EFFECT OF REST PERIODS ON FATIGUE RESPONSE OF ASPHALT CONCRETE MIXTURES

The authors investigate the effect of rest periods on the fatigue response of asphalt concrete mixtures under repeated loading applications by using linear elastic fracture mechanics and Schapery's theory of viscoelastic media crack growth. A series of third-point bending tests reveal that two fatigue damage properties--K1 and K2--are in good agreement with the theoretical predictions, expressing the constant values of failure zone size and fracture energy in the crack growth. Samples with low temperature and asphalt content of 0.5 percent more than optimum content displayed longer fatigue life due to the higher stiffness in the mixtures. Longer rest periods and higher temperatures resulted in an increased number of repetitions to failure.

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  • English

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Filing Info

  • Accession Number: 00726108
  • Record Type: Publication
  • Files: TRIS, ATRI
  • Created Date: Sep 25 1996 12:00AM