Mechanistic Empirical Pavement Design Guide Mepdg Method Implemented To Estimate Damage In Flexible And Rigid Pavements
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Mechanistic Empirical Pavement Design Guide Mepdg Method Implemented To Estimate Damage In Flexible And Rigid Pavements
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Author : Tenzin Gusto
language : en
Publisher:
Release Date : 2016
Mechanistic Empirical Pavement Design Guide Mepdg Method Implemented To Estimate Damage In Flexible And Rigid Pavements written by Tenzin Gusto and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2016 with categories.
The implementation of the Empirical-Mechanistic Pavement Design Guide (MEPDG) method for flexible and rigid pavements requires numerous input parameters. Most of these parameters can be easily determined while some require best estimates that are usually extracted from available literature. This thesis identifies the most critical input parameters in terms of their effects on the damage of pavements and their influence on the determination of the number of corrective maintenance cycles to be performed during the design life of pavements. It was found that for flexible pavement, change in the average monthly temperature by as little as results in large differences in the number of corrective maintenance cycles. Also, consistently with simple mechanics concepts, pavements on stiffer foundations performed better under the load and hence, required fewer number of the corrective maintenance cycles than those founded on more flexible soils. Also, variations in truck weights affected the outcome in terms of the estimated number of corrective maintenance cycles for flexible pavement. Hence, better estimates of the number of corrective maintenance cycles can be obtained when the analysis was based on larger numbers of truck samples. On the contrary, no significant difference in the final estimation of the number of corrective maintenance cycles was found for rigid pavements even when the average monthly temperatures were increased or decreased by as much as . Moreover, no major difference was observed when a larger sample of trucks was used as input for the analysis. Similarly, change in ambient temperature which is directly related to the differential temperature on the top and the bottom of the slab that may lead to the curling of the slab and faulting, was found not to be critical. Similar to the results obtained for flexible pavements, rigid pavement with stiffer foundation properties performed better in terms of the number of corrective maintenance cycles as they required fewer corrective maintenance cycles.
Mechanistic Empirical Pavement Design Guide
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Author : American Association of State Highway and Transportation Officials
language : en
Publisher: AASHTO
Release Date : 2008
Mechanistic Empirical Pavement Design Guide written by American Association of State Highway and Transportation Officials and has been published by AASHTO this book supported file pdf, txt, epub, kindle and other format this book has been release on 2008 with Pavements categories.
Implementation Plan For The New Mechanistic Empirical Pavement Design Guide
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Author : Y. Richard Kim
language : en
Publisher:
Release Date : 2007
Implementation Plan For The New Mechanistic Empirical Pavement Design Guide written by Y. Richard Kim and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2007 with Pavements categories.
Development And Implementation Of A Mechanistic And Empirical Pavement Design Guide Mepdg For Rigid Pavements Phase 2
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Author : Tyler Ley
language : en
Publisher:
Release Date : 2014
Development And Implementation Of A Mechanistic And Empirical Pavement Design Guide Mepdg For Rigid Pavements Phase 2 written by Tyler Ley and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2014 with Pavements, Concrete categories.
Implementation Of The Mechanistic Empirical Pavement Design Guide In Utah
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Author : Michael I. Darter
language : en
Publisher:
Release Date : 2009
Implementation Of The Mechanistic Empirical Pavement Design Guide In Utah written by Michael I. Darter and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2009 with Pavements categories.
"Highway agencies across the nation are moving towards implementation of the new AASHTO Mechanistic- Empirical Pavement Design Guide (MEPDG) for pavement design. The objective of this project was to implement the MEPDG into the daily operations of the Utah Department of Transportation (UDOT). The implementation of the MEPDG as a UDOT standard required modifications in some UDOT pavement design protocols (i.e., lab testing procedures, equipment, and protocols, traffic data reporting, software issues, design output interpretation, and others). A key requirement is validation of the MEPDG's nationally calibrated pavement distress and smoothness prediction models when applied under Utah conditions and performing local calibration if needed. This was accomplished using data from Long Term Pavement Performance (LTPP) projects located in Utah and UDOT pavement management system (PMS) pavement sections. The nationally calibrated MEPDG models were evaluated. With the exception of the new hot-mix asphalt (HMA) pavement total rutting model, all other models were found to be reasonable. The rutting model was locally calibrated to increase goodness of fit and remove significant bias. Due to the nature of the data used in model validation, it is recommended that further MEPDG model validation be accomplished in the future using a database that contains HMA pavement and jointed plain concrete pavement (JPCP) exhibiting moderate to severe deterioration. This report represents Phase II of the UDOT MEPDG implementation study and builds on the Phase I study report completed in 2005 for UDOT. The Draft User's Guide for UDOT Mechanistic-Empirical Pavement Design (UDOT Research Report No. UT-09.11a, dated October 2009) incorporates the findings of this report as inputs and pavement design guidelines for Utah for use by UDOT's pavement design engineers during trial implementation of the MEPDG"--Technical report documentation p.
Concrete Pavement Design Construction And Performance
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Author : Norbert Delatte
language : en
Publisher: CRC Press
Release Date : 2018-10-08
Concrete Pavement Design Construction And Performance written by Norbert Delatte and has been published by CRC Press this book supported file pdf, txt, epub, kindle and other format this book has been release on 2018-10-08 with Technology & Engineering categories.
Addressing the interactions between the different design and construction variables and techniques this book illustrates best practices for constructing economical, long life concrete pavements. The book proceeds in much the same way as a pavement construction project. First, different alternatives for concrete pavement solutions are outlined. The desired performance and behaviour parameters are identified. Next, appropriate materials are outlined and the most suitable concrete proportions determined. The design can be completed, and then the necessary construction steps for translating the design into a durable facility are carried out. Although the focus reflects highways as the most common application, special features of airport, industrial, and light duty pavements are also addressed. Use is made of modeling and performance tools such as HIPERPAV and LTPP to illustrate behavior and performance, along with some case studies. As concrete pavements are more complex than they seem, and the costs of mistakes or of over-design can be high, this is a valuable book for engineers in both the public and private sectors.
Calibrating The Mechanistic Empirical Pavement Design Guide For Kansas
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Author : Xiaohui Sun (Writer on roads)
language : en
Publisher:
Release Date : 2015
Calibrating The Mechanistic Empirical Pavement Design Guide For Kansas written by Xiaohui Sun (Writer on roads) and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2015 with Pavements categories.
The Kansas Department of Transportation (KDOT) is moving toward the implementation of the new American Association of State Highway and Transportation Officials (AASHTO) Mechanistic-Empirical Pavement Design Guide (MEPDG) for pavement design. The MEPDG provides a rational pavement design framework based on mechanistic-empirical principles to characterize the effects of climate, traffic, and material properties on the pavement performance, as compared with the 1993 AASHTO Guide for Design of Pavement Structures. Before moving to the MEPDG, the nationally calibrated MEPDG distress prediction models need to be further validated and calibrated to the local condition. The objective of this research was to improve the accuracy of the MEPDG to predict the pavement performance in Kansas. This objective was achieved by evaluating the MEPDG-predicted performance of Kansas projects, as compared with the pavement performance data from the pavement management system (PMS), and calibrating the MEPDG models based on the pavement performance data. In this study, 28 flexible pavement projects and 32 rigid pavement projects with different material properties, traffic volumes, and climate conditions were strategically selected throughout Kansas. The AASHTO ME Design software (Version 1.3) was used in this study. The comparisons between the MEPDG-predicted pavement performance using the nationally calibrated models and the measured pavement performance indicated the need for the calibration of the MEPDG models to the Kansas conditions. For new flexible pavements, the MEPDG using the nationally calibrated models overestimated the rutting due to the overprediction of the deformation of the subgrade layer. Biases also existed between the predicted top-down cracking, thermal cracking, and International Roughness Index (IRI) and the measured data. The relationship between the measured and the predicted IRIs was more obvious than that for the cracking. Using the coefficients determined through local calibration in this study, the biases and the standard errors were minimized for all the models based on the statistical analysis. For new rigid pavements, very low mean joint faulting was measured in actual projects as compared with the default threshold of the MEPDG. The type of base course had a minor effect on the pavement performance. The traditional splitting data method was adopted in the process of local calibration. After the local calibration, the biases between the predicted pavement performance (mean joint faulting and IRI) and the measured pavement performance were minimized, and the standard errors were reduced.
Mechanistic Empirical Pavement Design Guide Implementation Plan
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Author : Todd E. Hoerner
language : en
Publisher:
Release Date : 2007
Mechanistic Empirical Pavement Design Guide Implementation Plan written by Todd E. Hoerner and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2007 with Pavements categories.
As AASH is expected to eventually adopt the MEPDG at its primary pavement design method, it is critical that the SDDOT become familiar with the MEPGD documentation and associated design software. The research conducted under this project was a first step toward achieving this goal.
Improvements To Strain Computation And Reliabilty Analysis Of Flexible Pavements In The Mechanistic Empirical Pavement Design Guide
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Author : Senthilmurugan Thyagarajan
language : en
Publisher:
Release Date : 2009
Improvements To Strain Computation And Reliabilty Analysis Of Flexible Pavements In The Mechanistic Empirical Pavement Design Guide written by Senthilmurugan Thyagarajan and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2009 with Pavements categories.
Implementation Of The Mechanistic Empirical Pavement Design Guide For New And Rehabilitated Pavement Structures For Design Of Concrete And Asphalt Pavements In Minnesota
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Author : Raul Velasquez
language : en
Publisher:
Release Date : 2009
Implementation Of The Mechanistic Empirical Pavement Design Guide For New And Rehabilitated Pavement Structures For Design Of Concrete And Asphalt Pavements In Minnesota written by Raul Velasquez and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2009 with Pavements categories.
The recently introduced Mechanistic-Empirical Pavement Design Guide (MEPDG) and related software provide capabilities for the analysis and performance prediction of different types of flexible and rigid pavements. An important aspect of this process is the evaluation of the performance prediction models and sensitivity of the predicted distresses to various input parameters for local conditions and, if necessary, re-calibration of the performance prediction models. To achieve these objectives, the Minnesota Department of Transportation (MnDOT) and the Local Road Research Board (LRRB) initiated a study "Implementation of the MEPDG for New and Rehabilitated Pavement Structures for Design of Concrete and Asphalt Pavements in Minnesota." This report presents the results of the evaluation of default inputs, identification of deficiencies in the software, sensitivity analysis, and comparison of results to the expected limits for typical Minnesota site conditions, a wide range of pavement design features (e.g. layer thickness, material properties, etc), and the effects of different parameters on predicted pavement distresses. Since the sensitivity analysis was conducted over a span of several years and the MEPDG software underwent significant modifications, especially for flexible pavements, various versions of the MEPDG software were run. Performance prediction models of the latest version of the MEPDG 1.003 were evaluated and modified or recalibrated to reduce bias and error in performance prediction for Minnesota conditions.