Author: Eugene L. SkokPublisher: DEStech Publications, Inc
ISBN: 1605950688
Category : Science
Languages : en
Pages : 801
Book Description
Asphalt Paving Technology 2011
Author: Eugene L. SkokPublisher: DEStech Publications, Inc
ISBN: 1605950688
Category : Science
Languages : en
Pages : 801
Book Description
Mechanistic-empirical Pavement Design Guide
Author: American Association of State Highway and Transportation OfficialsPublisher: AASHTO
ISBN: 156051423X
Category : Pavements
Languages : en
Pages : 218
Book Description
Analysis of Virginia-specific Traffic Data Inputs for Use with the Mechanistic-empirical Pavement Design Guide
Author: Bryan C. SmithPublisher:
ISBN:
Category : Axial loads
Languages : en
Pages : 42
Book Description
This study developed traffic inputs for use with the Guide for the Mechanistic-Empirical Design of New & Rehabilitated Pavement Structures (MEPDG) in Virginia and sought to determine if the predicted distresses showed differences between site-specific and default traffic inputs for flexible and rigid pavements. The axle-load spectra, monthly adjustment factors, vehicle class distribution factors, and number of axles per truck inputs were considered. The predicted distresses based on site-specific traffic inputs from eight interstate and seven primary route weigh-in-motion sites in Virginia were compared to predicted distresses using MEPDG default traffic inputs. These comparisons were performed by use of a normalized difference statistic for each site-specific traffic input and the coefficient of variation for each pavement distress model. In addition, the practical significance for flexible pavements was considered from the difference in the predicted time to failure between site-specific and default traffic inputs. The analysis showed that the effect of the site-specific traffic inputs was generally not statistically significant when the uncertainty of the distress models was considered. However, the site-specific axle-load spectra and vehicle class distribution inputs showed a statistically significant effect on certain predicted distresses for flexible and rigid pavements, respectively. The study recommends that site-specific axle-load spectra data be considered for analysis of flexible pavements. Alternatively, summary (statewide average) axle-load spectra data for analysis of interstate and primary flexible pavements should be considered preferentially over default axle-load spectra. Site-specific vehicle class distribution factors should be considered for analysis of rigid pavements on the interstate system. Alternatively, summary (statewide average) vehicle class distribution factors for analysis of interstate rigid pavements should be considered preferentially over default vehicle class distribution data. Default traffic data are recommended for analysis of primary rigid pavements. This study also recommends that a local calibration process be completed to determine if the predictive models accurately predict the conditions found on Virginia's roadways. If the predictive models are modified, the results may impact the recommendations resulting from this study. The implementation of the recommendations of this study and the use of the MEPDG in general will provide the Virginia Department of Transportation with a more advanced means of designing and analyzing pavements. This should result in optimal designs that are more efficient in terms of initial construction and future maintenance costs.
Focus
Author: From Fundamentals to Applications in Geotechnics
Author: D. ManzanalPublisher: IOS Press
ISBN: 1614996032
Category : Technology & Engineering
Languages : en
Pages : 3344
Book Description
The work of geotechnical engineers contributes to the creation of safe, economic and pleasant spaces to live, work and relax all over the world. Advances are constantly being made, and the expertise of the profession becomes ever more important with the increased pressure on space and resources. This book presents the proceedings of the 15th Pan-American Conference on Soil Mechanics and Geotechnical Engineering (XV PCSMGE), held in Buenos Aires, Argentina, in November 2015. This conference, held every four years, is an important opportunity for international experts, researchers, academics, professionals and geo-engineering companies to meet and exchange ideas and research findings in the areas of soil mechanics, rock mechanics, and their applications in civil, mining and environmental engineering. The articles are divided into nine sections: transportation geotechnics; in-situ testing; geo-engineering for energy and sustainability; numerical modeling in geotechnics; foundations and ground improvement; unsaturated soil behavior; embankments, dams and tailings; excavations and tunnels; and geo-risks, and cover a wide spectrum of issues from fundamentals to applications in geotechnics. This book will undoubtedly represent an essential reference for academics, researchers and practitioners in the field of soil mechanics and geotechnical engineering. In this proceedings, approximately 65% of the contributions are in English, and 35% of the contributions are in Spanish or Portuguese.
Public Roads
Author: Changes to the "Mechanistic-empirical Pavement Design Guide" Software Through Version 0.900, July 2006
Author: Publisher:
ISBN:
Category : Pavements
Languages : en
Pages : 28
Book Description
"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].
Transportation Research Record
Author: Models for Predicting Reflection Cracking of Hot-mix Asphalt Overlays
Author: Robert L. LyttonPublisher: Transportation Research Board National Research
ISBN:
Category : Technology & Engineering
Languages : en
Pages : 76
Book Description
TRB's National Cooperative Highway Research Program (NCHRP) Report 669: Models for Predicting Reflection Cracking of Hot-Mix Asphalt Overlays explores mechanistic-based models for predicting the extent and severity of reflection cracking in hot-mix asphalt overlays. Appendices A through T to NCHRP Report 669 are available online--
Author: