The effect of environment temperature on the high temperature stabilities of asphalt mixture

It presents the rutting test results of unmodified bitumen and modified bitumen at different temperatures.The conclusion is that the environments temperature affects the high temperature stability of asphalt mixture remarkably and the dynamic stabilities of asphalt mixture decline rapidly when the temperature of pavement beyonds the bituminous softening point.So the softening point is one of the primary index selecting bituminous sorts in pavement project,meanwhile improving the bituminous softening point and declining the pavement surface temperature are effective approaches to modify the rutting-resistance abilities of asphalt concrete pavement.