Abstract
A new fatigue failure criterion of asphalt mixes which is applicable even at low stiffness modulus under high temperature or low loading speed is proposed. It is found that the dissipated energy per cycle per unit volume in asphalt mix at the instant of fatigue failure can be a rational failure criterion. Then the fatigue failure envelope based on experimental results at high and medium stiffness modulus is adjusted at the low stiffness region. And also it is found that the fatigue damages of asphalt pavement can be neglected under high temperature or low vehicle speed. The validity of the new criterion is verified by comparing with other proposed failure criteria and some field data obtained by public road administrators.
