VALIDATION OF SOME SUPERPAVE DESIGN PARAMETERS BY WHEEL TESTING WITH THE SCALE MODEL MOBILE LOAD SIMULATOR

The validation of SUPERPAVE has become an important issue. The SUPERPAVE parameters selected for validation were aggregate grading and Fine Aggregate Angularity. The Model Mobile Load Simulator (MMLS) and a Simple Shear Tester (SST) were used for the validation. The results of these tests are compared with South African specification tests. It was concluded that it is difficult to design a fine aggregate mix which satisfies the SUPERPAVE level 1 requirements for low design traffic. Small variations in the nominal maximum aggregate size of a mix may change the restricted zone of that mix. The result of this for a particular mix tested was that it passed through the restricted zone but performed well nonetheless. Fine Aggregate Angularity had a significant effect on the rutting susceptibility of a mix tested. This effect, while apparent under MMLS loading, was less apparent in the results of dynamic creep and SST testing. The dynamic creep and SST tests were found to be performance indicators. These tests, however, should be supported by actual performance tests, such as the MMLS test.

  • Supplemental Notes:
    • This conference was arranged by the International Society for Asphalt Pavements. The ninth conference will be held in Copenhagen, Denmark in August 2002.
  • Corporate Authors:

    University of Washington, Seattle

    Department of Civil and Environmental Engineering, P.O. Box 352700
    Seattle, WA  United States  98195-2700
  • Authors:
    • van de Ven, M
    • Smit, A de F
    • Lorio, R
    • McGennis, R
  • Conference:
  • Publication Date: 1997

Language

  • English

Media Info

  • Features: Figures; References; Tables;
  • Pagination: p. 1245-56

Subject/Index Terms

Filing Info

  • Accession Number: 00764721
  • Record Type: Publication
  • Report/Paper Numbers: Volume II
  • Files: TRIS, ATRI
  • Created Date: Jun 15 1999 12:00AM