[PDF] Use Of Discarded Tires In Highway Construction eBook

Author : Jon A. Epps
Publisher : Transportation Research Board
Page : 172 pages
File Size : 28,78 MB
Release : 1994
Category : Technology & Engineering
ISBN : 9780309053235

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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 : David Crenshaw Mahone
Publisher :
Page : 19 pages
File Size : 31,96 MB
Release : 1980
Category : Asphalt-rubber
ISBN :

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In August 1978, bituminous surface treatments in which vulcanized rubber was blended with the asphalt cement were placed on two secondary roads by the Sahuaro Petroleum and Asphalt Company and the Whitehurst Paving Company. The work was jointly financed by the Federal Highway Administration and the Virginia Department of Highways and Transportation. The ground rubber from used tires was blended with AC-20 asphalt in amounts ranging from 20% to 22% by weight of the binder, and was applied at a rate of 0.60 to 0.69 gal./ yd.2 The cover aggregate, No. 68 and No. 78 stone, was applied at a rate in excess of 40 lb./yd.2 The adherence of the stone to the binder was excellent on a section of road that was relatively straight, had a good cross section, and received direct rays of the sun for most of the day. It did not adhere well on a section that had a lot of curves and a poor cross section and was in the shade a good deal of the day. The surface treatment did an excellent job of sealing cracks. In addition, it arrested and, in some cases, even remedied pavement distortions. Because the rubberized binder (1) does not flow as regular asphalt does, and (2) can be applied at a relatively high rate, and apparently is effective in sealing cracks, it is believed that it can be used to advantage for sealing pavements and bridge decks. The drawbacks in using the material are its high cost and the extended time required to blend the rubber and asphalt in the field. However, because of its performance over the two-year test period, the Department should consider: (1) further experimentation with the material on some badly cracked bituminous pavements, and (2) experimentation with the material as a bridge deck sealant.

Author : Robert H Snyder
Publisher : SAE International
Page : 174 pages
File Size : 15,95 MB
Release : 1998-03-20
Category : Technology & Engineering
ISBN : 0768036712

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Scrap Tires: Disposal and Reuse details the historical, technological, and economic issues related to the scrap tire industry, and the manner in which the scrap tire problem is addressed. The ultimate solution will be hastened by progress in the establishment of profitable commercial enterprises and markets to utilize scrap tires for their inherent intrinsic value. Scrap Tires provides advice on how scrap tires can be used for fuels, sealants, rubber mats, playground surfaces, equestrian arenas, wastewater treatment plant composts, golf courses, and more. Written from a business perspective, Scrap Tires focuses on the economics of tire recycling, providing valuable advice to individuals or companies. In addition to an exploration of markets, the book describes how tires are chopped, the machinery used in chopping tires, the grinding process, and the engineering properties of tire chips.