The determination of the fatigue characteristics of pavement materials is necessary for the design and evaluation of highway and airport pavements. This paper summarizes the findings of a study in which the controlled-stress, repeated-load indirect tensile test was used to investigate the fatigue characteristics of asphalt mixtures. The logarithmic relationships between fatigue life and both applied stress and initial mixture strain were evaluated and found to be linear. In addition, linear relationships were found between n sub 1 and the logarithm of K sub 1 for the strain-fatigue life relationships and between n sub 2 and the logarithm of K sub 2 for the stress-fatigue life relationships. The effects on fatigue life produced by load, asphalt content, aggregate type, and testing temperature are discussed. Fatigue life could not be estimated from only applied stress or stress difference; however, equations relating life to both the initial mixture strain and the stress-strength ratio were developed. From this study it was concluded that the repeated-load indirect tensile test is suitable for evaluating the fatigue characteristics of asphalt mixtures.

Media Info

  • Media Type: Print
  • Features: Figures; References; Tables;
  • Pagination: pp 25-33
  • Monograph Title: Asphalts, aggregates, mixes and stress-absorbing membranes
  • Serial:

Subject/Index Terms

Filing Info

  • Accession Number: 00148654
  • Record Type: Publication
  • ISBN: 0309025648
  • Files: TRIS, TRB
  • Created Date: Mar 30 1977 12:00AM