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.
- Prepared in cooperation with Texas Highway Dept., Austin. Planning and Research Div.
University of Texas, AustinCenter for Highway Research, 200 West 21st Street
Austin, TX USA 78712
Washington, DC USA 20590
Texas State Department of Highways & Public TranspDivision of Planning and Research, P.O. Box 5051
Austin, TX USA 78763
- Cowher, C E
- Kennedy, T W
- Publication Date: 1975-1
- Pagination: 234 p.
- TRT Terms: Accelerated tests; Asphalt; Asphalt mixtures; Base course (Pavements); Deformation; Fatigue (Mechanics); Forecasting; Hypothesis testing; Loads; Loss and damage; Pavements; Repeated loads; Statistical analysis; Stresses; Tension; Tension tests
- Uncontrolled Terms: Fatigue life; Hypothesis
- Old TRIS Terms: Indirect tension
- Subject Areas: Data and Information Technology; Highways; Pavements;
- 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