Evaluation of Asphalt-rubber Seal Coats and Interlayers for Rehabilitation of Flexible Pavements PDF Download

Author: Wouter Gulden
Publisher:
ISBN:
Category : Asphalt-rubber
Languages : en
Pages : 24

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Author: Dale S. Decker
Publisher:
ISBN:
Category :
Languages : en
Pages : 88

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Book Description
The design and construction of airfield pavements have not been developed sufficiently to provide pavements that will not crack. Cracking is a response to traffic and environmental conditions or to the construction material. For many years, rubber in several different forms has been added to asphalt with limited success in reducing pavement cracking. This report reviews the efforts to control cracking by incorporating rubber and asphalt for application as membrane interlayers, surface seal coats, crack fillers, and joint sealers. The extensive literature review indicates that conflicting conclusions have been reached regarding varied applications of the asphalt-rubber material. Of the asphalt-rubber products available, those with high percentages of rubber (20 to 30 percent by weight) appear to be the most promising for airfield pavements, although the effectiveness of asphalt-rubber in controlling or reducing pavement cracking has not been conclusively demonstrated. No superiority of one asphalt-rubber product was indicated in the literature. Because of the danger of loose aggregate chips, the literature indicates that chip seal applications should not be used on facilities where loose chips could be a problem. Therefore, the membrane interlayer is the only application of asphalt-rubber that should be considered for military runways at this time.

Author: Kenneth H. Murphy
Publisher:
ISBN:
Category : Asphalt-rubber
Languages : en
Pages : 28

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Author: R. C. Ahlrich
Publisher:
ISBN:
Category : Pavements
Languages : en
Pages : 52

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Author: United States. Congress. House. Committee on Appropriations. Subcommittee on Department of Transportation and Related Agencies Appropriations
Publisher:
ISBN:
Category : United States
Languages : en
Pages : 1174

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Author: United States. Congress. House. Committee on Appropriations. Subcommittee on Department of Transportation and Related Agencies Appropriations
Publisher:
ISBN:
Category : United States
Languages : en
Pages : 1068

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Author: Randy C. Ahlrich
Publisher:
ISBN:
Category : Pavements
Languages : en
Pages : 0

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Book Description
Asphalt-rubber and engineering fabric interlayers have been used to retard reflective cracks in asphalt concrete overlays. These materials have generally performed satisfactorily in warm climates; however, performance in cold climates has been less than desirable. The asphalt-rubber and engineering fabric rehabilitation techniques have been used to retard the reflection of cracks in existing asphalt concrete and portland cement concrete pavements through asphalt concrete overlays. These rehabilitation techniques also decrease the size of cracks that reflect through, thus retarding the amount of water penetrating into the base course and underlying subgrade. Guidance is provided for using asphalt rubber and engineering fabrics to maximize performance in reducing reflective cracking. This study should result in improved performance of overlays and, subsequently, substantial monetary savings to the taxpayers.

Author: Jon A. Epps
Publisher: Transportation Research Board
ISBN: 9780309053235
Category : Technology & Engineering
Languages : en
Pages : 172

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Book Description
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.

Author: Gordon Beecroft
Publisher:
ISBN:
Category : Pavements, Asphalt
Languages : en
Pages : 76

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Book Description

Author: National Cooperative Highway Research Program
Publisher:
ISBN:
Category : Highway engineering
Languages : en
Pages : 416

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Book Description