DEVELOPMENT AND EVALUATION OF A TESTING DEVICE FOR ACCELERATED AGE HARDENING OF BITUMINOUS MATERIALS. FINAL REPORT

Equipment was designed, constructed, and modified to spray a thin film of asphalt onto the inside surface of Pyrex (Trademark) glass cylinders and to process the coated cylinders in a special forced draft oven system at process temperatures of 85 deg C and 110 deg C. The spray coating unit yielded film thicknesses of 3 to 5 micrometers. The age hardening device circulated hot air through the cylinders while rotating the cylinders to minimize flow and change in film thickness. Other test methods (e.g., TFOT, RTFOT, PAV, and CTO) were used for aging. Their viscosity results were compared to those from the age hardening device. The test results indicated that the PAV and accelerated age hardening device were more effective in producing age hardened asphalt than the other methods. It was recommended that the age hardening device could be substituted for the PAV since it produced hardening only slightly less than the PAV after 20 hours of aging.

  • Corporate Authors:

    University of Florida, Gainesville

    Department of Civil Engineering, P.O. Box 116580
    Gainesville, FL  United States  32611-6580

    Florida Department of Transportation

    Haydon Burns Building, 605 Suwanee Street
    Tallahassee, FL  United States  32301

    Federal Highway Administration

    1200 New Jersey Avenue, SE
    Washington, DC  United States  20590
  • Authors:
    • Ruth, B E
    • Bloomquist, D
    • Wattleworth, T
  • Publication Date: 1995-1

Language

  • English

Media Info

  • Pagination: 144 p.

Subject/Index Terms

Filing Info

  • Accession Number: 00720063
  • Record Type: Publication
  • Source Agency: National Technical Information Service
  • Report/Paper Numbers: FL/DOT/MO-624, WPI 0510624
  • Contract Numbers: C-4141
  • Files: TRIS, USDOT, STATEDOT
  • Created Date: Apr 4 1996 12:00AM