a given local anomaly on the road surface can affect the safety of the road to various degrees according to the category of the road, so it is possible to set up different programmes of repair according to the different standards of road. Programmed policies for pavement management are required because of the wide structural damage which occurs to pavements during their normal operating life. This has consequences for the safety and operability of road networks. During the last decade, road networks suffered from great structural damage. The damage occurs for different reasons, such as the increasing traffic or the lack of means for routine maintenance. Many forms of damage, originating in the bottom layers are invisible until the pavement cracks. They depend on the infiltration of water and the presence of cohesive soil greatly reduces the bearing capacity of the sub-asphalt layers and underlying soils. On the basis of an in-depth literature review, an experimental survey with Ground Penetrating Radar (GPR) was carried out to calibrate the geophysical parameters and to validate the reliability of an indirect diagnostic method of pavement damage. The experiments were set on a pavement under which water was injected over a period of several hours. GPR travel time data were used to estimate the dielectric constant and the water content in the unbound aggregate layer, the variations in water content with time and particular areas where rate of infiltration decreases. A new methodology has been proposed to extract the hydraulic permittivity fields in sub-asphalt structural layers and soils from the moisture maps observed with GPR. It is effective at diagnosing the presence of clay or cohesive soil that compromises the bearing capacity of sub-base and induces damage.

  1. Extending the life of asphalt pavements (OR09-086A) : part I final report.

    DOT National Transportation Integrated Search

    2011-01-01

    The goal of this project was to identify common features of good and poorly performing asphalt pavements. The types of asphalt pavements included in the study were grouped into four categories: new construction, crush & shape with HMA surface, mill &...

  2. Texas flexible pavements and overlays : calibration plans for M-E models and related software.

    DOT National Transportation Integrated Search

    2013-06-01

    This five-year project was initiated to collect materials and pavement performance data on a minimum of 100 highway test sections around the State of Texas, incorporating flexible pavements and overlays. Besides being used to calibrate and validate m...

  3. Study of LTPP laboratory resilient modulus test data and response characteristics.

    DOT National Transportation Integrated Search

    2002-10-01

    The resilient modulus of every unbound structural layer of the Long Term Pavement Performance (LTPP) Specific Pavement and : General Pavement Studies Test Sections is being measured in the laboratory using LTPP test protocol P46. A total of 2,014 : r...

  4. 76 FR 5510 - Safety Enhancements Part 139, Certification of Airports

    Federal Register 2010, 2011, 2012, 2013, 2014

    2011-02-01

    ... prevent accidents and incidents in that area. A certificate holder would be required to conduct pavement... Pavement Surface Evaluation Braking performance is critical for all aircraft especially on wet runway surfaces. Under certain conditions, hydroplaning or unacceptable loss of traction (tire/pavement contact...

  5. Inclusion of LCCA in Alaska flexible pavement design software manual.

    DOT National Transportation Integrated Search

    2012-10-01

    Life cycle cost analysis is a key part for selecting materials and techniques that optimize the service life of a pavement in terms of cost and performance. While the Alaska : Flexible Pavement Design software has been in use since 2004, there is no ...

  6. Evaluation of Surface and Subsurface Processes in Permeable Pavement Infiltration Trenches

    EPA Science Inventory

    The hydrologic performance of permeable pavement systems can be affected by clogging of the pavement surface and/or clogging at the interface where the subsurface storage layer meets the underlying soil. As infiltration and exfiltration are the primary functional mechanisms for ...

  7. Modeling of Mn/Road test sections with the CRREL mechanistic pavement design procedure

    DOT National Transportation Integrated Search

    1996-09-01

    The U.S. Army Cold Regions Research and Engineering Laboratory is developing a mechanistic pavement design procedure for use in seasonal frost areas. The procedure was used to predict pavement performance of some test sections under construction at t...

  8. Finite element simulation of structural performance on flexible pavements with stabilized base/treated subbase materials under accelerated loading.

    DOT National Transportation Integrated Search

    2011-12-01

    Accelerated pavement testing (APT) has been increasingly used by state highway agencies in recent years for evaluating pavement structures and/or materials. However, running an APT experiment is expensive. It requires costly accelerated loading devic...

  9. Evaluation of long-term pavement performance and noise characteristics of open-graded friction courses : project 3.

    DOT National Transportation Integrated Search

    2010-06-01

    This experimental project is being conducted as a part of WSDOTs effort to produce pavements that reduce the noise : generated at the tire/pavement interface. Experimental sections of open-graded friction courses were built using asphalt rubber : ...

  10. Evaluation of long-term pavement performance and noise characteristics of open-graded friction courses : project 2.

    DOT National Transportation Integrated Search

    2012-06-01

    This report describes the second of three experimental installations of open-graded friction course (OGFC) quieter pavements designed to reduce the noise generated at the tire/pavement interface. Experimental sections of OGFC were built using a...

  11. Verification of the enhanced integrated climatic module soil subgrade input parameters in the MEPDG.

    DOT National Transportation Integrated Search

    2015-10-01

    At the beginning of 2009, INDOT adopted the Mechanistic-Empirical Pavement Design Guide (MEPDG) method to study the tong-term : pavement performance. The implementation of this new design approach led to difficulties for the pavement to pass the INDO...

  12. Analysis of Load Stress for Asphalt Pavement of Lean Concrete Base

    NASA Astrophysics Data System (ADS)

    Lijun, Suo; Xinwu, Wang

    The study revealed that whether it is early distresses in asphalt pavement or not depends largely on working performance of base. In the field of asphalt pavement, it is widely accepted that lean concrete base, compared with the general semi-rigid base, has better working performance, such as high strength and good eroding resistance. Problem of early distresses in asphalt pavement, which caused by more traffic loadings, can be settled effectively when lean concrete is used in asphalt pavement. Traffic loading is important parameter used in the analysis of the new pavement design. However, few studies have done extensive and intensive research on the load stress for asphalt pavement of lean concrete base. Because of that, it is necessary to study the load stress for the asphalt pavement. In the paper, first of all, three-dimension finite element model of the asphalt pavement is created for the aim of doing mechanical analysis for the asphalt pavement. And then, the two main objectives of this study are investigated. One is analysis for load stress of lean concrete base, and the other is analysis for load stress of asphalt surface. The results show that load stress of lean concrete base decreases, decrease and increase with increase of base's thickness, surface's thickness and ratio of base's modulus to foundation's modulus respectively. So far as the asphalt surface is concerned, maximum shearing stress, which is caused by load, is evident in asphalt surface which is located in transverse contraction joint of lean concrete base of asphalt pavement. Maximum shearing stress decrease, decrease, decrease and increase respectively with increase of the surface's modulus, the surface's thickness, base's thickness and ratio of base's modulus to foundation's modulus.

  13. Quantitative analysis of microtubule orientation in interdigitated leaf pavement cells

    PubMed Central

    Akita, Kae; Higaki, Takumi; Kutsuna, Natsumaro; Hasezawa, Seiichiro

    2015-01-01

    Leaf pavement cells are shaped like a jigsaw puzzle in most dicotyledon species. Molecular genetic studies have identified several genes required for pavement cells morphogenesis and proposed that microtubules play crucial roles in the interdigitation of pavement cells. In this study, we performed quantitative analysis of cortical microtubule orientation in leaf pavement cells in Arabidopsis thaliana. We captured confocal images of cortical microtubules in cotyledon leaf epidermis expressing GFP-tubulinβ and quantitatively evaluated the microtubule orientations relative to the pavement cell growth axis using original image processing techniques. Our results showed that microtubules kept parallel orientations to the growth axis during pavement cell growth. In addition, we showed that immersion treatment of seed cotyledons in solutions containing tubulin polymerization and depolymerization inhibitors decreased pavement cell complexity. Treatment with oryzalin and colchicine inhibited the symmetric division of guard mother cells. PMID:26039484

  14. Assessment of low temperature cracking in asphalt pavement mixes and rheological performance of asphalt binders

    NASA Astrophysics Data System (ADS)

    Sowah-Kuma, David

    Government spends a lot of money on the reconstruction and rehabilitation of road pavements in any given year due to various distresses and eventual failure. Low temperature (thermal) cracking, one of the main types of pavement distress, contributes partly to this economic loss, and comes about as a result of accumulated tensile strains exceeding the threshold tensile strain capacity of the pavement. This pavement distress leads to a drastic reduction of the pavement's service life and performance. In this study, the severity of low temperature (thermal) cracking on road pavements selected across the Province of Ontario and its predicted time to failure was assessed using the AASTHO Mechanistic-Empirical Pavement Design Guide (MEPDG) and AASHTOWARE(TM) software, with inputs such as creep compliance and tensile strength from laboratory test. Highway 400, K1, K2, Y1, Sasobit, Rediset LQ, and Rediset WMX were predicted to have a pavement in-service life above 15 years. Additionally, the rheological performance of the recovered asphalt binders was assessed using Superpave(TM) tests such as the dynamic shear rheometer (DSR) and bending beam rheometer (BBR). Further tests using modified standard protocols such as the extended bending beam rheometer (eBBR) (LS-308) test method and double-edge notched tension (DENT) test (LS-299) were employed to evaluate the failure properties associated with in service performance. The various rheological tests showed K1 to be the least susceptible to low temperature cracking compared to the remaining samples whiles Highway 24 will be highly susceptible to low temperature cracking. X-ray fluorescence (XRF) analysis was performed on the recovered asphalt binders to determine the presence of metals such as zinc (Zn) and molybdenum (Mo) believed to originate from waste engine oil, which is often added to asphalt binders. Finally, the severity of oxidative aging (hardening) of the recovered asphalt binders was also evaluated using the Fourier transform infrared (FTIR) spectroscopy to determine the abundance of functional groups such as the carbonyl (CO) and sulfoxide (SO). Functional groups such as styrene and butadiene were also evaluated to determine the polymer modifier content in recovered asphalt binders.

  15. Long-Term Pavement Performance Bind Online [Product Brief

    DOT National Transportation Integrated Search

    2017-02-23

    This Product Brief introduces the reader to the Long-Term Pavement Performance Bind (LTPPBind) Online Web-based tool for selecting asphalt binder performance grades (PGs).(1) It explains what the tool is, who can benefit from its use, what its main f...

  16. Use of the asphalt pavement analyzer to study in-service asphalt mixture performance.

    DOT National Transportation Integrated Search

    2004-12-30

    Permanent deformation or rutting is a major hot mix asphalt (HMA) performance distress. Implementation of the : Superior Performing Asphalt Pavement (Superpave) HMA mix design system was due, in part, to limit HMA rutting. : Along with the Superpave ...

  17. Use of the Asphalt Pavement Analyzer to study in-service asphalt mixture performance

    DOT National Transportation Integrated Search

    2004-12-30

    Permanent deformation or rutting is a major hot mix asphalt (HMA) performance distress. Implementation of the Superior Performing Asphalt Pavement (Superpave) HMA mix design system was due, in part, to limit HMA rutting. Along with the Superpave syst...

  18. Utilize Cementitious High Carbon Fly Ash (CHCFA) to Stabilize Cold In-Place Recycled (CIR) Asphalt Pavement as Base Coarse

    DOE Office of Scientific and Technical Information (OSTI.GOV)

    Wen, Haifang; Li, Xiaojun; Edil, Tuncer

    The purpose of this study was to evaluate the performance of cementitious high carbon fly ash (CHCFA) stabilized recycled asphalt pavement as a base course material in a real world setting. Three test road cells were built at MnROAD facility in Minnesota. These cells have the same asphalt surface layers, subbases, and subgrades, but three different base courses: conventional crushed aggregates, untreated recycled pavement materials (RPM), and CHCFA stabilized RPM materials. During and after the construction of the three cells, laboratory and field tests were carried out to characterize the material properties. The test results were used in the mechanistic-empiricalmore » pavement design guide (MEPDG) to predict the pavement performance. Based on the performance prediction, the life cycle analyses of cost, energy consumption, and greenhouse gasses were performed. The leaching impacts of these three types of base materials were compared. The laboratory and field tests showed that fly ash stabilized RPM had higher modulus than crushed aggregate and RPM did. Based on the MEPDG performance prediction, the service life of the Cell 79 containing fly ash stabilized RPM, is 23.5 years, which is about twice the service life (11 years) of the Cell 77 with RPM base, and about three times the service life (7.5 years) of the Cell 78 with crushed aggregate base. The life cycle analysis indicated that the usage of the fly ash stabilized RPM as the base of the flexible pavement can significantly reduce the life cycle cost, the energy consumption, the greenhouse gases emission. Concentrations of many trace elements, particularly those with relatively low water quality standards, diminish over time as water flows through the pavement profile. For many elements, concentrations below US water drinking water quality standards are attained at the bottom of the pavement profile within 2-4 pore volumes of flow.« less

  19. Consideration of regional variations in climatic and soil conditions in the modified triaxial design method.

    DOT National Transportation Integrated Search

    2008-11-01

    The Texas Department of Transportation (TxDOT) uses the modified triaxial design procedure to check : pavement designs from the flexible pavement system program. Since its original development more than : 50 years ago, little modification has been ma...

  20. Traffic load spectra for implementing and using the mechanistic-empirical pavement design guide in Georgia.

    DOT National Transportation Integrated Search

    2014-02-01

    The GDOT is preparing for implementation of the Mechanistic-Empirical Pavement Design : Guide (MEPDG). As part of this preparation, a statewide traffic load spectra program is being : developed for gathering truck axle loading data. This final report...

  1. Materials and Procedures for Rapid Repair of Partial-Depth Spalls in Concrete Pavements : Manual of Practice (Update)

    DOT National Transportation Integrated Search

    1999-12-01

    The Strategic Highway Research Program (SHRP) H-106 maintenance experiment and the Federal Highway Administration (FHWA) Long-Term Monitoring (LTM) of Pavement Maintenance Materials Test Sites project studied the repair of partial depth spalls in con...

  2. Open friction courses on an asphaltic concrete base: A seven-year progress report

    NASA Astrophysics Data System (ADS)

    Dodge, K. S.

    1982-10-01

    The performance of two open-friction courses (OFC) having 1/2 in. and 1/4 in. maximum-sized aggregates - and their adjacent conventional New York State 1A top-course (control) is documented over the final 4 years of their 7-year design lives. The pavements were evaluated by analysis of mix properties and surface performance. The physical properties examined by means of extracted pavement cores were aggregate gradation, binder penetration and viscosities, and void content. Testing of frictional performance, rut depths, microtecture and macrotexture, rideability, and cracking were used to evaluate the pavement's surface performance.

  3. Evaluation Model for Pavement Surface Distress on 3d Point Clouds from Mobile Mapping System

    NASA Astrophysics Data System (ADS)

    Aoki, K.; Yamamoto, K.; Shimamura, H.

    2012-07-01

    This paper proposes a methodology to evaluate the pavement surface distress for maintenance planning of road pavement using 3D point clouds from Mobile Mapping System (MMS). The issue on maintenance planning of road pavement requires scheduled rehabilitation activities for damaged pavement sections to keep high level of services. The importance of this performance-based infrastructure asset management on actual inspection data is globally recognized. Inspection methodology of road pavement surface, a semi-automatic measurement system utilizing inspection vehicles for measuring surface deterioration indexes, such as cracking, rutting and IRI, have already been introduced and capable of continuously archiving the pavement performance data. However, any scheduled inspection using automatic measurement vehicle needs much cost according to the instruments' specification or inspection interval. Therefore, implementation of road maintenance work, especially for the local government, is difficult considering costeffectiveness. Based on this background, in this research, the methodologies for a simplified evaluation for pavement surface and assessment of damaged pavement section are proposed using 3D point clouds data to build urban 3D modelling. The simplified evaluation results of road surface were able to provide useful information for road administrator to find out the pavement section for a detailed examination and for an immediate repair work. In particular, the regularity of enumeration of 3D point clouds was evaluated using Chow-test and F-test model by extracting the section where the structural change of a coordinate value was remarkably achieved. Finally, the validity of the current methodology was investigated by conducting a case study dealing with the actual inspection data of the local roads.

  4. Effects of Using Silica Fume and Polycarboxylate-Type Superplasticizer on Physical Properties of Cementitious Grout Mixtures for Semiflexible Pavement Surfacing

    PubMed Central

    Karim, Mohamed Rehan; Mahmud, Hilmi; Mashaan, Nuha S.; Katman, Herdayati; Husain, Nadiah Md

    2014-01-01

    Semi-flexible pavement surfacing is a composite pavement that utilizes the porous pavement structure of the flexible bituminous pavement, which is subsequently grouted with appropriate cementitious materials. This study aims to investigate the compressive strength, flexural strength, and workability performance of cementitious grout. The grout mixtures are designed to achieve high strength and maintain flow properties in order to allow the cement slurries to infiltrate easily through unfilled compacted skeletons. A paired-sample t-test was carried out to find out whether water/cement ratio, SP percentages, and use of silica fume influence the cementitious grout performance. The findings showed that the replacement of 5% silica fume with an adequate amount of superplasticizer and water/cement ratio was beneficial in improving the properties of the cementitious grout. PMID:24526911

  5. Effects of using silica fume and polycarboxylate-type superplasticizer on physical properties of cementitious grout mixtures for semiflexible pavement surfacing.

    PubMed

    Koting, Suhana; Karim, Mohamed Rehan; Mahmud, Hilmi; Mashaan, Nuha S; Ibrahim, Mohd Rasdan; Katman, Herdayati; Husain, Nadiah Md

    2014-01-01

    Semi-flexible pavement surfacing is a composite pavement that utilizes the porous pavement structure of the flexible bituminous pavement, which is subsequently grouted with appropriate cementitious materials. This study aims to investigate the compressive strength, flexural strength, and workability performance of cementitious grout. The grout mixtures are designed to achieve high strength and maintain flow properties in order to allow the cement slurries to infiltrate easily through unfilled compacted skeletons. A paired-sample t-test was carried out to find out whether water/cement ratio, SP percentages, and use of silica fume influence the cementitious grout performance. The findings showed that the replacement of 5% silica fume with an adequate amount of superplasticizer and water/cement ratio was beneficial in improving the properties of the cementitious grout.

  6. Performance of Recycled Hot Mix Asphalt Mixtures

    DOT National Transportation Integrated Search

    1995-05-01

    This research project was undertaken to evaluate the performance of recycled pavements in comparison to virgin (control) asphalt pavements. Five projects, each consisting of a recycled section and a control section, were subjected to detailed evaluat...

  7. Performance of reclaimed asphalt pavement on unpaved roads.

    DOT National Transportation Integrated Search

    2011-10-01

    The University of Wyoming's LTAP Center conducted a study examining the performance of reclaimed, recycled asphalt pavement (RAP) on unpaved roads in three Wyoming counties. Fifteen material and dust suppression treatment combinations were examined. ...

  8. Utilizing Lab Tests to Predict Asphalt Concrete Overlay Performance

    DOT National Transportation Integrated Search

    2017-12-01

    A series of five experimental projects and three demonstration projects were constructed to better understand the performance of pavement overlays using various levels of asphalt binder replacement (ABR) from reclaimed asphalt pavement (RAP), recycle...

  9. Microsurfacing in Texas.

    DOT National Transportation Integrated Search

    2012-01-01

    Microsurfacing is a unique pavement preservation tool in the arsenal of maintenance agencies. It is known to : perform well when applied to the right pavement at the right time for the right distress. In order to ensure : microsurfacing performs well...

  10. Interim guide for optimum joint performance of concrete pavements.

    DOT National Transportation Integrated Search

    2011-09-01

    The purpose of this guide is to help practitioners understand how to optimize concrete pavement joint performance through the identification, mitigation, and prevention of joint deterioration. It summarizes current knowledge from research and practic...

  11. Performance of recycled mixtures in state of Georgia.

    DOT National Transportation Integrated Search

    1994-01-01

    The Georgia Department of Transportation (GDOT) has been constructing recycled asphalt pavements routinely for about four years. This research project was undertaken to evaluate the performance of recycled pavements in comparison to virgin (control) ...

  12. Performance of continuously reinforced concrete pavements volume 5 : maintenance and repair of CRC pavements.

    DOT National Transportation Integrated Search

    1998-10-01

    This report is one of a series of reports prepared as part of a recent study sponsored by the Federal Highway Administration (FHWA) aimed at updating the state-of-the-art of the design, construction, maintenance, and rehabiilitation of CRC pavements....

  13. Characterization and development of truck load spectra and growth factors for current and future pavement design practices in Louisiana.

    DOT National Transportation Integrated Search

    2011-07-01

    For pavement design practices, several factors must be considered to ensure good pavement performance over the anticipated life cycle. : Such factors include, but are not limited to, the type of paving materials, traffic loading characteristics, prev...

  14. Effects of loop detector installation on the Portland cement concrete pavement lifespan : case study on I-5.

    DOT National Transportation Integrated Search

    2010-08-01

    The installation of loop detectors in portland cement concrete pavement (PCCP) may shorten affected panel life, thus prematurely worsening the condition of the overall pavement. This study focuses on the performance of those loop embedded panels (LEP...

  15. Development of human factors guidelines for advanced traveler information systems and commercial vehicle operations : literature review

    DOT National Transportation Integrated Search

    2000-09-01

    A major goal of the Long-Term Pavement Performance (LTPP) study is the development of recommendations for improving the design and construction of new and rehabilitated pavements to provide longer lasting pavements. As part of the condition monitorin...

  16. Statistical classification of road pavements using near field vehicle rolling noise measurements.

    PubMed

    Paulo, Joel Preto; Coelho, J L Bento; Figueiredo, Mário A T

    2010-10-01

    Low noise surfaces have been increasingly considered as a viable and cost-effective alternative to acoustical barriers. However, road planners and administrators frequently lack information on the correlation between the type of road surface and the resulting noise emission profile. To address this problem, a method to identify and classify different types of road pavements was developed, whereby near field road noise is analyzed using statistical learning methods. The vehicle rolling sound signal near the tires and close to the road surface was acquired by two microphones in a special arrangement which implements the Close-Proximity method. A set of features, characterizing the properties of the road pavement, was extracted from the corresponding sound profiles. A feature selection method was used to automatically select those that are most relevant in predicting the type of pavement, while reducing the computational cost. A set of different types of road pavement segments were tested and the performance of the classifier was evaluated. Results of pavement classification performed during a road journey are presented on a map, together with geographical data. This procedure leads to a considerable improvement in the quality of road pavement noise data, thereby increasing the accuracy of road traffic noise prediction models.

  17. Assessment of technical condition of concrete pavement by the example of district road

    NASA Astrophysics Data System (ADS)

    Linek, M.; Nita, P.; Żebrowski, W.; Wolka, P.

    2018-05-01

    The article presents the comprehensive assessment of concrete pavement condition. Analyses included the district road located in the swietokrzyskie province, used for 11 years. Comparative analyses were conducted twice. The first analysis was carried out after 9 years of pavement operation, in 2015. In order to assess the extent of pavement degradation, the tests were repeated in 2017. Within the scope of field research, the traffic intensity within the analysed road section was determined. Visual assessment of pavement condition was conducted, according to the guidelines included in SOSN-B. Visual assessment can be extended by ground-penetrating radar measurements which allow to provide comprehensive assessment of the occurred structure changes within its entire thickness and length. The assessment included also performance parameters, i.e. pavement regularity, surface roughness and texture. Extension of test results by the assessment of changes in internal structure of concrete composite and structure observations by means of Scanning Electron Microscope allow for the assessment of parameters of internal structure of hardened concrete. Supplementing the observations of internal structure by means of computed tomography scan provides comprehensive information of possible discontinuities and composite structure. According to the analysis of the obtained results, conclusions concerning the analysed pavement condition were reached. It was determined that the pavement is distinguished by high performance parameters, its condition is good and it does not require any repairs. Maintenance treatment was suggested in order to extend the period of proper operation of the analysed pavement.

  18. Comparative field permeability measurement of permeable pavements using ASTM C1701 and NCAT permeameter methods.

    PubMed

    Li, Hui; Kayhanian, Masoud; Harvey, John T

    2013-03-30

    Fully permeable pavement is gradually gaining support as an alternative best management practice (BMP) for stormwater runoff management. As the use of these pavements increases, a definitive test method is needed to measure hydraulic performance and to evaluate clogging, both for performance studies and for assessment of permeability for construction quality assurance and maintenance needs assessment. Two of the most commonly used permeability measurement tests for porous asphalt and pervious concrete are the National Center for Asphalt Technology (NCAT) permeameter and ASTM C1701, respectively. This study was undertaken to compare measured values for both methods in the field on a variety of permeable pavements used in current practice. The field measurements were performed using six experimental section designs with different permeable pavement surface types including pervious concrete, porous asphalt and permeable interlocking concrete pavers. Multiple measurements were performed at five locations on each pavement test section. The results showed that: (i) silicone gel is a superior sealing material to prevent water leakage compared with conventional plumbing putty; (ii) both methods (NCAT and ASTM) can effectively be used to measure the permeability of all pavement types and the surface material type will not impact the measurement precision; (iii) the permeability values measured with the ASTM method were 50-90% (75% on average) lower than those measured with the NCAT method; (iv) the larger permeameter cylinder diameter used in the ASTM method improved the reliability and reduced the variability of the measured permeability. Copyright © 2013 Elsevier Ltd. All rights reserved.

  19. Improving NMDOT's pavement distress survey methodology and developing correlations between FHWA's HPMS distress data and PMS data.

    DOT National Transportation Integrated Search

    2012-01-01

    The New Mexico Department of Transportation (NMDOT) has a program to collect distress data through visual surveys and uses this information at the network level, together with roughness and rutting data, to calculate its pavement serviceability index...

  20. Field performance monitoring and modeling of instrumented pavement on I-35 in McClain County.

    DOT National Transportation Integrated Search

    2015-04-01

    Phase 1 of this project was conducted to better understand the cause of pavement failure under : actual traffic loading and environmental conditions. A 1,000-ft. long experimental pavement : section was constructed on I-35 in McClain County and was i...

  1. D-cracking field performance of Portland cement concrete pavements containing limestone in Kansas : phase 1 report.

    DOT National Transportation Integrated Search

    2012-05-01

    Premature deterioration of concrete pavement due to D-Cracking has been a problem in Kansas since the 1930s. : Limestone is the major source of coarse aggregate in eastern Kansas where the majority of the concrete pavements are : constructed. D-Crack...

  2. Field verification of KDOT's Superpave mixture properties to be used as inputs in the NCHRP mechanistic-empirical pavement design guide.

    DOT National Transportation Integrated Search

    2009-01-01

    In the MechanisticEmpirical Pavement Design Guide (M-EPDG), prediction of flexible pavement response and performance needs an input of dynamic modulus of hot-mix asphalt (HMA) at all three levels of hierarchical inputs. This study was intended to ...

  3. Simplified Techniques for Evaluation and Interpretation of Pavement Deflections for Network-level Analysis : Guide for Assessment of Pavement Structure Performance for PMS Applications

    DOT National Transportation Integrated Search

    2012-06-01

    The objective of this study was to develop an approach for incorporating techniques to interpret and evaluate deflection : data for network-level pavement management system (PMS) applications. The first part of this research focused on : identifying ...

  4. Guidelines for detection, analysis, and treatment of materials-related distress in concrete pavements. Volume 2, Guidelines description and use

    DOT National Transportation Integrated Search

    2002-08-01

    The performance of concrete pavements can be adversely affected by the concrete's inability to resist the environment in which it is placed. This lack of durability can occur even when the structural design of the pavement is adequate. The distresses...

  5. Accelerated testing for studying pavement design and performance (FY 2004) : thin bonded rigid overlay on PCCP and HMA (CISL experiment no. 13).

    DOT National Transportation Integrated Search

    2009-03-01

    The thirteenth full-scale Accelerated Pavement Test (APT) experiment at the Civil Infrastructure Laboratory (CISL) : of Kansas State University aimed to determine the response and the failure mode of thin concrete overlays. Four : pavement structures...

  6. Texas flexible pavements and overlays : year 1 report, test sections, data collection, analyses, and data storage system.

    DOT National Transportation Integrated Search

    2012-06-01

    This five-year project was initiated to collect materials and pavement performance data on a minimum of 100 highway test sections around the State of Texas, incorporating both flexible pavements and overlays. Besides being used to calibrate and valid...

  7. Texas flexible pavements and overlays : interim report for phases 2 and 3 - data collection and model calibration.

    DOT National Transportation Integrated Search

    2017-05-01

    This five-year project was initiated to collect materials and pavement performance data on a minimum of 100 : highway test sections around the state of Texas, incorporating both flexible pavements and overlays. Besides : being used to calibrate and v...

  8. D-cracking field performance of portland cement concrete pavements containing limestone in Kansas : phase 1 report : technical summary.

    DOT National Transportation Integrated Search

    2012-05-01

    Introduction: Premature deterioration of concrete pavement due to D-cracking has been a problem in Kansas since the 1930s. Limestone is the major source of coarse aggregate in eastern Kansas where the majority of the concrete pavements are constructe...

  9. Long-term pavement performance project laboratory materials testing and handling guide

    DOT National Transportation Integrated Search

    2007-09-01

    The Long Term Pavement Performance (LTPP) Laboratory Material Testing Guide was originally prepared for laboratory material handling and testing of material specimens and samples of asphalt materials, portland cement concrete, aggregates, and soils u...

  10. Evaluation of a thin-bonded Portland cement concrete pavement overlay.

    DOT National Transportation Integrated Search

    1996-01-01

    This report discusses the performance of the Virginia Department of Transportation's first modern rehabilitation project involving a thin-bonded portland cement concrete overlay of an existing jointed concrete pavement. The performance of the rigid o...

  11. Improved prediction models for PCC pavement performance-related specifications

    DOT National Transportation Integrated Search

    2000-01-01

    Performance-related specifications (PRS) for the acceptance of newly constructed jointed plain concrete pavements (JPCP) have been developed over the past decade. The main objectives of this study were to improve the distress and smoothness predictio...

  12. Evaluation of continuously reinforced concrete pavement : final report.

    DOT National Transportation Integrated Search

    1975-02-01

    This report provides a review of the performance and structural characteristic exhibited on five continuously reinforced concrete pavement projects in the State of Louisiana. The performance characteristics were evaluated by means of the Mays Ride Me...

  13. Optimizing construction quality management of pavements using mechanistic performance analysis.

    DOT National Transportation Integrated Search

    2004-08-01

    This report presents a statistical-based algorithm that was developed to reconcile the results from several pavement performance models used in the state of practice with systematic process control techniques. These algorithms identify project-specif...

  14. Recycling Old PCC Pavement - Performance Evaluation of FAI 57 Inlays

    DOT National Transportation Integrated Search

    1993-02-01

    This report details the construction and performance monitoring efforts of two demonstration projects proposed in an experimental features work plan entitled Recycling Old PCC Pavement". The objectives of this experimental feature were to evaluate th...

  15. Automated management for pavement inspection system (AMPIS)

    NASA Astrophysics Data System (ADS)

    Chung, Hung Chi; Girardello, Roberto; Soeller, Tony; Shinozuka, Masanobu

    2003-08-01

    An automated in-situ road surface distress surveying and management system, AMPIS, has been developed on the basis of video images within the framework of GIS software. Video image processing techniques are introduced to acquire, process and analyze the road surface images obtained from a moving vehicle. ArcGIS platform is used to integrate the routines of image processing and spatial analysis in handling the full-scale metropolitan highway surface distress detection and data fusion/management. This makes it possible to present user-friendly interfaces in GIS and to provide efficient visualizations of surveyed results not only for the use of transportation engineers to manage road surveying documentations, data acquisition, analysis and management, but also for financial officials to plan maintenance and repair programs and further evaluate the socio-economic impacts of highway degradation and deterioration. A review performed in this study on fundamental principle of Pavement Management System (PMS) and its implementation indicates that the proposed approach of using GIS concept and its tools for PMS application will reshape PMS into a new information technology-based system providing a convenient and efficient pavement inspection and management.

  16. Performance Prediction Relationships for AM2 Airfield Matting Developed from Full-Scale Accelerated Testing and Laboratory Experimentation

    DTIC Science & Technology

    2018-01-01

    work, the prevailing methods used to predict the performance of AM2 were based on the CBR design procedure for flexible pavements using a small number...suitable for design and evaluation frameworks currently used for airfield pavements and matting systems. DISCLAIMER: The contents of this report...methods used to develop the equivalency curves equated the mat-surfaced area to an equivalent thickness of flexible pavement using the CBR design

  17. State-of-the-art review of the applications of nanotechnology in pavement materials

    NASA Astrophysics Data System (ADS)

    Castillo, Luis, Jr.

    The use of nanotechnology in pavement materials is one main area that shows great promise and has the potential to change commonly used materials. This will develop more effective solutions to achieve the desired performance. The overall objective of this work is to present a state-of-the-art literature review of nano-science-based principles to improve the performance and, ultimately, the life cycle of transportation construction materials. This work will be organized into two different parts. The first part will consist of six sections: applications of nanotechnology in concrete pavements, applications of nanotechnology in asphalt pavement, application of nanotechnology in general soils, cost-benefit analysis, challenges, and trends to the future. In addition, a current practice review was performed from a literature review that included a questionnaire of the knowledge and opinion about nanotechnology, which included students, general contractors, teachers, engineers, and architects. The second part will deal with the advancement of the application of nanotechnology in pavement materials for different developed countries. Because nanotechnology is relatively a young field in pavement materials, limited research has been conducted in North America, Europe, and Asia. A comparison of the advancement of nano-science-based principles, as applied to the performance and life cycle of transportation materials, for the three continents will be carried out in a summarized manner.

  18. Evaluation of the Structural Performance of CTS Rapid Set Concrete Mix

    DTIC Science & Technology

    2016-08-01

    June 2015, research was conducted at the U.S. Army Engineer Research and Development Center (ERDC) in Vicksburg, MS, to develop pavement design curves...using the Department of Defense’s (DoD) rigid pavement design method. Results indicate that the DoD’s rigid pavement design criteria are conservative...1.2 Objective and scope The objective of the research presented in this report was to develop pavement design curves relating CTS Rapid Set

  19. Effectiveness of the steel mesh track in repairing asphalt pavements in Małopolska region

    NASA Astrophysics Data System (ADS)

    Zieliński, P.

    2018-05-01

    The aim of this publication is to present and evaluate the effectiveness of the steel mesh track during reconstruction of the pavement on national roads in Małopolska. The paper presents the condition of the pavement before reconstruction, applied design solutions and the current state after 6-10 years of operation. To assess the effectiveness of pavement reinforcement, the results of central deflection tests using the FWD apparatus before and a few years after the reconstruction were compared, it was found that the reinforcement effect was achieved, what has been demonstrated by means of significance analysis of differences in Statgraphics program. Additionally the analyses were extended with parameters characterizing the FWD deflection basin. For selected parameters the values of tensile strains at the bottom of asphalt layers were determined on the basis of correlations given in literature and then the fatigue life was calculated using the criteria of the USA Asphalt Institute and compared with the results of design calculations. The pavement fatigue life estimated on the basis of FWD measurements is generally greater than the one calculated for the design solutions. The assessment of the influence of the steel mesh track on the bearing capacity of the pavement was carried out indirectly, by comparing the central deflections of the structures measured after the reconstruction, with theoretical deflections calculated using the pavement model in the BISAR program, without taking into account the presence of the steel mesh. In some cases the deflections measured are significantly smaller than the deflections calculated for the model without mesh, which can be explained by the reinforced effect of the steel mesh track, especially for sections with the lowest bearing capacity before reconstruction, and where the steel mesh track is placed in the tension zone of the asphalt layers.

  20. Asphalt pavement surfaces and asphalt mixtures. Transportation research record

    DOE Office of Scientific and Technical Information (OSTI.GOV)

    NONE

    1996-12-31

    The papers in this volume, which deal with asphalt pavement surfaces and asphalt mixtures, should be of interest to state and local construction, design, materials, and research engineers as well as contractors and material producers. The papers in Part 1 include discussions of pavement smoothness specifications and skidding characteristics. The first four papers in Part 2 were submitted in response to a call for papers for a session at the 75th Annual Meeting of the Transportation Research Board on low-temperature properties of hot-mix asphalt. The next eight are on the influence of volumetric and strength properties on the performance ofmore » hot-mix asphalt. In the following three papers, the topics covered are the complex modulus of asphalt concrete, cold in-place asphalt recycling, and polymer modification of asphalt pavements in Ontario. The last two papers were presented in a session on relationship of materials characterization to accelerated pavement performance testing.« less

  1. A review of pavement performance on Virginia's interstate system.

    DOT National Transportation Integrated Search

    1976-01-01

    Extensive studies of over 800 miles of divided interstate pavements constructed prior to July 1, 1975, are reported. The studies included those of performance adequacy and the identification of certain factors which appeared to adversely affect perfo...

  2. Correlation of construction quality criteria with performance of asphaltic concrete pavements : final report.

    DOT National Transportation Integrated Search

    1987-08-01

    This report is concerned with the detemination of the relationship between asphaltic concrete suface course specifications and the level of performance of pavements constructed under these specifications. The relationship was investigated through com...

  3. Performance of TenCate Paving interlayers in asphalt concrete pavements.

    DOT National Transportation Integrated Search

    2017-08-01

    As a continued effort of a previously completed project entitled Performance of TenCate Mirafi PGM-G4 Interlayer-Reinforced Asphalt Pavements in Alaska, this project evaluated two newly modified paving interlayers (TruPave and Mirapave) through...

  4. Investigation of electromagnetic gauges for determining in-place HMA density.

    DOT National Transportation Integrated Search

    2007-05-01

    Density is an important component of hot-mix asphalt (HMA) pavement quality and long-term performance. Insufficient density of an : in-place HMA pavement is the most frequently cited construction-related performance problem. : This study evaluated th...

  5. Pavement marking visibility requirements during wet night conditions.

    DOT National Transportation Integrated Search

    2006-01-01

    This study investigated the performance of pavement markings in wet night conditions. Typically, performance will decrease in wet conditions. The degradation is a result of flooding of the marking optics and a change in the optical media, thereby red...

  6. Safety performance evaluation of converging chevron pavement markings : final report.

    DOT National Transportation Integrated Search

    2014-12-01

    The objectives of this study were (1) to perform a detailed safety analysis of converging chevron : pavement markings, quantifying the potential safety benefits and developing an understanding of the : incident types addressed by the treatment, and (...

  7. Evaluation of performance of asphalt pavements constructed using intelligent compaction techniques.

    DOT National Transportation Integrated Search

    2014-10-01

    The long-term performance of asphalt pavements depends on the quality of the subgrade and : asphalt layers. Intelligent compaction methods continuously monitor the modulus/stiffness of : subgrade and asphalt layers during compaction process and have ...

  8. Evaluating roadway subsurface drainage practices - phase II : [tech transfer summary].

    DOT National Transportation Integrated Search

    2015-04-01

    The presence of subsurface drainage systems (e.g., granular bases or : outlets) is generally believed to be beneficial to the performance of : various pavement types. Well-performing subsurface drainage systems : form an important aspect of pavement ...

  9. DOTD evaluates and integrates pavement management system performance to yield savings : [fact sheet].

    DOT National Transportation Integrated Search

    2015-07-01

    A research study was initiated by the Louisiana Department of Transportation and : Development (DOTD) in conjunction with the Federal Highway Administration : (FHWA) to evaluate the overall performance and e ectiveness of DOTDs : Pavement Manag...

  10. Guidelines for Implementing NCHRP 1-37A M-E Design Procedures in Ohio : Volume 4 -- MEPDG Models Validation & Recalibration

    DOT National Transportation Integrated Search

    2009-11-01

    The development of the Mechanistic-Empirical Pavement Design Guide (MEPDG) under National Cooperative Highway Research Program (NCHRP) projects 1-37A and 1-40D has significantly improved the ability of pavement designers to model and simulate the eff...

  11. 78 FR 47480 - Notice of Funding Availability for the Tribal Transportation Program Safety Funds

    Federal Register 2010, 2011, 2012, 2013, 2014

    2013-08-05

    ... engineering improvement projects include, but are not limited to: Intersection safety improvements; Pavement..., replacement, and other improvement of highway signage and pavement markings, or a project to maintain minimum... Administration entitled `Highway Design Handbook for Older Drivers and Pedestrians'; Truck parking facilities...

  12. Guidelines for Implementing NCHRP 1-37A M-E Design Procedures in Ohio : Volume 2 -- Literature Review

    DOT National Transportation Integrated Search

    2009-11-01

    The development of the Mechanistic-Empirical Pavement Design Guide (MEPDG) under National Cooperative Highway Research Program (NCHRP) projects 1-37A and 1-40D has significantly improved the ability of pavement designers to model and simulate the eff...

  13. Long-term pavement monitoring program : development of pavement monitoring : prepared for alternative development workshop

    DOT National Transportation Integrated Search

    1984-08-01

    Long-term monitoring efforts have been carried on for a number of years at state and national level and have been generally accepted. However, the shape that it takes in the future will depend very largely upon the decisions that are made in this Wor...

  14. Petrographic examination of concrete cores taken from the Ohio strategic highway research program (SHRP) specific pavement studies test road.

    DOT National Transportation Integrated Search

    2003-08-26

    The 3-mile long SHRP pavement project is located on US 23, 25-miles north of Columbus, Ohio, : in Delaware County. Northbound lanes were constructed of portland cement concrete (PCC), : while southbound lanes were constructed of asphalt concrete (AC)...

  15. Performance of pervious pavement parking bays storing rainwater in the north of Spain.

    PubMed

    Gomez-Ullate, E; Bayon, J R; Coupe, S; Castro-Fresno, D

    2010-01-01

    Pervious pavements are drainage techniques that improve urban water management in a sustainable manner. An experimental pervious pavement parking area has been constructed in the north of Spain (Santander), with the aim of harvesting good quality rainwater. Forty-five pervious pavement structures have been designed and constructed to measure stored water quantity and quality simultaneously. Ten of these structures are specifically constructed with different geotextile layers for improving water storage within the pavements. Following the confirmation in previous laboratory experiments that the geotextile influenced on water storage, two different geosynthetics (Inbitex and a One Way evaporation control membrane) and control pervious pavements with no geotextile layers were tested in the field. Weather conditions were monitored in order to find correlations with the water storage within the pervious pavement models tested. During one year of monitoring the three different pervious pavement types tested remained at their maximum storage capacity. The heavy rain events which occurred during the experimental period caused evaporation rates within the pervious pavements to be not significant, but allowed the researchers to observe certain trends in the water storage. Temperature was the most closely correlated weather factor with the level of the water stored within the pervious pavements tested.

  16. Functionality Enhancement of Industrialized Optical Fiber Sensors and System Developed for Full-Scale Pavement Monitoring

    PubMed Central

    Wang, Huaping; Liu, Wanqiu; He, Jianping; Xing, Xiaoying; Cao, Dandan; Gao, Xipeng; Hao, Xiaowei; Cheng, Hongwei; Zhou, Zhi

    2014-01-01

    Pavements always play a predominant role in transportation. Health monitoring of pavements is becoming more and more significant, as frequently suffering from cracks, rutting, and slippage renders them prematurely out of service. Effective and reliable sensing elements are thus in high demand to make prognosis on the mechanical properties and occurrence of damage to pavements. Therefore, in this paper, various types of functionality enhancement of industrialized optical fiber sensors for pavement monitoring are developed, with the corresponding operational principles clarified in theory and the performance double checked by basic experiments. Furthermore, a self-healing optical fiber sensing network system is adopted to accomplish full-scale monitoring of pavements. The application of optical fiber sensors assembly and self-healing network system in pavement has been carried out to validate the feasibility. It has been proved that the research in this article provides a valuable method and meaningful guidance for the integrity monitoring of civil structures, especially pavements. PMID:24854060

  17. Durable high strength cement concrete topping for asphalt roads

    NASA Astrophysics Data System (ADS)

    Vyrozhemskyi, Valerii; Krayushkina, Kateryna; Bidnenko, Nataliia

    2017-09-01

    Work on improving riding qualities of pavements by means of placing a thin cement layer with high roughness and strength properties on the existing asphalt pavement were conducted in Ukraine for the first time. Such pavement is called HPCM (High Performance Cementitious Material). This is a high-strength thin cement-layer pavement of 8-9 mm thickness reinforced with metal or polymer fiber of less than 5 mm length. Increased grip properties are caused by placement of stone material of 3-5 mm fraction on the concrete surface. As a result of the research, the preparation and placement technology of high-strength cement thin-layer pavement reinforced with fiber was developed to improve friction properties of existing asphalt pavements which ensures their roughness and durability. It must be emphasized that HPCM is a fundamentally new type of thin-layer pavement in which a rigid layer of 10 mm thickness is placed on a non-rigid base thereby improving riding qualities of asphalt pavement at any season of a year.

  18. Functionality enhancement of industrialized optical fiber sensors and system developed for full-scale pavement monitoring.

    PubMed

    Wang, Huaping; Liu, Wanqiu; He, Jianping; Xing, Xiaoying; Cao, Dandan; Gao, Xipeng; Hao, Xiaowei; Cheng, Hongwei; Zhou, Zhi

    2014-05-19

    Pavements always play a predominant role in transportation. Health monitoring of pavements is becoming more and more significant, as frequently suffering from cracks, rutting, and slippage renders them prematurely out of service. Effective and reliable sensing elements are thus in high demand to make prognosis on the mechanical properties and occurrence of damage to pavements. Therefore, in this paper, various types of functionality enhancement of industrialized optical fiber sensors for pavement monitoring are developed, with the corresponding operational principles clarified in theory and the performance double checked by basic experiments. Furthermore, a self-healing optical fiber sensing network system is adopted to accomplish full-scale monitoring of pavements. The application of optical fiber sensors assembly and self-healing network system in pavement has been carried out to validate the feasibility. It has been proved that the research in this article provides a valuable method and meaningful guidance for the integrity monitoring of civil structures, especially pavements.

  19. Guidelines for detection, analysis, and treatment of materials-related distress in concrete pavements, volume 3 : case studies using the guidelines.

    DOT National Transportation Integrated Search

    2002-08-01

    The performance of concrete pavements can be adversely affected by the concrete's inability to resist the environment in : which it is placed. This lack of durability can occur even when the structural design of the pavement is adequate. The : distre...

  20. Preparation for implementation of the mechanistic-empirical pavement design guide in Michigan : part 2 - evaluation of rehabilitation fixes (part 1).

    DOT National Transportation Integrated Search

    2013-08-01

    The main objectives of Task 2 of the project were to determine the impact of various input variables on the predicted pavement performance for the selected rehabilitation design alternatives in the MEPDG/DARWin-ME, and to verify the pavement performa...

  1. WMA pavements in Oklahoma : moisture damage and performance issues.

    DOT National Transportation Integrated Search

    2013-08-01

    This study explored the potential effects of using different Warm Mix Asphalt (WMA) technologies on the rut, fatigue and moisture-induced damage potential of WMA pavements. This task was pursued in two levels: (i) performance evaluation of WMA and co...

  2. The development of performance prediction models for Virginia's interstate highway system.

    DOT National Transportation Integrated Search

    1995-01-01

    Performance prediction models are a key component of any well-designed pavement management system. In this study, data compiled from the condition surveys conducted annually on Virginia's pavement network were used to develop prediction models for mo...

  3. Long-term pavement performance information management system : pavement performance database user reference guide

    DOT National Transportation Integrated Search

    1995-02-01

    This paper (1) summarizes the most relevant current experience and practice regarding permits (provisions, administrative requirements) and highway use pricing mechanisms (use taxes, permit fees, tolls) of importance for truck size and weight (TS&W) ...

  4. Collection of materials and performance data for Texas flexible pavements and overlays : project summary.

    DOT National Transportation Integrated Search

    2015-08-31

    Proper calibration of mechanistic-empirical : (M-E) design and rehabilitation performance : models to meet Texas conditions is essential : for cost-effective flexible pavement designs. : Such a calibration effort would require a : reliable source of ...

  5. Assessing Green Infrastructure Performance Using Remote Hydologic Monitoring Measures

    EPA Science Inventory

    Two locations in Cincinnati were instrumented with level sensing technologies to measure stormwater flow in porous pavement and bioretention areas. Results indicate good performance of porous pavement and a cost effective application of technology to measure those flows. Result...

  6. Subbase and subgrade performance investigation and design guidelines for concrete pavement.

    DOT National Transportation Integrated Search

    2012-03-01

    The main issue associated with this research is if cheaper alternatives can be configured for subbase : construction. Subbase layers have certain functions that need to be fulfilled in order to assure adequate pavement : performance. One key aspect i...

  7. Long-term stormwater quantity and quality performance of permeable pavement systems.

    PubMed

    Brattebo, Benjamin O; Booth, Derek B

    2003-11-01

    This study examined the long-term effectiveness of permeable pavement as an alternative to traditional impervious asphalt pavement in a parking area. Four commercially available permeable pavement systems were evaluated after 6 years of daily parking usage for structural durability, ability to infiltrate precipitation, and impacts on infiltrate water quality. All four permeable pavement systems showed no major signs of wear. Virtually all rainwater infiltrated through the permeable pavements, with almost no surface runoff. The infiltrated water had significantly lower levels of copper and zinc than the direct surface runoff from the asphalt area. Motor oil was detected in 89% of samples from the asphalt runoff but not in any water sample infiltrated through the permeable pavement. Neither lead nor diesel fuel were detected in any sample. Infiltrate measured 5 years earlier displayed significantly higher concentrations of zinc and significantly lower concentrations of copper and lead.

  8. Development of a classification method for a crack on a pavement surface images using machine learning

    NASA Astrophysics Data System (ADS)

    Hizukuri, Akiyoshi; Nagata, Takeshi

    2017-03-01

    The purpose of this study is to develop a classification method for a crack on a pavement surface image using machine learning to reduce a maintenance fee. Our database consists of 3500 pavement surface images. This includes 800 crack and 2700 normal pavement surface images. The pavement surface images first are decomposed into several sub-images using a discrete wavelet transform (DWT) decomposition. We then calculate the wavelet sub-band histogram from each several sub-images at each level. The support vector machine (SVM) with computed wavelet sub-band histogram is employed for distinguishing between a crack and normal pavement surface images. The accuracies of the proposed classification method are 85.3% for crack and 84.4% for normal pavement images. The proposed classification method achieved high performance. Therefore, the proposed method would be useful in maintenance inspection.

  9. Objectification of Public Bus Stop's Pavement Surface Morphology

    NASA Astrophysics Data System (ADS)

    Decký, Martin; Kováč, Matúš; Mužík, Juraj; Mičechová, Lenka; Ďuriš, Lukáš

    2018-06-01

    The article deals with the road pavement surface morphology objectification in term of the surface unevenness degradation during the life cycle of bus stop pavements. The article presents the results of long-term rut depth measurements performed during 25 years on selected bus stops which were intended to determine correlation dependences of pavement rut depth on a number of design axles. The article also presents different methods for rut depth measurements including the straightedge test, Profilograph GE, TRIMBLE CX, and dynamic Road Scanner.

  10. The use of reflective and permeable pavements as a potential practice for heat island mitigation and stormwater management

    NASA Astrophysics Data System (ADS)

    Li, H.; Harvey, J. T.; Holland, T. J.; Kayhanian, M.

    2013-03-01

    To help address the built environmental issues of both heat island and stormwater runoff, strategies that make pavements cooler and permeable have been investigated through measurements and modeling of a set of pavement test sections. The investigation included the hydraulic and thermal performance of the pavements. The permeability results showed that permeable interlocking concrete pavers have the highest permeability (or infiltration rate, ˜0.5 cm s-1). The two permeable asphalt pavements showed the lowest permeability, but still had an infiltration rate of ˜0.1 cm s-1, which is adequate to drain rainwater without generating surface runoff during most typical rain events in central California. An increase in albedo can significantly reduce the daytime high surface temperature in summer. Permeable pavements under wet conditions could give lower surface temperatures than impermeable pavements. The cooling effect highly depends on the availability of moisture near the surface layer and the evaporation rate. The peak cooling effect of watering for the test sections was approximately 15-35 °C on the pavement surface temperature in the early afternoon during summer in central California. The evaporative cooling effect on the pavement surface temperature at 4:00 pm on the third day (25 h after watering) was still 2-7 °C lower compared to that on the second day, without considering the higher air temperature on the third day. A separate and related simulation study performed by UCPRC showed that full depth permeable pavements, if designed properly, can carry both light-duty traffic and certain heavy-duty vehicles while retaining the runoff volume captured from an average California storm event. These preliminarily results indicated the technical feasibility of combined reflective and permeable pavements for addressing the built environment issues related to both heat island mitigation and stormwater runoff management.

  11. Development of Performance-Related Specification for Fresh Emulsions Used for Surface Treatments and Performance Study of Chip Seals and Microsurfacing

    NASA Astrophysics Data System (ADS)

    Ilias, Mohammad

    Pavement preservation is a rapidly growing strategy for prolonging pavement service life. Pavement preservation consists of applying a thin layer of asphalt binder or emulsion with or without aggregate to the surface of an existing pavement. Preservation treatments do not provide any structural strength to the pavement but restores skid resistance, seals existing cracks, protects the underlying pavement from intrusion of water, and reduces further oxidative aging of the underlying pavement. In recent years, significant research has been dedicated to improving design of pavement preservation treatments. In pavement preservation treatments, asphalt emulsion is the predominant binding material used because of its low viscosity compared to asphalt cement which allows for production at greatly reduced temperatures, leading to energy efficiency, and potential cost savings. Currently, specifications for emulsions used in pavement preservation treatments are empirical and lack of direct relationship to performance. This study seeks to improve specifications for emulsions used in preservation treatments by developing performancerelated specifications (PRS) for (a) fresh emulsion properties, (b) microsurfacing emulsion residue, and (c) low-temperature raveling of chip seal emulsion residues. Fresh emulsion properties dictate constructability and stability, and consequently the resultant performance of a preservation treatment once placed. Specification test methods are proposed for chip seals, microsurfacings, and spray seals that reflect storage and construction conditions of the emulsions. Performance is quantified using viscosity measurements. Specification limits are determined based on a prior knowledge of emulsion performance coupled with statistical analyses. Microsurfacings are a preservation treatment consisting of application of a thin layer of asphalt emulsion -- fine aggregate mixture. Presently, mixture design and performances of microsurfacing mixtures are appraised using the procedure specified by the International Slurry Surfacing Association (ISSA) with no provision for quantifying microsurfacing residue performance. In this study, residue performance is quantified using the Multiple Stress Creep and Recovery (MSCR) test for rutting and bleeding, the Bitumen Bond Strength Test (BBS) for raveling, Low Temperature Frequency (LTF) test for low temperature Bending Beam Rheometer (BBR) properties prediction, and Single Edge Notched Bend (SENB) fracture test developed under this work. Microsurfacing mixture performance is quantified using the Wet Track Abrasion Test (WTAT) for raveling, Model Mobile Load Simulator (MMLS3) for rutting and bleeding, and SENB test developed for low-temperature cracking. Microsurfacing mixture performance is correlated to residue properties in order to identify critical emulsion residue properties in determining performance and to derive specification limits. Results indicate rutting and thermal cracking are the distresses most directly related to the emulsion residue performance. Correspondingly, specifications are proposed to address rutting at high temperature and thermal cracking at low temperature based on the relationship between residue and mixture results coupled. In addition, test methods and specification criteria are developed to address lowtemperature raveling resistance of emulsion residues used in chip seals. The SENB test is used to quantify residue resistance to thermal cracking under the assumption that lowtemperature raveling occurs primarily by cohesive fracture of the residue in the chip seal. The Vialit test is modified and employed for quantifying raveling resistance of chip seals mixture for determining if the SENB test captures binder contribution to mixture raveling. The correlation between residue and mixture properties have been used to assess applicability of the residue tests and to derive specification limits.

  12. Evaluation of airfield pavement evenness

    NASA Astrophysics Data System (ADS)

    Pietruszewski, Paweł; Poświata, Adam; Wesołowski, Mariusz

    2018-05-01

    The evenness of airfield pavements is one of the basic operating parameters, which characterize them. The evenness determines not only comfort of traffic along an airfield pavement, but also influences the size of dynamic effect on the pavement, hence, the safety of air operations. In addition, the evenness condition changing as a result of dynamic loads, adverse weather conditions or inappropriate airfield pavement construction technology, lead to deviations from the desired condition in the form of longitudinal and transverse unevenness. As a result, systematic and correct performance of tests is a very significant and required factor impacting the improvement of traffic safety on airfield pavements. If the data obtained through the measurements are not sufficiently reliable, they may consequently lead to making incorrect decisions, which can ultimately impact the safety of air operations.

  13. Forensic Investigation of AC and PCC Pavements with Extended Service Life : Volume 1

    DOT National Transportation Integrated Search

    2010-09-01

    The purpose of this research was to identify flexible and rigid pavements in Ohio with average and above average performance, and determine the reasons for these differences in performance. The identification and implementation of factors linked to e...

  14. Incremental Costs and Performance Benefits of Various Features of Concrete Pavements

    DOT National Transportation Integrated Search

    2004-04-01

    Various design features (such as dowel bars, tied shoulders, or drainable bases) may be added to a portland cement concrete (PCC) pavement design to improve its overall performance by maintaining a higher level of serviceability or by extending its s...

  15. High-performance continuously reinforced concrete pavements in Richmond and Lynchburg, Virginia.

    DOT National Transportation Integrated Search

    2007-01-01

    This study evaluated the properties of two high performance concrete (HPC) paving projects in Virginia. These continuously reinforced concrete pavements were placed on State Route 288 near Richmond and on the U.S. 29 Madison Heights Bypass in Lynchbu...

  16. Verification, refinement, and applicability of long-term pavement performance vehicle classification rules.

    DOT National Transportation Integrated Search

    2014-11-01

    The Long-Term Pavement Performance (LTPP) project has developed and deployed a set of rules for converting axle spacing and weight data into estimates of a vehicles classification. These rules are being used at Transportation Pooled Fund Study (TP...

  17. Evaluation of high performance pavement and bridge deck wearing surface repair materials.

    DOT National Transportation Integrated Search

    2016-08-01

    This project provided for a laboratory and field testing of several high performance repair materials for : pavements and concrete bridge decks. The main purpose was to provide ODOT with materials and procedures : to shorten road and bridge closures....

  18. Construction and performance monitoring of various asphalt mixes in Illinois : 2016 interim report.

    DOT National Transportation Integrated Search

    2017-02-01

    A series of five experimental projects were constructed to better determine the life-cycle cost and performance of pavement overlays using various levels of asphalt binder replacement (ABR) from use of reclaimed asphalt pavement (RAP), recycled aspha...

  19. Study of a rehabilitated road using GPR and FWD

    NASA Astrophysics Data System (ADS)

    Marecos, Vania; Fontul, Simona; de Lurdes Antunes, Maria; Solla, Mercedes; Pajewski, Lara

    2017-04-01

    This work focus on the structural evaluation of a rehabilitated road after the conclusion of the first phase of the improvement works. The activities developed in the study comprised the characterization of the pavement layers condition (before the application of the asphalt surface layer) and the prediction of the pavement bearing capacity (taking into account the contribution of the wearing course, to be placed in accordance with the project specifications). For this study two non-destructive tests (NDT) were combined: Falling Weight Deflectometer (FWD) and Ground Penetrating Radar (GPR). The original pavement was essentially composed by a granular layer treated with a bituminous emulsion. The main objectives of the rehabilitation works were the enlargement of the road platform in selected locations, with the construction of a new pavement, and also the reinforcement of the existing pavement to increase its bearing capacity. The FWD tests were performed to assess the bearing capacity of the pavement and were conducted along the outer wheel path, in both directions. The spacing between measurement points was 75 m and the applied impulse load was 50 kN. The results showed a great variability of the deflections measured along the section under study. A preliminary zonation of the pavement was carried out, and was latter adjusted based on the results of the GPR. To determine the thickness of the pavement layers a GPR survey was carried out using a 1.8 GHz antenna and a radar control unit SIR-20, both from GSSI. The GPR tests were performed continuously along the same line as the FWD tests. The GPR tests allowed for the identification of the different structures of the pavement, corresponding to the zones with the new pavement and the existing pavement with reinforcement. Some cores were extracted to calibrate the thickness of the GPR bituminous layers, to verify the conditions of adhesion between layers and also to perform laboratory tests to characterize the bituminous mixtures. Test pits were also carried out to calibrate the GPR thickness for the granular layers. It was concluded that the areas with higher deflections coincided with the new pavement areas. The GPR results showed that in the existing reinforced pavement zones the total thickness of the reinforcement layers were higher than design values. On the other hand, for the new pavement zones, it was observed lower thicknesses for the base and sub-base layers and also for the binder layer, in comparison with the design values. The results of the laboratory tests carried out on samples of the bituminous mixtures showed that, in general, those mixtures had percentages of bitumen and porosities above the expected values. Based on the tests carried out, pavement response models were established and their predictable load capacity was estimated. This abstract is a contribution to COST Action TU1208 Civil Engineering Applications of Ground Penetrating Radar.

  20. 77 FR 37735 - Agency Information Collection Activities: Request for Comments for a New Information Collection

    Federal Register 2010, 2011, 2012, 2013, 2014

    2012-06-22

    ... NW., Washington, DC 20503, Attention DOT Desk Officer. You are asked to comment on any aspect of this... to as ``quieter pavements.'' In 2003, FHWA entered into the Quiet Pavement Pilot Program with the... Systems in Europe,'' and funded several national workshops, trainings, and informational outreach pieces...

  1. Internal hydrological mechanism of permeable pavement and interaction with subsurface water - slides

    EPA Science Inventory

    A permeable pavement site located at the Seitz Elementary School on Fort Riley, Kansas was selected for this study. An 80-space parking lot was built behind the school as part of an EPA ORD collaboration with the U.S. Army under the Net Zero program. The parking lot design includ...

  2. Development of a simplified flexible pavement design protocol for New York State Department of Transportation based on the AASHTO Mechanistic-Empirical Pavement Design Guide : technical summary.

    DOT National Transportation Integrated Search

    2017-01-01

    This report summarizes the local calibration of the distress models for the Northeast (NE) region of the United States and the development of new design tables for new flexible pavement structures. Design, performance, and traffic data collected on t...

  3. Critical assessment of I-85 CRCP crack spacing patterns and their implications for long-term performance.

    DOT National Transportation Integrated Search

    2014-01-01

    Transverse crack patterns in Continuously Reinforced Concrete Pavement (CRCP) are important : indicators of pavement performance. This study is a) to study the Mean Crack Spacing (MCS) and localized : cracks of a newly constructed CRCP and compare th...

  4. Guidance for improving foundation layers to increase pavement performance on local roads.

    DOT National Transportation Integrated Search

    2014-11-01

    This document is the second of two deliverables for the project Optimizing Pavement Base, Subbase, and Subgrade Layers : for Cost and Performance on Local Roads (TR-640). The first deliverable is the 454-page Final Field Data Report. The field : data...

  5. Modeling the performance properties of RAS and RAP blended asphalt mixes using chemical compositional information.

    DOT National Transportation Integrated Search

    2017-01-01

    Reclaimed asphalt pavement (RAP) and recycled asphalt shingles (RAS) can improve the sustainability of asphalt concrete (AC) due to cost savings and environmental factors, but it is necessary to ensure that pavement performance is not compromised. To...

  6. Investigating longevity of corrosion inhibitors and performance of deicer products under storage or after pavement application.

    DOT National Transportation Integrated Search

    2011-06-01

    This study evaluated the longevity of corrosion inhibitors and the performance of inhibited deicer products under storage or after pavement application. No significant degradation of corrosion inhibitor or loss of chlorides was seen during the months...

  7. Utilizing the long-term pavement performance database in evaluating the effectiveness of pavement smoothness

    DOT National Transportation Integrated Search

    2002-03-01

    This research project was performed in two phases. The first phase concentrated on previous related literature review and a nationwide survey to find out the current practices of smoothness specifications. The second phase dealt with collecting and a...

  8. Development of a validation process for parameters utilized in optimizing construction quality management of pavements.

    DOT National Transportation Integrated Search

    2006-01-01

    The implementation of an effective performance-based construction quality management requires a tool for determining impacts of construction quality on the life-cycle performance of pavements. This report presents an update on the efforts in the deve...

  9. Optimal Maintenance Works for the Aborshada Road in the Western Region of Libya

    NASA Astrophysics Data System (ADS)

    Youssef, Medhat Abdelrahman; Elbasher, Abdelbary Altayb

    2014-09-01

    In this research, the condition of a road pavement was investigated for the Aborshada Road in the Gharian region of Libya to determine the optimal maintenance works. Previously, a simple engineering judgment was the only procedure followed by the Gharian municipal engineers for evaluating pavements and prioritizing maintenance. The surface condition of the Aborshada Road pavement was investigated using "the Pavement Condition Index (PCI)" visual technique. The pavement was inspected to survey the different distresses in each sample unit. Ninteen pavement distresses were classified according to the PCI standards (PCI for roads and parking lots became an ASTM standard in 2007 (D6433-07)). It was necessary to know the most common distresses of the Aborshada Road to provide assistance for the decision maker in his evaluation of the pavement and the optimum repair method to be selected. This study reveals the actual performance of the pavements and suggests the research required for dealing with the pavement maintenance problem in Libya, especially in the western region. The best maintenance alternative for Aborshada Road was Case No. 3 (Potholes, Long. & Trans. Cracking and Alligator Crack Maintenance). Also, the most common pavement distresses on the Aborshada Road were Distress Nos. 1, 3, 6, 7, 10 and 13 according to the ASTM - D6433-07 classification

  10. Highway pavement performance test for colored thin anti-skidding layers

    NASA Astrophysics Data System (ADS)

    Gao, Wei; Cui, Wei; Xu, Ming

    2018-03-01

    Based on the actual service condition of highway pavement colored thin anti-skidding layers, with materials of color quartz sand and two-component acrylic resin as basis, we designed such tests as the bond strength, shearing strength, tear strength, fatigue performance and aggregate polished value, and included the freeze-thaw cycle and de-icing salt and other factors in the experiment, connecting with the climate characteristics of circumpolar latitude and low altitude in Heilongjiang province. Through the pavement performance test, it is confirmed that the colored thin anti-skidding layers can adapt to cold and humid climate conditions, and its physical mechanical properties are good.

  11. Stormwater quality of spring-summer-fall effluent from three partial-infiltration permeable pavement systems and conventional asphalt pavement.

    PubMed

    Drake, Jennifer; Bradford, Andrea; Van Seters, Tim

    2014-06-15

    This study examined the spring, summer and fall water quality performance of three partial-infiltration permeable pavement (PP) systems and a conventional asphalt pavement in Ontario. The study, conducted between 2010 and 2012, compared the water quality of effluent from two Interlocking Permeable Concrete Pavements (AquaPave(®) and Eco-Optiloc(®)) and a Hydromedia(®) Pervious Concrete pavement with runoff from an Asphalt control pavement. The usage of permeable pavements can mitigate the impact of urbanization on receiving surface water systems through quantity control and stormwater treatment. The PP systems provided excellent stormwater treatment for petroleum hydrocarbons, total suspended solids, metals (copper, iron, manganese and zinc) and nutrients (total-nitrogen and total-phosphorus) by reducing event mean concentrations (EMC) as well as total pollutant loadings. The PPs significantly reduced the concentration and loading of ammonia (NH4(+)+NH3), nitrite (NO2(-)) and organic-nitrogen (Org-N) but increased the concentration and loading of nitrate (NO3(-)). The PP systems had mixed performances for the treatment of phosphate (PO4(3-)). The PP systems increased the concentration of sodium (Na) and chloride (Cl) but EMCs remained well below recommended levels for drinking water quality. Relative to the observed runoff, winter road salt was released more slowly from the PP systems resulting in elevated spring and early-summer Cl and Na concentrations in effluent. PP materials were found to introduce dissolved solids into the infiltrating stormwater. The release of these pollutants was verified by additional laboratory scale testing of the individual pavement and aggregate materials at the University of Guelph. Pollutant concentrations were greatest during the first few months after construction and declined rapidly over the course of the study. Copyright © 2014 Elsevier Ltd. All rights reserved.

  12. Some advances/results in monitoring road cracks from 2D pavement images within the scope of the collaborative FP7 TRIMM project

    NASA Astrophysics Data System (ADS)

    Baltazart, Vincent; Moliard, Jean-Marc; Amhaz, Rabih; Wright, Dean; Jethwa, Manish

    2015-04-01

    Monitoring road surface conditions is an important issue in many countries. Several projects have looked into this issue in recent years, including TRIMM 2011-2014. The objective of such projects has been to detect surface distresses, like cracking, raveling and water ponding, in order to plan effective road maintenance and to afford a better sustainability of the pavement. The monitoring of cracking conventionally focuses on open cracks on the surface of the pavement, as opposed to reflexive cracks embedded in the pavement materials. For monitoring surface condition, in situ human visual inspection has been gradually replaced by automatic image data collection at traffic speed. Off-line image processing techniques have been developed for monitoring surface condition in support of human visual control. Full automation of crack monitoring has been approached with caution, and depends on a proper manual assessment of the performance. This work firstly presents some aspects of the current state of monitoring that have been reported so far in the literature and in previous projects: imaging technology and image processing techniques. Then, the work presents the two image processing techniques that have been developed within the scope of the TRIMM project to automatically detect pavement cracking from images. The first technique is a heuristic approach (HA) based on the search for gradient within the image. It was originally developed to process pavement images from the French imaging device, Aigle-RN. The second technique, the Minimal Path Selection (MPS) method, has been developed within an ongoing PhD work at IFSTTAR. The proposed new technique provides a fine and accurate segmentation of the crack pattern along with the estimation of the crack width. HA has been assessed against the field data collection provided by Yotta and TRL with the imaging device Tempest 2. The performance assessment has been threefold: first it was performed against the reference data set including 130 km of pavement images over UK roads, second over a few selected short sections of contiguous pavement images, and finally over a few sample images as a case study. The performance of MPS has been assessed against an older image data base. Pixel-based PGT was available to provide the most sensitive performance assessment. MPS has shown its ability to provide a very accurate cracking pattern without reducing the image resolution on the segmented images. Thus, it allows measurement of the crack width; it is found to behave more robustly against the image texture and better matched for dealing with low contrast pavement images. The benchmarking of seven automatic segmentation techniques has been provided at both the pixel and the grid levels. The performance assessment includes three minimal path selection algorithms, namely MPS, Free Form Anisotropy (FFA), one geodesic contour with automatic selection of points of interests (GC-POI), HA, and two Markov-based methods. Among others, MPS approach reached the best performance at the pixel level while it is matched to the FFA approach at the grid level. Finally, the project has emphasized the need for a reliable ground truth data collection. Owing to its accuracy, MPS may serve as a reference benchmark for other methods to provide the automatic segmentation of pavement images at the pixel level and beyond. As a counterpart, MPS requires a reduction in the computing time. Keywords: cracking, automatic segmentation, image processing, pavement, surface distress, monitoring, DICE, performance

  13. Guide to Developing Performance-Related Specifications For PCC Pavements. Volume I: Practical Guide, Final Report and Appendix A

    DOT National Transportation Integrated Search

    1999-02-01

    This report (FHWA-RD-98-155), the first of a four-volume set of reports, presents guidelines and recommendations to assist a highway agency in developing and using performance-related specifications for portland cement concrete pavement construction....

  14. Water Quality Performance of Three Side-by-Side Permeable Pavement Surface Materials: Three Year Update

    EPA Science Inventory

    Communities are increasingly installing structural low impact development (LID) practices to mange stormwater and reduce pollutant loads associated with stormwater runoff. Permeable pavement is a LID practice that has limited research on working-scale, side-by-side performance o...

  15. Monitoring and modeling of pavement response and performance task B : New York volume 1, I490, RT9a, and I86 AC pavement.

    DOT National Transportation Integrated Search

    2012-05-01

    This volume reports on experiments at three pavement sites in New York, I490 in Rochester, RT9A in New York City, : and I86 near Angelica. I490 included JPCP sections instrumented to monitor loss of support from curling and warping : during curing an...

  16. Effects of street tree shade on asphalt concrete pavement performance

    Treesearch

    E.G. McPherson; J. Muchnick

    2005-01-01

    Forty-eight street segments were paired into 24 high-and low-shade pairs in Modesto, California, U.S. Field data were collected to calculate a Pavement Condition Index (PCI) and Tree Shade Index (TSI) for each segment. Statistical analyses found that greater PCI was associated with greater TSI, indicating that tree shade was partially responsible for reduced pavement...

  17. 25 CFR 170.502 - Are management systems required for the IRR Program?

    Code of Federal Regulations, 2010 CFR

    2010-04-01

    ... RESERVATION ROADS PROGRAM Planning, Design, and Construction of Indian Reservation Roads Program Facilities... the following systems for the IRR Program: (1) Pavement management; (2) Safety management; (3) Bridge...

  18. 25 CFR 170.502 - Are management systems required for the IRR Program?

    Code of Federal Regulations, 2011 CFR

    2011-04-01

    ... RESERVATION ROADS PROGRAM Planning, Design, and Construction of Indian Reservation Roads Program Facilities... the following systems for the IRR Program: (1) Pavement management; (2) Safety management; (3) Bridge...

  19. 25 CFR 170.502 - Are management systems required for the IRR Program?

    Code of Federal Regulations, 2012 CFR

    2012-04-01

    ... RESERVATION ROADS PROGRAM Planning, Design, and Construction of Indian Reservation Roads Program Facilities... the following systems for the IRR Program: (1) Pavement management; (2) Safety management; (3) Bridge...

  20. 25 CFR 170.502 - Are management systems required for the IRR Program?

    Code of Federal Regulations, 2013 CFR

    2013-04-01

    ... RESERVATION ROADS PROGRAM Planning, Design, and Construction of Indian Reservation Roads Program Facilities... the following systems for the IRR Program: (1) Pavement management; (2) Safety management; (3) Bridge...

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