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The National Academies

NCHRP 20-07/Task 058 [Completed]

Information and Evaluation of Asphalt Rubber Research
[ NCHRP 20-07 (Research for AASHTO Standing Committee on Highways) ]

  Project Data
Funds: 182011
Research Agency: University of Nevada - Reno
Effective Date: 11/29/1993
Completion Date: 3/31/1996

Task 58, FY 1994, "Information and Evaluation of Asphalt Rubber Research" (Jon Epps, University of Nevada - Reno). A provision in the Intermodal Surface Transportation and Efficiency Act of 1991 (ISTEA), requires state highway agencies to construct pavements with asphalt rubber, and there was a mandate for research in this area. Research was being done by FHWA and a pooled-funds effort focused specifically on asphalt rubber had been initiated. AASHTO member departments needed information on the scope of these FHWA research efforts as well as any other efforts in the area of asphalt rubber research. At its September 9-10, 1992, meeting the AASHTO Standing Committee on Research decided to earmark $100,000 for this task to hire an agency to look at the ongoing research efforts in the area of asphalt rubber, keep the states informed, and seek research gaps that could be filled by NCHRP or other research projects. In addition to monitoring studies on engineering issues related to pavement performance, specific interest was focused on research into the environmental and health considerations in recycling asphalt pavements containing rubber. The University of Nevada - Reno distributed Crumb Rubber Modifier (CRM) New Briefs and CRM Updates. A database of all literature on rubber tire usage in highways was developed, advertised, and is available for use. Two workshops were held and a research agenda for CRM was developed. The task is complete. The final report was distributed to the state departments of transportation and AASHTO.

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