Research on Permanent Deformation of Asphalt Mixture by Triaxial Repeated Load Test

Abstract

Triaxial repeated load permanent deformation tests of AC13F, AC13C, AC16 and AC20 under interim haversine loading were conducted. The flow number was selected as an evaluation index to investigate the influences of asphalt mixture characteristic including gradation, asphalt content, air voids, stress and temperature on the high-temperature performance of asphalt mixture. It is indicated that (1) flow number of AC16 is the highest, then is that of AC13C, but the AC13F and AC20 have the smaller ones; (2) with asphalt content increases by 0.5%, the flow number decreases by