Laboratory Evaluation Of Asphalt Concrete Mixtures Containing High Contents Of Reclaimed Asphalt Pavement Rap And Binder
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Laboratory Evaluation Of Asphalt Concrete Mixtures Containing High Contents Of Reclaimed Asphalt Pavement Rap And Binder
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Author :
language : en
Publisher:
Release Date : 2014
Laboratory Evaluation Of Asphalt Concrete Mixtures Containing High Contents Of Reclaimed Asphalt Pavement Rap And Binder written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2014 with Asphalt categories.
This study investigated the effect of added asphalt binder content on the performance and volumetric properties of asphalt concrete mixtures containing reclaimed asphalt pavement (RAP) in the amounts of 0%, 20%, and 40%. A laboratory-produced mixture containing 100% RAP was also evaluated. Performance of the mixtures was evaluated based on three criteria: stiffness (dynamic modulus), fatigue resistance, and rutting resistance (flow number and asphalt pavement analyzer). Results showed that a 0.5% increase in binder content improved both the fatigue and rutting resistance of the 0% and 20% RAP mixtures with only slight (insignificant) decreases in dynamic modulus. However, the addition of various amounts of binder to the 40% RAP mixture led to a significant decrease in rutting resistance with little or no improvement to fatigue resistance. Volumetric analysis was performed on all of the mixtures, and detailed results are presented. Based on the results of the study, the authors recommend that the Virginia Department of Transportation supplement current asphalt mixture design procedures that are based on mixture volumetric properties with laboratory-mixture performance testing.
Improved Mix Design Evaluation And Materials Management Practices For Hot Mix Asphalt With High Reclaimed Asphalt Pavement Content
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Author : Randy Clark West
language : en
Publisher: Transportation Research Board
Release Date : 2013
Improved Mix Design Evaluation And Materials Management Practices For Hot Mix Asphalt With High Reclaimed Asphalt Pavement Content written by Randy Clark West and has been published by Transportation Research Board this book supported file pdf, txt, epub, kindle and other format this book has been release on 2013 with Pavements, Asphalt categories.
TRB's National Cooperative Highway Research Program (NCHRP) Report 752: Improved Mix Design, Evaluation, and Materials Management Practices for Hot Mix Asphalt with High Reclaimed Asphalt Pavement Content describes proposed revisions to the American Association of State Highway and Transportation Officials (AASHTO) R 35, Superpave Volumetric Design for Hot Mix Asphalt, and AASHTO M 323, Superpave Volumetric Mix Design, to accommodate the design of asphalt mixtures with high reclaimed asphalt pavement contents.
Evaluating The Effect Of High Rap Content On Asphalt Mixtures And Binders Fatigue Behavior
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Author : Umme Amina Mannan
language : en
Publisher:
Release Date : 2018
Evaluating The Effect Of High Rap Content On Asphalt Mixtures And Binders Fatigue Behavior written by Umme Amina Mannan and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2018 with Asphalt categories.
One of the main concerns with the application of reclaimed asphalt pavement (RAP) in the asphalt concrete pavement is fatigue cracking due to the stiffness increase with the addition of aged and stiff RAP binder. The purpose of this study is to evaluate fatigue performance of asphalt binder and mixtures with different RAP percentages (0, 15, 25, 35 and 40 %). Among these, 35 and 40 % RAP mixes are considered as high RAP content. This study describes the results of laboratory fatigue response of asphalt mixtures and extracted binders containing RAP to define the effect of RAP on the fatigue performance. To achieve this objective, mixes and binders were tested using the beam fatigue test and the time-sweep test, respectively. Test results were analyzed using two different fatigue approaches, reduction in stiffness and dissipated energy criteria. Results showed that a higher initial stiffness and initial dissipated energy initiate the fatigue failure faster. Since both binders and mixes show an increase in the stiffness and energy consumed per loading cycle with the addition of RAP, resulting mixes containing higher RAP have a very short fatigue life. Also, the fatigue endurance limit decreases drastically with the addition of RAP in the mix. The results comparing two different RAP sources showed that the RAP source has more prominent effect on the mix fatigue performance than the binder fatigue performance. Finally, the traditional fatigue life prediction model is modified to incorporate the effect of RAP in the fatigue equation. The modified regression model predicted reasonable fatigue life of the mixture with a coefficient of determination (R2) close to 1. The measured and predicted fatigue life results were found close to each other for both mix and binder containing RAP.
Proceedings Of The 7th International Conference On Civil Engineering For Sustainable Development Iccesd 2024
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Author : Rokonuzzaman
language : en
Publisher: Springer Nature
Release Date : 2024
Proceedings Of The 7th International Conference On Civil Engineering For Sustainable Development Iccesd 2024 written by Rokonuzzaman and has been published by Springer Nature this book supported file pdf, txt, epub, kindle and other format this book has been release on 2024 with Electronic books categories.
Pavement And Asset Management
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Author : Maurizio Crispino
language : en
Publisher: CRC Press
Release Date : 2019-02-21
Pavement And Asset Management written by Maurizio Crispino and has been published by CRC Press this book supported file pdf, txt, epub, kindle and other format this book has been release on 2019-02-21 with Technology & Engineering categories.
Pavement and Asset Management contains contributions from the World Conference on Pavement and Asset Management (WCPAM 2017, Baveno, Italy, 12-16 June 2017). For the first time, the European Pavement and Asset Management Conference (EPAM) and the International Conference on Managing Pavement Assets (ICMPA) were joining forces for a global event that aimed not only at academics and researchers, but also at practitioners, engineers and technicians dealing with everyday tasks and responsibilities related to transport infrastructures pavement and asset management. Pavement and Asset Management covers a wide range of topics, from emerging research to engineering practice, and is grouped under the following themes: - Data quality and monitoring - Economics, political and environmental management, strategies - Deterioration models - Key performance indicators - PMS-case studies - Design and materials - M&R treatments - LCA & LCCA - Risk and safety - Bridge and tunnel management - Smart infrastructure and IT Pavement and Asset Management will be valuable to academics and professionals interested and/or involved in issues related to transport infrastructures pavement and asset management.
Laboratory And Field Evaluation Of Hot Mix Asphalt With High Contents Of Reclaimed Asphalt Pavement
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Author : Clinton Isaac Van Winkle
language : en
Publisher:
Release Date : 2014
Laboratory And Field Evaluation Of Hot Mix Asphalt With High Contents Of Reclaimed Asphalt Pavement written by Clinton Isaac Van Winkle 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, Asphalt categories.
Currently in Iowa, the amount of RAP materials allowed for the surface layer is limited to 15% by weight. The objective of this project was to develop quality standards for inclusion of RAP content higher than 15% in asphalt mixtures. To meet Superpave mix design requirements, it was necessary to fractionate the RAP materials. Based on the extensive sieve-by-sieve analysis of RAP materials, the optimum sieve size to fractionate RAP materials was identified. To determine if the higher percentage of RAP materials than 15% can be used in Iowa's state highway, three test sections with 30.0%, 35.5% and 39.2% of RAP materials were constructed on Highway 6 in Iowa City. The construction of the field test sections was monitored and the cores were obtained to measure field densities of test sections. Field mixtures collected from test sections were compacted in the laboratory in order to test the moisture sensitivity using a Hamburg Wheel Tracking Device. The binder was extracted from the field mixtures with varying amounts of RAP materials and tested to determine the effects of RAP materials on the PG grade of a virgin binder. Field cores were taken from the various mix designs to determine the percent density of each test section. A condition survey of the test sections was then performed to evaluate the short-term performance.
Introduction To Unmanned Aircraft Systems Second Edition
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Author : Douglas M. Marshall
language : en
Publisher: CRC Press
Release Date : 2015-10-26
Introduction To Unmanned Aircraft Systems Second Edition written by Douglas M. Marshall and has been published by CRC Press this book supported file pdf, txt, epub, kindle and other format this book has been release on 2015-10-26 with Political Science categories.
The proliferation of technological capability, miniaturization, and demand for aerial intelligence is pushing unmanned aerial systems (UAS) into the realm of a multi-billion dollar industry. This book surveys the UAS landscape from history to future applications. It discusses commercial applications, integration into the national airspace system (NAS), System function, operational procedures, safety concerns, and a host of other relevant topics. The book is dynamic and well-illustrated with separate sections for terminology and web- based resources for further information.
Advances In Waste Processing Technology
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Author : Abu Zahrim Yaser
language : en
Publisher: Springer Nature
Release Date : 2020-05-20
Advances In Waste Processing Technology written by Abu Zahrim Yaser and has been published by Springer Nature this book supported file pdf, txt, epub, kindle and other format this book has been release on 2020-05-20 with Business & Economics categories.
This book highlights the latest research on waste processing technologies, particularly for domestic, agricultural, and petroleum based pollutants, intended to achieve waste valorisation. In addition, it discusses the important role of plastic recycling, as well as advanced waste processing techniques.
Proceedings Of The 9th International Conference On Maintenance And Rehabilitation Of Pavements Mairepav9
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Author : Christiane Raab
language : en
Publisher: Springer Nature
Release Date : 2020-06-19
Proceedings Of The 9th International Conference On Maintenance And Rehabilitation Of Pavements Mairepav9 written by Christiane Raab and has been published by Springer Nature this book supported file pdf, txt, epub, kindle and other format this book has been release on 2020-06-19 with Technology & Engineering categories.
This book gathers the proceedings of an international conference held at Empa (Swiss Federal Laboratories for materials Science and Technology) in Dübendorf, Switzerland, in July 2020. The conference series was established by the International Society of Maintenance and Rehabilitation of Transport Infrastructure (iSMARTi) for promoting and discussing state-of-the-art design, maintenance, rehabilitation and management of pavements. The inaugural conference was held at Mackenzie Presbyterian University in Sao Paulo, Brazil, in 2000. The series has steadily grown over the past 20 years, with installments hosted in various countries all over the world. The respective contributions share the latest insights from research and practice in the maintenance and rehabilitation of pavements, and discuss advanced materials, technologies and solutions for achieving an even more sustainable and environmentally friendly infrastructure.
Hot Mix Asphalt Mixtures
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Author :
language : en
Publisher:
Release Date : 1999
Hot Mix Asphalt Mixtures written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1999 with categories.