A REVIEW OF CRUMB-RUBBER MODIFIED ASPHALT CONCRETE TECHNOLOGY. RESEARCH REPORT

This study presents an analysis of the characteristics of crumb-rubber modified (CRM) asphalt pavements. It is comprised of a state-of-the-art literature review and laboratory testing conducted with a Brookfield viscometer. The reaction that occurs between the rubber and asphalt is not a chemical reaction, but rather a diffusion process that includes the physical absorption of aromatic oils from the asphalt into the polymer chain of the rubber. The presence of CRM in asphalt produces a thicker binder, which increases aging and oxidation resistance. The presence of carbon black in CRM improves binder durability. The temperature susceptibility of the mix is reduced, causing more uniform fatigue characteristics. CRM applications have met with various degrees of success because existing quality control and quality assurance methods have not been developed enough to ensure desired binder properties in the field.

  • Record URL:
  • Corporate Authors:

    Washington State University, Pullman

    Washington State Transportation Center
    Pullman, WA  United States  99164

    Washington State Department of Transportation

    Transportation Building, 310 Maple Park Avenue SE, P.O. Box 47300
    Olympia, WA  United States  98504-7300

    Federal Highway Administration

    1200 New Jersey Avenue, SE
    Washington, DC  United States  20590
  • Authors:
    • Papagiannakis, A T
    • Lougheed, T J
  • Publication Date: 1995-11

Language

  • English

Media Info

  • Features: Figures; References; Tables;
  • Pagination: 111 p.

Subject/Index Terms

Filing Info

  • Accession Number: 00720104
  • Record Type: Publication
  • Report/Paper Numbers: WA-RD 379.1, Res Proj T9902, Task 9
  • Files: TRIS, ATRI, USDOT, STATEDOT
  • Created Date: Apr 9 1996 12:00AM