CHEMICAL AND PHYSICAL PROPERTIES OF ASPHALT-RUBBER MIXTURES--PHASE III, VOLUME 1--EFFECTS OF RUBBER TYPE, CONCENTRATION, AND ASPHALT

This study had the objectives of (1) evaluating the effects of major components, rubber and asphalt, on physical properties of asphalt-rubber mixtures, and (2) evaluating the feasibility of using testing procedures studied for specifying asphalt-rubber mixtures. Forty-eight different asphalt-rubber mixtures formulated with six different rubber types at four concentrations with two asphalts were tested. Testing procedures utilized included absolute viscosity at 140F, Schweyer Rheometer and force-ductility at 39.2F, sliding plate microviscometer at 32.0F, and viscosity by the Torque-Fork and Haake viscometer during mixing at 375F. All mixtures were produced in a Torque-Fork mixer at 375F using a 1 hour mixing duration. A total of 31 measured or calculated parameters are reported and discussed. The study concluded that physical properties of asphalt-rubber mixtures can vary widely depending on rubber type, rubber concentration, asphalt grade, and interactions between component materials. The force-ductility and sliding plate microviscometer tests yielded several parameters with testing variability low enough to permit use in specifying asphalt-rubber physical properties. (FHWA)

• Supplemental Notes:
  • The entire report is also available from NTIS as a set, PB83-121798. See also Volume 2, PB83-121822.
• Corporate Authors:

  Western Technologies, Incorporated

  3737 East Broadway Road
  Phoenix, AZ  United States  85036

  Arizona Department of Transportation

  206 South 17th Avenue
  Phoenix, AZ  United States  85007

  Federal Highway Administration

  1200 New Jersey Avenue, SE
  Washington, DC  United States  20590
• Authors:
  • Rosner, J C
  • Chehovits, J G
• Publication Date: 1982-4

Media Info

• Pagination: 612 p.

Subject/Index Terms

• TRT Terms: Asphalt mixtures; Chemical properties; Ductility tests; Physical properties; Rubberized bitumen; Specifications; Test procedures; Testing equipment; Viscosity
• Uncontrolled Terms: Asphalt grading
• Old TRIS Terms: Ductility tests (Asphalts); Viscosity test
• Subject Areas: Highways; Materials; I31: Bituminous Binders and Materials;

Filing Info

• Accession Number: 00368291
• Record Type: Publication
• Report/Paper Numbers: FHWA/AZ-82/159/1 Final Rpt.
• Contract Numbers: 1-19(159)
• Files: TRIS, USDOT, STATEDOT
• Created Date: Dec 30 1990 12:00AM