Abstract：To investigate the effects of polyester fiber and RET on the performance of asphalt mixture, high temperature stability, low temperature crack resistance and anti-fatigue performance of RET modified asphalt mixture with polyester fiber were evaluated through penetration shear test, semi-circular bending test and bending fatigue test. Penetration shear strength,fracture energy density and fatigue life were compared with those of SBS and SBR modified asphalt mixture. The fatigue properties of different asphalt mixtures were analyzed by Weibull distribution under different failure probabilities. The results show that compared with SBS and SBR modified asphalt mixture, the penetration shear strength, the fracture energy density and the fatigue life of composite modified asphalt mixture are increased significantly. RET and polyester fiber can significantly improve high temperature stability of asphalt mixture, and the low temperature performance of RET modified asphalt mixture can be effectively improved. The polyester fiber composite RET has significant effect on the fatigue property of asphalt mixture.
2017, Vol. 38 
