CUMULATIVE DAMAGE OF ASPHALT MATERIALS UNDER REPEATED-LOAD INDIRECT TENSION

This report summarizes the results of an investigation of the applicability of Miner's Hypothesis to the fatigue data which were obtained using the dynamic indirect tensile test. Relationships between fatigue life and stress were established for simple-loading fatigue data from which Miner's Hypothesis could be verified for compound-loading fatigue life prediction. The hypothesis was evaluated experimentally by conducting compound-loading fatigue tests in which two stress levels were used. In addition, it was shown that it was possible to predict the permanent deformations which occur under two-level compound loading conditions from the simple summation of damage increments from simple-loading permanent deformation curves. Statistical estimates of the fatigue life of the asphalt mixtures investigated are presented for both the simple-loading and compound-loading test series.

  • Supplemental Notes:
    • Prepared in cooperation with Texas Highway Dept., Austin. Planning and Research Div.
  • Corporate Authors:

    University of Texas, Austin

    Center for Highway Research, 200 West 21st Street
    Austin, TX  USA  78712

    Federal Highway Administration

    1200 New Jersey Avenue, SE
    Washington, DC  USA  20590

    Texas State Department of Highways & Public Transp

    Division of Planning and Research, P.O. Box 5051
    Austin, TX  USA  78763
  • Authors:
    • Cowher, C E
    • Kennedy, T W
  • Publication Date: 1975-1

Media Info

  • Pagination: 234 p.

Subject/Index Terms

Filing Info

  • Accession Number: 00094147
  • Record Type: Publication
  • Source Agency: National Technical Information Service
  • Report/Paper Numbers: CFHR-3-9-72-183-3 Res. Rept., FHWA/RD-76/S0438
  • Files: NTIS, TRIS, USDOT, STATEDOT
  • Created Date: Mar 29 1976 12:00AM