The Laboratory Performance And Aging Characteristics Of Rubber Modified Asphalt Mixture Using A Dry Process
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The Laboratory Performance And Aging Characteristics Of Rubber Modified Asphalt Mixture Using A Dry Process
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Author :
language : en
Publisher:
Release Date : 2020
The Laboratory Performance And Aging Characteristics Of Rubber Modified Asphalt Mixture Using A Dry Process written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2020 with categories.
Abstract : The accumulation of waste tires generates severe environmental issues. Using crumb rubber processed from waste tires on the pavement could relieve the pressure of waste tire on the environment and improve the performance of the pavement as well. The application of crumb rubber on the pavement using the dry process was proved to be a cost-effective strategy in some projects, however, the interaction between the rubber and asphalt binder was unknown in the rubber modified asphalt mixture using the dry process, especially when reclaimed asphalt pavement was adopted. The performance improvement of the rubber particle to the asphalt mixture was closely related to the interaction. The influence of aging on the characteristics of rubber modified asphalt mixture using the dry process is critical to its long-term performance. The scope of the dissertation is to evaluate the performance of rubber modified asphalt mixture using a dry process when reclaimed asphalt pavement was adopted. The influence of aging on the characteristics of the rubber modified asphalt mixture and the extracted asphalt binder were investigated. This dissertation proposed the volumetric design of rubber modified asphalt mixture using the dry process. The aggregate gradation determination, rubber modified asphalt mixture preparation, design binder content determination, and moisture susceptibility evaluation were proposed. The quality control of the laboratory mixture design procedure was critical to guarantee the consistency of the asphalt mixture design in the laboratory and the results of mixture construction in the plant. The high temperature rutting performance and the low temperature cracking performance of plant mixed and laboratory compacted asphalt mixture was evaluated. The influence of various factors, which included mixture design parameters of the asphalt mixture (nominal maximum aggregate size, reclaimed asphalt pavement content, and asphalt content), rubber modification, mixture air void content, test temperature, and aging procedure, on the rutting and low temperature characteristics of asphalt mixtures were evaluated. Based on the evaluation of different assessment parameters, the rubber addition and the rubber addition and aging were the two most critical factors that influenced the rutting and low temperature cracking performance of different asphalt mixtures. The effect of the Trichloroethylene solvent in asphalt binder was investigated, and the extracted asphalt binder was assessed and compared with the base asphalt binder and rubber modified base asphalt binder. Both the existence of Trichloroethylene and the content of Trichloroethylene had a significant influence on the |G*| of unaged and PAV aged asphalt binder. The Trichloroethylene in the extracted asphalt binder significantly influenced the actual performance of the asphalt binder in the reclaimed asphalt binder, thus potentially compromising the success mixture design. The modified extraction procedure was proposed to improve the accuracy of the extraction procedure. The rubber particles in the asphalt mixture using the dry process were not totally interacted with asphalt binder, only the interacted rubber particles were extracted, and the influence of the interacted rubber particle was assessed. The aged asphalt binder weakened the low temperature performance of the extracted asphalt binder. The aged asphalt binder and rubber in extracted asphalt binder guaranteed the asphalt binder to sustain heavy traffic load, thus improved the permanent deformation resistance of asphalt binder.
Evaluation Of Crumb Rubber Modified Mixtures Using Performance Based Analyses
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Author : Robert W. Saxton
language : en
Publisher:
Release Date : 1994
Evaluation Of Crumb Rubber Modified Mixtures Using Performance Based Analyses written by Robert W. Saxton and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1994 with Pavements, Asphalt categories.
This study investigated the laboratory performance of crumb rubber modified mixtures compared to a standard bituminous mixture using performance based test procedures. This study was part of an asphalt resurfacing program for the Seattle Washington area. Laboratory analyses were used to estimate the long term pavement performance of these mixtures in the field. Six mixtures were tested: The standard Class 'A' surface mixture for the Seattle area, Plus Ride II® base course gradation (dry process) using AC 5 and AR 4000W binder types, Plus Ride II® surface course gradation (dry process) using AC 5 and AR 4000W binder types, and ARHM-GG surface course gradation using crumb rubber modified (CRM) AR 2000 (wet process). The performance based tests used on each mixture evaluated the different failure modes a pavement may encounter in the field: fatigue cracking, permanent deformation (rutting), thermal cracking, age hardening, and water sensitivity. Many of the tests used were developed by the Strategic Highway Research Program (SHRP) to test for a mixtures susceptibility in these failure modes. Test results indicate the CRM mixtures performed better than the Class 'A' surface mixture, with respect to fatigue cracking. All of the Plus Ride II® mixtures performed inadequately when tested for permanent deformation. On the other hand, the ARHM-GG surface mixture performed well, even better than the Class 'A' surface mixture with respect to permanent deformation. The ARHM-GG surface mixture showed better low temperature characteristics when compared to the Class 'A' surface and Plus Ride II® mixtures. The CRM mixtures were less susceptible to aging than the Class 'A' surface mixture. Finally, all of the mixtures demonstrated low moisture sensitivity. The final conclusions were made relative to the Class 'A' surface mixture. The ARHM-GG surface mixture performed as well as, and in some cases better than, the Class 'A' surface mixture. The ARHM-GG surface mixture may be used where the Class 'A' surface mixture was specified. The Plus Ride II® base and surface (AC 5 and AR 4000W) mixtures did perform better than the Class 'A' surface mixture in some tests, however it performed worse in others. Therefore, it was recommended that the Plus Ride II® mixture designs be re-evaluated to provide adequate performance in the failed tests.
Proceedings Of The 10th International Conference On Maintenance And Rehabilitation Of Pavements
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Author : Paulo Pereira
language : en
Publisher: Springer Nature
Release Date :
Proceedings Of The 10th International Conference On Maintenance And Rehabilitation Of Pavements written by Paulo Pereira and has been published by Springer Nature this book supported file pdf, txt, epub, kindle and other format this book has been release on with categories.
Proceedings Of The 5th International Symposium On Asphalt Pavements Environment Ape
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Author : Marco Pasetto
language : en
Publisher: Springer Nature
Release Date : 2019-08-29
Proceedings Of The 5th International Symposium On Asphalt Pavements Environment Ape written by Marco Pasetto and has been published by Springer Nature this book supported file pdf, txt, epub, kindle and other format this book has been release on 2019-08-29 with Science categories.
This volume highlights the latest advances, innovations, and applications in the field of asphalt pavement technology, as presented by leading international researchers and engineers at the 5th International Symposium on Asphalt Pavements & Environment (ISAP 2019 APE Symposium), held in Padua, Italy on September 11-13, 2019. It covers a diverse range of topics concerning materials and technologies for asphalt pavements, designed for sustainability and environmental compatibility: sustainable pavement materials, marginal materials for asphalt pavements, pavement structures, testing methods and performance, maintenance and management methods, urban heat island mitigation, energy harvesting, and Life Cycle Assessment. The contributions, which were selected by means of a rigorous international peer-review process, present a wealth of exciting ideas that will open novel research directions and foster multidisciplinary collaboration among different specialists.
Evaluation Of Aging Characteristics Of Modified Asphalt Mixtures
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Author : S-C Huang
language : en
Publisher:
Release Date : 1995
Evaluation Of Aging Characteristics Of Modified Asphalt Mixtures written by S-C Huang and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1995 with Asphalt emulsion mixtures categories.
A laboratory investigation using typical Florida dense-graded and open-graded mixtures was conducted to evaluate the effects of a few promising modifiers on the long-term aging characteristics of asphalt mixtures. Six types of modifiers including gilsonite, carbon black, fine ground tire rubber (GTR-80), styrene-butylene-rubber (SBR), ethylene vinyl acetate (EVA) and styrene-ethylene-butylene-styrene (SEBS) were used in this study. These modifiers were blended with AC-30, AC-20, and AC-5 base asphalts to produce a total of ten modified asphalts. These ten modified asphalt blends and the unmodified AC-30 were used to make Florida type S-1 structural course and type FC-2 friction course asphalt mixtures. These mixtures were compacted into Marshall specimens for age hardening and subsequent testing. A total of 416 compacted modified and unmodified asphalt mixture specimens were subjected to a forced-draft oven aging process for 90 days at 60 °C (140 °F), and natural sunlight for 6 months to simulate the long-term aging effects on these mixtures. These aged and unaged asphalt mixtures were evaluated by (1) resilient modulus tests at 5 and 25 °C (41 and 77 °F) and (2) indirect tensile tests at 5 and 25 °C (41 and 77 °F). The effects of cycle frequency used in the resilient modulus tests were also assessed. The test results indicate that the modified asphalt mixtures appear to have more pronounced delayed elastic behavior as compared with that of the unmodified asphalt mixtures. The fracture energy, which is characterized by means of the area of stress-strain curve, indicated that the modified binders using a base asphalt of AC-30 tend to be too brittle as they harden further with time. However, modified binders using a base asphalt of AC-5 appear to be softer than that of conventional AC-30 under typical Florida conditions.
Development And Application Of Bituminous Materials For Civil Infrastructures
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Author : Hui Yao
language : en
Publisher: Frontiers Media SA
Release Date : 2021-10-22
Development And Application Of Bituminous Materials For Civil Infrastructures written by Hui Yao and has been published by Frontiers Media SA this book supported file pdf, txt, epub, kindle and other format this book has been release on 2021-10-22 with Technology & Engineering categories.
Characterisation Of Dry Process Crumb Rubber Modified Asphalt Mixtures
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Author : Mujibur Rahman
language : en
Publisher:
Release Date : 2004
Characterisation Of Dry Process Crumb Rubber Modified Asphalt Mixtures written by Mujibur Rahman and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2004 with Asphalt categories.
Advances In Road Infrastructure And Mobility
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Author : Amin Akhnoukh
language : en
Publisher: Springer Nature
Release Date : 2022-04-21
Advances In Road Infrastructure And Mobility written by Amin Akhnoukh and has been published by Springer Nature this book supported file pdf, txt, epub, kindle and other format this book has been release on 2022-04-21 with Technology & Engineering categories.
This volume focuses on recent advances in the planning, design, construction and management of new and existing roads with a particular focus on safety, sustainability and resilience. It discusses field experience through case studies and pilots presented by leading international subject-matter specialists. Chapters were selected from the 18th International Road Federation World Meeting & Exhibition, Dubai 2021.
Airfield And Highway Pavement 2013
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Author : Imad L. Al-Qadi
language : en
Publisher:
Release Date : 2013
Airfield And Highway Pavement 2013 written by Imad L. Al-Qadi and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2013 with Express highways categories.
The proceedings of the 2013 Airfield & Highway Pavement Conference: Sustainable and Efficient Pavements, held in Los Angeles, California, June 9-12, 2013 contains 123 peer-reviewed papers that focus on the latest developments and cutting-edge technological improvements in pavements and pavement sustainability. Topics include: advanced modeling, design, and analysis of pavements; construction and rehabilitation techniques; asphalt characterization and testing; recycling materials in pavements; pavement quality control/quality assurance; pavement sustainability and life-cycle assessment; nondestructive testing and evaluation; pavement management systems; and airfield and pavement case studies. This proceedings will be of interest to researchers, designers, project/construction managers, and contractors.
Bearing Capacity Of Roads Railways And Airfields
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Author : Andreas Loizos
language : en
Publisher: CRC Press
Release Date : 2017-07-20
Bearing Capacity Of Roads Railways And Airfields written by Andreas Loizos and has been published by CRC Press this book supported file pdf, txt, epub, kindle and other format this book has been release on 2017-07-20 with Technology & Engineering categories.
Bearing Capacity of Roads, Railways and Airfields includes the contributions to the 10th International Conference on the Bearing Capacity of Roads, Railways and Airfields (BCRRA 2017, 28-30 June 2017, Athens, Greece). The papers cover aspects related to materials, laboratory testing, design, construction, maintenance and management systems of transport infrastructure, and focus on roads, railways and airfields. Additional aspects that concern new materials and characterization, alternative rehabilitation techniques, technological advances as well as pavement and railway track substructure sustainability are included. The contributions discuss new concepts and innovative solutions, and are concentrated but not limited on the following topics: · Unbound aggregate materials and soil properties · Bound materials characteritics, mechanical properties and testing · Effect of traffic loading · In-situ measurements techniques and monitoring · Structural evaluation · Pavement serviceability condition · Rehabilitation and maintenance issues · Geophysical assessment · Stabilization and reinforcement · Performance modeling · Environmental challenges · Life cycle assessment and sustainability Bearing Capacity of Roads, Railways and Airfields is essential reading for academics and professionals involved or interested in transport infrastructure systems, in particular roads, railways and airfields.