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Development Of A Regional Pavement Performance Database For The Aashto Mechanistic Empiricle Sic Pavement Design Guide Validation And Local Calibration
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Book Synopsis Development of a Regional Pavement Performance Database for the AASHTO Mechanistic-empiricle [sic] Pavement Design Guide: Validation and local calibration by : Swetha Kesiraju
Download or read book Development of a Regional Pavement Performance Database for the AASHTO Mechanistic-empiricle [sic] Pavement Design Guide: Validation and local calibration written by Swetha Kesiraju and published by . This book was released on 2007 with total page 98 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Development of a Regional Pavement Performance Database for the AASHTO Mechanistic-empiricle [sic] Pavement Design Guide: Sensitivity analysis by : Swetha Kesiraju
Download or read book Development of a Regional Pavement Performance Database for the AASHTO Mechanistic-empiricle [sic] Pavement Design Guide: Sensitivity analysis written by Swetha Kesiraju and published by . This book was released on 2007 with total page 60 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Calibration and Validation of the Enhanced Integrated Climatic Model for Pavement Design by : C. E. Zapata
Download or read book Calibration and Validation of the Enhanced Integrated Climatic Model for Pavement Design written by C. E. Zapata and published by Transportation Research Board National Research. This book was released on 2008 with total page 76 pages. Available in PDF, EPUB and Kindle. Book excerpt: "This report summarizes the results of research to evaluate, calibrate, and validate the Enhanced Integrated Climatic Model (EICM) incorporated in the original Version 0.7 (July 2004 release) of the Mechanistic-Empirical Pavement Design Guide (MEPDG) software with measured materials data from the Long-Term Pavement Performance Seasonal Monitoring Program (LTPP SMP) pavement sections. The report further describes subsequent changes made to the EICM to improve its prediction of moisture equilibrium for granular bases. The report will be of particular interest to pavement design engineers in state highway agencies and industry ..."--Foreword.
Book Synopsis Database Development for an HMA Pavement Performance Analysis System by : Robert L. Schmitt (Ph.D.)
Download or read book Database Development for an HMA Pavement Performance Analysis System written by Robert L. Schmitt (Ph.D.) and published by . This book was released on 2008 with total page 66 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Local Calibration of Pavement ME and Performance Evaluation of Pavement Rehabilitation and Preservation Asphalt Overlays in Louisiana by : Farzana Moon
Download or read book Local Calibration of Pavement ME and Performance Evaluation of Pavement Rehabilitation and Preservation Asphalt Overlays in Louisiana written by Farzana Moon and published by . This book was released on 2022 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: Asphalt overlays can be categorized as pavement rehabilitation structural overlays or pavement preservation overlays in terms of the thickness and timing of maintenance activities. Pavement rehabilitation overlay contributes to the structural enhancement of pavements and pavement preservation overlays generally provide functional improvement to an existing pavement. In recent times, the pavement design approach employed by the Louisiana Department of Transportation and Development (LADOTD) has been transitioning from the 1993 AASHTO design procedure to a locally calibrated Pavement ME method. The AASHTOWare Pavement ME (Mechanistic-Empirical) design procedure is considered the modern approach to pavement design. Significant updates have been introduced in the Pavement ME design software in the past few years. Therefore, this study focused on conducting a local calibration of the Pavement ME procedure for asphalt overlays in Louisiana. In addition, performance evaluation of the asphalt overlays was conducted to determine the factors that would have an impact on their performance. In total, 37 rehabilitation asphalt overlay projects and 33 preservation asphalt overlay projects were selected all over Louisiana with different base types and traffic volumes. These projects consisted of mainly three types of bases: soil cement base, crushed stone base and Portland cement concrete base. The pavement performance data were collected from the Louisiana Pavement Management System (LA-PMS) database and the data regarding geographical location, design thickness, and traffic were retrieved from the LADOTD intranet. The field performance of the asphalt overlays was investigated in terms of several design parameters i.e. base type, traffic level, total Hot Mix Asphalt (HMA) thickness after milling, pavement precondition and overlay service life. Manual calibration of Pavement ME was performed for rehabilitation asphalt overlays and a calibrator assistance tool was adopted for the local calibration of preservation asphalt overlays to calibrate the performance models in terms of typical pavement structure, traffic, and weather conditions of Louisiana. The results showed that the existing pavement condition does have an impact on preservation overlay performance since distress in pavements with poor precondition was observed to be higher. The pavement with good precondition and higher asphalt concrete (AC) thickness exhibited higher service life. A case study was performed to determine the optimal timing of preservation overlay applications based on cost-benefit analysis. Fatigue cracking was under-predicted and transverse cracking was over-predicted by the Pavement ME national model for rehabilitation overlays. For preservation overlays, both the fatigue cracking and transverse cracking were under-predicted. Therefore, the performance models were adjusted through the local calibration to match the field measurement.
Book Synopsis Consideration of Preservation in Pavement Design and Analysis Procedures by :
Download or read book Consideration of Preservation in Pavement Design and Analysis Procedures written by and published by . This book was released on 2015 with total page 72 pages. Available in PDF, EPUB and Kindle. Book excerpt: "TRB's National Cooperative Highway Research Program (NCHRP) Report 810: Consideration of Preservation in Pavement Design and Analysis Procedures explores the effects of preservation on pavement performance and service life and describes three different approaches for considering these effects in pavement design and analysis procedures. The report may serve as a basis for developing procedures for incorporating preservation in the American Association of State Highway and Transportation Officials (AASHTO) Mechanistic-Empirical Pavement Design Guide: A Manual of Practice (MEPDG) and the AASHTOWare Pavement ME Design software. Initially, the scope of this project intended to develop procedures for incorporating pavement preservation treatments into the MEPDG design analysis process that would become part of the MEPDG Manual of Practice. However, it was determined that sufficient data were not available to support the development of such procedures. Appendices A through I are available online only." --
Book Synopsis Calibrated Mechanistic Structural Analysis Procedures for Pavements: Final report by :
Download or read book Calibrated Mechanistic Structural Analysis Procedures for Pavements: Final report written by and published by . This book was released on 1990 with total page 200 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Longterm pavement performance information management system pavement performance database user reference guide by :
Download or read book Longterm pavement performance information management system pavement performance database user reference guide written by and published by DIANE Publishing. This book was released on with total page 172 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Consideration of Preservation in Pavement Design and Analysis Procedures by :
Download or read book Consideration of Preservation in Pavement Design and Analysis Procedures written by and published by . This book was released on 2015 with total page 60 pages. Available in PDF, EPUB and Kindle. Book excerpt: "TRB's National Cooperative Highway Research Program (NCHRP) Report 810: Consideration of Preservation in Pavement Design and Analysis Procedures explores the effects of preservation on pavement performance and service life and describes three different approaches for considering these effects in pavement design and analysis procedures. The report may serve as a basis for developing procedures for incorporating preservation in the American Association of State Highway and Transportation Officials (AASHTO) Mechanistic-Empirical Pavement Design Guide: A Manual of Practice (MEPDG) and the AASHTOWare Pavement ME Design software. Initially, the scope of this project intended to develop procedures for incorporating pavement preservation treatments into the MEPDG design analysis process that would become part of the MEPDG Manual of Practice. However, it was determined that sufficient data were not available to support the development of such procedures. Appendices A through I are available online only." --
Book Synopsis Changes to the "Mechanistic-empirical Pavement Design Guide" Software Through Version 0.900, July 2006 by :
Download or read book Changes to the "Mechanistic-empirical Pavement Design Guide" Software Through Version 0.900, July 2006 written by and published by . This book was released on 2006 with total page 28 pages. Available in PDF, EPUB and Kindle. Book excerpt: "This digest summarizes key findings from NCHRP Project 1-40D, "Technical Assistance to NCHRP and NCHRP Project 1-40A: Versions 0.900 and 1.0 of the M-E Pavement Design Sofware," conducted by Applied Research Associates, Inc., and Arizona State University. The digest was prepared by Michael I. Darter ... [et al.]"--P. [1].
Author :Robert L. Lytton Publisher :Strategic Highway Research Program (Shrp) ISBN 13 :9780309056175 Total Pages :500 pages Book Rating :4.0/5 (561 download)
Book Synopsis Development and Validation of Performance Prediction Models and Specifications for Asphalt Binders and Paving Mixes by : Robert L. Lytton
Download or read book Development and Validation of Performance Prediction Models and Specifications for Asphalt Binders and Paving Mixes written by Robert L. Lytton and published by Strategic Highway Research Program (Shrp). This book was released on 1993 with total page 500 pages. Available in PDF, EPUB and Kindle. Book excerpt: A result of the Strategic Highway Research Program's asphalt research is the development of performance-based specifications for asphalt binders and mixtures to control 3 distress modes: rutting; fatigue cracking; and thermal cracking. The SHRP A-005 project developed detailed pavement performance models to support these binder and mixture specifications and performance-based mixture designs. This report documents the findings of this extensive research effort and provides supporting data for the performance-based specifications and mixture design procedure called SUPERPAVE. The A-005 contract developed and used a sophisticated, mechanistic-based pavement performance model to define the relationships between asphalt binder and mixture properties and pavement distress. A comprehensive pavement performance model was developed that predicts the amount of fatigue cracking, thermal cracking and rutting in asphalt concrete pavements with time, using results from the accelerated laboratory tests. The pavement performance models for each distress were also used to confirm the relevant binder and mixture properties established by other SHRP contractors. The model has 3 parts: a mixture evaluation model; a pavement response model; and a pavement distress model.
Book Synopsis Performance testing for Superpave and structural validation by : Nelson Gibson
Download or read book Performance testing for Superpave and structural validation written by Nelson Gibson and published by . This book was released on 2012 with total page 253 pages. Available in PDF, EPUB and Kindle. Book excerpt: The primary objective of this full-scale accelerated pavement testing was to evaluate the performance of unmodified and polymer modified asphalt binders and to recommend improved specification tests over existing SUperior PERforming Asphalt PAVEment (Superpave) binder performance grading methodologies. Candidate replacement tests were evaluated via their ability to discern fatigue cracking resistance and rutting. Two fatigue cracking specification tests were identified as more capable in capturing performance than others: binder yield energy and critical tip opening displacement. Two rutting specification tests that quantify irrecoverable deformations exhibited the best strength to capture rutting: multiple stress creep and recovery and oscillatory-based nonrecoverable stiffness. Based on the full-scale performance and laboratory tests, crumb rubber (recycled tires) modified asphalt (Arizona wet process) was shown to significantly slow or stop the growth of fatigue cracks in a composite asphalt pavement structure. A hybrid technique to modify asphalt with a combination of crumb rubber and conventional polymers (terminally blended) exhibited good fatigue cracking resistance relative to the control binder. Also, a simple addition of polyester fibers to asphalt mix was shown to have high resistance to fatigue cracking without the use of polymer modification. The research study also quantified the capabilities of the National Cooperative Highway Research Program's mechanistic-empirical pavement design and analysis methodologies to predict rutting and fatigue cracking of modified asphalts that were not captured in the calibration data from the Long-Term Pavement Performance program. Falling weight deflectometer, multidepth deflectometer, and strain gauge instrumentation were used to measure pavement response. The results illustrated that the nationally calibrated mechanistic-empirical performance models could differentiate between structural asphalt thickness but had difficulty differentiating modified from unmodified asphalt binder performance. Nonetheless, the mechanistic-empirical performance ranking and predictions were enhanced and improved using mixture-specific performance tests currently being implemented using the asphalt mixture performance tester.
Book Synopsis Signalement Conrad Wetter ein Schreiner, gebürtig von St. Gallen, 41 Jahr alt, ... der Ermordung seiner Ehefrau beschuldigte by :
Download or read book Signalement Conrad Wetter ein Schreiner, gebürtig von St. Gallen, 41 Jahr alt, ... der Ermordung seiner Ehefrau beschuldigte written by and published by . This book was released on 1807 with total page 2 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Mechanistic Evaluation and Calibration of the AASHTO Design Equations and Mechanistic Analysis of the SHRP Asphalt Surfaced Pavement Sections by : Gilbert Y. Baladi
Download or read book Mechanistic Evaluation and Calibration of the AASHTO Design Equations and Mechanistic Analysis of the SHRP Asphalt Surfaced Pavement Sections written by Gilbert Y. Baladi and published by . This book was released on 1994 with total page 256 pages. Available in PDF, EPUB and Kindle. Book excerpt: Mechanistic evaluation of the American Association of State Highway and Transportation Officials (AASHTO) flexible design equations was conducted by using 243 artificial pavement sections with various layer properties, roadbed soil modulus, and traffic volumes. A mechanistic-based modification procedure of the effects of the AASHTO drainage coefficient is presented. A nomograph for estimating the effects of drainage coefficients on the expected life of the pavement structures is also presented and discussed. Finally, the results of the backcalculated layer moduli of some of the Strategic Highway Research Program asphalt surfaced General Pavement Studies sections are presented and the accuracy of the values briefly discussed.
Book Synopsis Pavement Testing and Design, 2008 by :
Download or read book Pavement Testing and Design, 2008 written by and published by . This book was released on 2008 with total page 141 pages. Available in PDF, EPUB and Kindle. Book excerpt: TRB's Transportation Research Record: Journal of the Transportation Research Board, No. 2087 includes 14 papers that explore extended-life hot-mix asphalt pavement design, benefits of the Minnesota Road Research Project, calibration of mechanistic-empirical models for flexible pavements, perpetual pavement response to vehicular loading, repeatability of asphalt strain measurements, coefficient of thermal expansion of concrete materials, and adaptation of the Mechanistic-Empirical Pavement Design Guide (MEPDG) for design of Minnesota low-volume concrete pavements. This issue of the TRR also examines ground penetrating radar for detection of delamination in concrete pavements, accuracy of current complex modulus selection procedure from vehicular load pulse, effect of traffic load measurement bias on pavement life prediction, conversion of testing frequency to loading time applied to the MEPDG, database support for the MEPDG, pavement rutting performance prediction by the integrated Weibull approach, and local calibration of the MEPDG for flexible pavement design.
Download or read book Composite Pavement Systems written by and published by . This book was released on 2013 with total page 135 pages. Available in PDF, EPUB and Kindle. Book excerpt: "Composite pavements have proved in Europe and the United States to have long service life with excellent surface characteristics, structural capacity, and rapid renewal when needed. Based on statistics compiled in 2000, approximately 30% of the urban interstate system and just over 20% of the rural interstate system is classified as "composite" pavement. In most cases the composite pavements are the result of maintenance and rehabilitation activities and not intentionally designed new composite pavement systems. This project developed the guidance needed to design and construct new composite pavement systems. The research determined the behavior, properties, and performance for both HMA/PCC and the PCC/PCC composite pavements under many climate and traffic conditions. Experimental composite pavements were constructed at MnROAD in Minnesota and the University of California Pavement Research Center at Davis, where the pavements were instrumented and monitored under climate and heavy traffic loadings. A composite pavement consisting of HMA over jointed plain concrete also was constructed in the field by the Illinois Tollway north of Chicago. At the Tollway, extensive field surveys were performed on 64 sections of the two types of composite pavements. This project also evaluated, improved, and further validated applicable structural, climatic, material, and performance prediction models, and design algorithms that are included in the AASHTO MEPDG and DARWin-ME, CalME, NCHRP 1-41 reflection cracking, NCHRP 9-30A rutting, and the Lattice bonding model. The current DARWin-ME overlay design procedure for HMA/PCC and a special R21 version of the Mechanistic-Empirical Pavement Design Guide (MEPDG [v. 1.3000:R21]) can be used for new PCC/PCC composite pavements. The key to the sustainable features of new composite pavements is the ability to use higher levels of recycled materials in the lower concrete layer. Additionally, the thickness of the lower concrete layer can be reduced when considering the insulating effect of the top pavement surface. Intentionally designed and constructed composite pavements will help highway agencies meet the goal of building economical, sustainable pavement structures that use higher levels of recycled materials and locally available materials"--Foreword.
Download or read book Pavement Management, 2009 written by and published by . This book was released on 2009 with total page 152 pages. Available in PDF, EPUB and Kindle. Book excerpt:
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