Results to date (Fall 1996) from the Caltrans Accelerated Pavement Testing (CAL/APT) Program are discussed and include those for the Phase I program and initial results from the Phase II program. The Phase I program involved a study of the comparative performance under Heavy-Vehicle-Simulator (HVS) loading of Caltrans dense-graded asphalt concrete (DGAC) and asphalt-rubber, hot mix, gap-graded (ARHM-GG) as overlays on a fatigue-cracked asphalt pavement and an evaluation of pavement rutting from channelized traffic resulting from simulated Automated Vehicle Control Systems (AVCS). The initial part of the Phase II program includes an evaluation, under HVS loading, of the performance of two pavements, one containing an asphalt-treated permeable base (ATPB) and the other an aggregate base (AB), designed and constructed according to Caltrans procedures. The HVS testing of pavements for the Phase I program was performed in South Africa while the Phase II program is being conducted at the University of California at Berkeley (UCB) Richmond Field Station. Laboratory tests have been performed for both phases at UCB involving evaluations of the stiffness and permanent deformation characteristics of the various pavement components and fatigue characteristics of the asphalt mixes. These results have been used to analyze the performance of the HVS-loaded pavements. By combining the results of both the HVS and laboratory tests, interpretations of pavement performance are described and recommendations for pavement design and construction have been made to Caltrans.

  • 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:
    • Nokes, W A
    • Harvey, J T
    • du Plessis, L
    • Long, F
    • Stolarski, P J
  • Conference:
  • Publication Date: 1997


  • English

Media Info

  • Features: Figures; Photos; References; Tables;
  • Pagination: p. 1053-72

Subject/Index Terms

Filing Info

  • Accession Number: 00764711
  • Record Type: Publication
  • Report/Paper Numbers: Volume II
  • Files: TRIS, ATRI
  • Created Date: Jun 14 1999 12:00AM