The thin film oven test and the rolling thin film oven test are widely used to simulate the asphalt hardening that occurs in hot-mix plants. Using nine road-collected hot-mix samples and the corresponding tank asphalts, a comparison is made between the oven tests and the hot mix. Comparisons are made on the basis of viscosity at 60 deg C and 135 deg C, penetration at 25 deg C, infrared analysis, and gel permeation chromatography. In general, the two oven tests are in close agreement for all parameters at standard test times. However, if the times are extended, they may diverge. The recovered hot-mix asphalt is generally more aged than the oven-aged material with respect to all parameters although less so with viscosity. The infrared spectra show much greater change in the hot-mix than in the oven-aged material. The hot-mix operation also produces highly oxidized material that is not usually removed from the aggregate in the extraction operation.

Media Info

  • Features: Figures; References; Tables;
  • Pagination: p. 77-84
  • Monograph Title: Asphalt mix materials, 1991
  • Serial:

Subject/Index Terms

Filing Info

  • Accession Number: 00622191
  • Record Type: Publication
  • ISBN: 0309051630
  • Files: TRIS, TRB, ATRI
  • Created Date: May 31 1992 12:00AM