Road performance of stress absorbing layers in asphalt mixture

This paper carried out the bending beam test on the materials in stress absorbing layers of Sampave asphalt,analyzed the influences of asphalt binder on anti-cracking performance,carried out the tensile and tension-compression fatigue tests on the materials in stress absorbing layers with the different asphalts,and then evaluated the influences of asphalt binder on anti-tensile and fatigue performances.The results show that Sampave asphalt mixture has a better performance for preventing cracks under low temperature and also for resisting tension-compression fatigue.But the performance of SBR asphalt is lower than the one of asphalt binder in stress absorbing layers.5 tabs,2 figs,11 refs.