Performance Of Asphalt Rubber Gap Graded Mixture Overlays Over Jointed Concrete Pavements
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Performance Of Asphalt Rubber Gap Graded Mixture Overlays Over Jointed Concrete Pavements
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Author : Harikrishnan Nair
language : en
Publisher:
Release Date : 2022
Performance Of Asphalt Rubber Gap Graded Mixture Overlays Over Jointed Concrete Pavements written by Harikrishnan Nair and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2022 with Asphalt--Additives categories.
The Virginia Department of Transportation (VDOT) maintains 3,343 lane-miles of composite pavements (asphalt over jointed concrete or continuously reinforced concrete pavements). Propagation of cracks from existing pavements into new asphalt concrete overlays (reflective cracking) is a major problem with composite pavements. Treatments that are used to reduce or mitigate reflective cracking include the use of asphalt mixtures with highly modified binders. One way of modifying asphalt mixtures is by using ground tire rubber (GTR), also referred to as rubber modified asphalt. There are three ways of adding GTR to asphalt mixtures: (1) traditional wet process, (2) terminal-blend wet process, and (3) dry process. The traditional wet process blends GTR with asphalt binder or bitumen on-site at the asphalt mixture plant prior to mixing the GTR modified asphalt binder with aggregate. The traditional wet process, along with a gap-graded stone structure, is typically used for incorporating higher GTR concentrations (>15%). VDOT has limited experience with rubber modified asphalt mixtures in general and even less experience with GTR content that exceeds 10%. The purpose of this study was to establish a performance baseline for an asphalt rubber gap-graded mixture (AR-GGM 12.5) using the wet process on I-85 in the Richmond District (I-85 Southbound, Dinwiddie County). Another objective was to compare its performance with VDOT’s stone matrix asphalt (SMA) mixture, which is also a gap-graded mixture. This study found that AR-GGM mixtures can be placed with no special field accommodations (compared with SMA mixtures), and the special provision developed for AR-GGM mixtures is effective. Further, based on laboratory performance testing, both the AR-GGM and SMA control mixtures tested in this demonstration project were crack and rutting resistant, with the AR-GGM mixture exhibiting more flexibility (i.e., lower stiffness). Both sections are performing as expected after 3 years of traffic and exhibiting minor to no distresses, with a Critical Condition Index greater than 90. However, at this early stage of field service, it is too soon to quantify a performance advantage of AR-GGM mixtures in comparison with conventional SMA mixtures. This study recommends continued use of AR-GGM mixtures for suitable projects as a reflective cracking mitigation tool. Further, the study recommends continued performance monitoring of the study sections to evaluate the cost-effectiveness of AR-GGM mixtures in comparison with SMA mixtures.
Rubber Modified Asphalt Concrete Overlays
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Author : Thomas F. Van Bramer
language : en
Publisher:
Release Date : 1997
Rubber Modified Asphalt Concrete Overlays written by Thomas F. Van Bramer and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1997 with Asphalt concrete categories.
Use Of Waste Materials In Hot Mix Asphalt
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Author : H. Fred Waller
language : en
Publisher: ASTM International
Release Date : 1993
Use Of Waste Materials In Hot Mix Asphalt written by H. Fred Waller and has been published by ASTM International this book supported file pdf, txt, epub, kindle and other format this book has been release on 1993 with Asphalt emulsion mixtures categories.
In light of requirements that rubber be mixed with any asphalt used in projects receiving federal aid beginning in 1994, and the general increase in the problem of what to do with waste material, 17 papers from a December 1992 symposium in Miami discuss some of the technical and economic considerati
The National Highway System And Ancillary Issues Relating To Highway And Transit Programs
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Author : United States. Congress. House. Committee on Public Works and Transportation. Subcommittee on Surface Transportation
language : en
Publisher:
Release Date : 1994
The National Highway System And Ancillary Issues Relating To Highway And Transit Programs written by United States. Congress. House. Committee on Public Works and Transportation. Subcommittee on Surface Transportation and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1994 with Business & Economics categories.
Significant Findings From Full Scale Accelerated Pavement Testing
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Author : Frederick Hugo
language : en
Publisher: Transportation Research Board
Release Date : 2004
Significant Findings From Full Scale Accelerated Pavement Testing written by Frederick Hugo 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 2004 with Accelerated life testing categories.
TRB's National Cooperative Highway Research Program (NCHRP) Synthesis 325: Significant Findings from Full-Scale Accelerated Pavement Testing documents and summarizes the findings from the various experimental activities associated with full-scale accelerated pavement testing programs.
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.
A Manual For Design Of Hot Mix Asphalt With Commentary
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Author :
language : en
Publisher: Transportation Research Board
Release Date : 2011
A Manual For Design Of Hot Mix Asphalt With Commentary written by 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 2011 with Asphalt concrete categories.
Engineering Properties Of Asphalt Mixtures And The Relationship To Their Performance
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Author : Gerald A. Huber
language : en
Publisher: ASTM International
Release Date : 1995
Engineering Properties Of Asphalt Mixtures And The Relationship To Their Performance written by Gerald A. Huber and has been published by ASTM International this book supported file pdf, txt, epub, kindle and other format this book has been release on 1995 with Asphalt emulsion mixtures categories.
Thirteen papers presented at the conference on [title], held in Phoenix, Arizona, December, 1994, discuss the products of the strategic highway research program, the Superpave method of mix design, and test methods for fatigue cracking and permanent deformation. Lacks an index. Annotation c. by Book
Progress Of Superpave Superior Performing Asphalt Pavement
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Author : Robert N. Jester
language : en
Publisher: ASTM International
Release Date : 1997
Progress Of Superpave Superior Performing Asphalt Pavement written by Robert N. Jester and has been published by ASTM International this book supported file pdf, txt, epub, kindle and other format this book has been release on 1997 with Asphalt categories.
A major result of the research conducted under the Strategic Highway Research Program from 1987 to 1993 was the development of the Superpave (Superior Performing Asphalt Pavement) system for the comprehensive design of asphalt pavements. These 14 contributions describe the experience to date in the
Uses Of Recycled Rubber Tires In Highways
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Author : Jon A. Epps
language : en
Publisher: Transportation Research Board
Release Date : 1994
Uses Of Recycled Rubber Tires In Highways written by Jon A. Epps 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 1994 with Technology & Engineering categories.
This synthesis on the use of recycled rubber tires in highways will be of interest to administrators and policy-makers; pavement, materials, geotechnical, environmental, and traffic operations engineers; and research engineers involved with highway design and construction issues. Information is provided on the uses of rubber tires in asphalt paving materials as well as other uses, such as on fills and embankments, for erosion control and on railroad grade crossings. Specifically, information is included which identifies the agencies using or implementing applications for recycled rubber tires and defines the design parameters, technical and construction limitations, performance, costs, benefits, environmental limitations, specifications, and availability. This synthesis of information defines the use of recycled rubber tires in highways and is based on a review of nearly 500 references and on information recorded from state highway agency responses to a 1991 survey of practice. Updates are included for as much of the state practice information possible through 1993. The use of scrap tires for highway applications is dynamic with regard to policy and technical issues. Therefore, the reader should keep in mind that the information presented reflects the best available data at a particular time. The synthesis also identifies current research in the topic area, critical research needs, and legislative issues that affect application and use of recycled rubber tires.