Development Of Texas Mechanistic Empirical Flexible Pavement Design System Txme
DOWNLOAD
Download Development Of Texas Mechanistic Empirical Flexible Pavement Design System Txme PDF/ePub or read online books in Mobi eBooks. Click Download or Read Online button to get Development Of Texas Mechanistic Empirical Flexible Pavement Design System Txme book now. This website allows unlimited access to, at the time of writing, more than 1.5 million titles, including hundreds of thousands of titles in various foreign languages. If the content not found or just blank you must refresh this page
Development Of Texas Mechanistic Empirical Flexible Pavement Design System Txme
DOWNLOAD
Author : Sheng Hu
language : en
Publisher:
Release Date : 2014
Development Of Texas Mechanistic Empirical Flexible Pavement Design System Txme written by Sheng Hu 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, Flexible categories.
Implementation Of Texas Mechanistic Empirical Flexible Pavement Design System Txme
DOWNLOAD
Author : Sheng Hu
language : en
Publisher:
Release Date : 2019
Implementation Of Texas Mechanistic Empirical Flexible Pavement Design System Txme written by Sheng Hu and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2019 with Asphalt concrete categories.
The Texas Mechanistic-Empirical flexible pavement design system (TxME) allows Texas pavement designers to take full advantage of new or premium materials, with a full consideration of the influential factors including pavement structure, traffic volume, and environmental condition. To further enhance and implement the software, extensive lab testing was conducted to develop default material properties. These properties include the default dynamic modulus, rutting and cracking properties of asphalt concrete (AC) mixtures, and moduli of other layer materials. Specifically, the relationships between reclaimed asphalt pavement/reclaimed asphalt shingles contents and the AC material properties were established and incorporated into the TxME. In addition, default load spectra and initial construction cost analysis were integrated into the TxME. All these features greatly enhanced the practicality and ease of using TxME when conducting pavement design. The Texas Flexible Pavement Database was used to calibrate the TxME performance models. The calibrated TxME was then employed to predict performance of 11 identified test sections located in six different districts. The comparison between the TxME predictions and the field performance survey results further confirmed the validation of the calibrated performance models. Overall, the current TxME is practical, user-friendly, and ready for statewide implementation.
Texas Mechanistic Empirical Flexible Pavement Design And Analysis System Txme Student Handbook
DOWNLOAD
Author : Sheng Hu
language : en
Publisher:
Release Date : 2019
Texas Mechanistic Empirical Flexible Pavement Design And Analysis System Txme Student Handbook written by Sheng Hu and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2019 with Asphalt concrete categories.
This product is the Student Handbook used during the course on the new flexible pavement design and performance analysis system named the Texas Mechanistic-Empirical Flexible Pavement Design and Analysis System (TxME). The Handbook can be used either as a TxME user manual or as a standalone resource of the Mechanistic-Empirical (M-E) flexible pavement design training material that provides basic and advanced training.
Texas Mechanistic Empirical Flexible Pavement Design And Analysis System Txme Instructor Guide
DOWNLOAD
Author : Sheng Hu
language : en
Publisher:
Release Date : 2019
Texas Mechanistic Empirical Flexible Pavement Design And Analysis System Txme Instructor Guide written by Sheng Hu and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2019 with Asphalt concrete categories.
This product is the Instructor Guide for the course on the new flexible pavement design and performance analysis system named the Texas Mechanistic-Empirical Flexible Pavement Design and Analysis System (TxME). The half-day course sought to help TxDOT pavement engineers to routinely design long-lasting yet economical flexible pavements by providing an advanced, in-depth, hands-on understanding of the TxME.
Development Of A Flexible Pavement Design Procedure Based On The Mechanistic Empirical Pavement Design Guide
DOWNLOAD
Author : Ali Qays Abdullah
language : en
Publisher:
Release Date : 2012
Development Of A Flexible Pavement Design Procedure Based On The Mechanistic Empirical Pavement Design Guide written by Ali Qays Abdullah and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2012 with categories.
This research developed design tables of new flexible pavement structures for New York State Department of Transportation based on the Mechanistic Empirical Design Guide (MEPDG). The design tables were developed using the MEPDG software for Regions 1, 3, and 7 for Upstate part of New York State and for Regions 8, 10, and 11 for the Downstate part of New York State. The MEPDG software was used to run design cases for combinations of: climate conditions, traffic volume, subgrade soil stiffness (Mr) and pavement structures. The conditions that the MEPDG was used to run were: the road structures classified as Principal Arterial Interstate, design 95%reliability level, 15 and 20 year analysis period. Weight in Motion (WIM) data of Region 7 were used for Region 1 and 2, also WIM data of Region 8 were used for Region 10 and 11. Climatic data specifically for each region were used. The NYSDOT's Comprehensive Pavement Design Manual (CPDM) was initially used to obtain pavement design solutions for Region 7 and 8. The granular subbase materials and thicknesses recommended by CPDM were used but only the asphalt layer thicknesses was varied to include several values higher and lower than the thickness recommended by CPDM. The thickness of asphalt binder and surface layers were kept constant. Only the thickness of the base layer was changed. For each design combination, the design case with thinnest asphalt layer for which the predicted distress was less the performance criteria was selected as the design solution. The design solutions for Regions 7 and 8 were assembled in design tables. The examination of the design tables proved that, in general, Region 7 requires thicker pavement structures than Region 8 for same Annual Average Daily Truck Traffic (AADTT) and Resilient Modulus. In the second phase, the MEPDG was used to run for Region 1, 3, 10, 11. The design solutions were tabulated first to produce the design tables for each design case. Since it was expected that the climate changing has no effects on the design solutions for the regions which belong to the same New York State part, the design tables of Region 7 were compared with the design tables of Regions 1 and 3. In addition, the design tables of Region 8 were compared with those obtained for Regions 10 and 11. The comparisons proved that the change in location within the same part of New York State affects the design solution for the same combination of subgrade soil stiffness and truck traffic volume. In the third phase, the design tables for 80% design reliability were produced for each selected region. The design tables which were developed by this study provide flexibility to the designer to design the new flexible pavement structure. The designer should select the subgrade (Mr), AADTT, design life, and the design reliability; then, the design solution could be obtained directly from the tables.
Mechanistic Empirical Pavement Design Guide
DOWNLOAD
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.
Flexible Pavement Design System Fps 19
DOWNLOAD
Author : Thomas Scullion
language : en
Publisher:
Release Date : 1998
Flexible Pavement Design System Fps 19 written by Thomas Scullion and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1998 with Pavements, Asphalt categories.
FPS 19 is the latest version of the flexible pavement design system developed by the Texas Transportation Institute for TxDOT. This version uses backcalculated elastic moduli of the pavement layer materials in the pavement design process. The MODULUS 5.1 backcalculation procedure generates the input layer moduli. The WESLEA linear elastic computer program, embedded within FPS 19, computes pavement responses. The design equation used is the same as used in FPS 11 and documented in TTI Report 32-11. The main design parameter is the Surface Curvature Index computed at the midpoint of a set of dual tires loaded to 40 Kn (9,000 lbs). FPS 19 is microcomputer-based and compatible with MS-DOS Windows 95 and Windows NT when running under the DOS window. TxDOT is implementing the FPS 19 computer program statewide as part of its new flexible pavement design system.
Development And Implementation Of A Mechanistic Empirical Based Overlay Design Procedure For Flexible Pavements
DOWNLOAD
Author :
language : en
Publisher:
Release Date : 1993
Development And Implementation Of A Mechanistic Empirical Based Overlay Design Procedure For Flexible Pavements written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1993 with categories.
A New Flexible Pavement Design Method
DOWNLOAD
Author : Lennart Djärf
language : en
Publisher:
Release Date : 1996
A New Flexible Pavement Design Method written by Lennart Djärf and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1996 with Computer-aided design categories.
Local Calibration Of Mechanistic Empirical Pavement Design Guide For North Eastern United States
DOWNLOAD
Author : Shariq A. Momin
language : en
Publisher:
Release Date : 2011
Local Calibration Of Mechanistic Empirical Pavement Design Guide For North Eastern United States written by Shariq A. Momin and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2011 with categories.
The Mechanistic-Empirical Pavement Design Guide (MEPDG) developed under the National Cooperative Highway Research Program (NCHRP) 1-37A project is based on mechanistic-empirical analysis of the pavement structure to predict the performance of the pavement under different sets of conditions (traffic, structure and environment). MEPDG takes into account the advanced modeling concepts and pavement performance models in performing the analysis and design of pavement. The mechanistic part of the design concept relies on the application of engineering mechanics to calculate stresses, strains and deformations in the pavement structure induced by the vehicle loads. The empirical part of the concept is based on laboratory developed performance models that are calibrated with the observed distresses in the in-service pavements with known structural properties, traffic loadings, and performances. These models in the MEPDG were calibrated using a national database of pavement performance data (Long Term Pavement Performance, LTPP) and will provide design solution for pavements with a national average performance. In order to improve the performance prediction of the models and the efficiency of the design for a given state, it is necessary to calibrate it to local conditions by taking into consideration locally available materials, traffic information and the environmental conditions. The objective of this study was to calibrate the MEPDG flexible pavement performance models to local conditions of Northeastern region of United States. To achieve this, seventeen pavement sections were selected for the calibration process and the relevant data (structural, traffic, climatic and pavement performance) was obtained from the LTPP database. MEPDG software (Version 1.1) simulation runs were made using the nationally calibrated coefficients and the MEPDG predicted distresses were compared with the LTPP measured distresses (rutting, alligator and longitudinal cracking, thermal cracking and IRI). The predicted distresses showed fair agreement with the measured distresses but still significant differences were found. The difference between the measured and the predicted distresses were minimized through recalibration of the MEPDG distress models. For the permanent deformation models of each layer, a simple linear regression with no intercept was performed and a new set of model coefficients (ßr1, ßGB, and ßSG) for asphalt concrete, granular base and subgrade layer models were calculated. The calibration of alligator (bottom-up fatigue cracking) and longitudinal (topdown fatigue cracking) was done by deriving the appropriate model coefficients (C1, C2, and C4) since the fatigue damage is given in MEDPG software output. Thermal cracking model was not calibrated since the measured transverse cracking data in the LTPP database did not increase with time, as expected to increase with time. The calibration of IRI model was done by computing the model coefficients (C1, C2, C3, and C4) based on other distresses (rutting, total fatigue cracking, and transverse cracking) by performing a simple linear regression.