CORRESPONDENCE PRINCIPLE FOR CHARACTERIZATION OF ASPHALT CONCRETE

The authors introduce Schapery's nonlinear elastic-viscoelastic correspondence principle as a means of separately evaluating important mechanisms of asphalt concrete under cyclic loading, including time dependence, damage growth, and fracture healing. The authors' work and the findings of previous studies demonstrate that the correspondence principle, which is based on pseudostrain concept, can be applied to most of the testing conditions encountered in testing of asphalt concrete. The importance of using proper analytical representation of relaxation modulus in the course of calculating pseudostrain is illustrated using cyclic data. At the loading frequencies typically used in asphalt concrete testing, the representation of creep or relaxation must be in a form that can describe accurately the short time behavior, such as the modified power law. The authors conclude that the correspondence principle offers a means of more accurately modeling the damage growth and fracture healing of asphalt concrete under complex cyclic loading.

Language

  • English

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  • Accession Number: 00675546
  • Record Type: Publication
  • Files: TRIS
  • Created Date: Mar 29 1995 12:00AM