Effects of USP modifier on the pavement performance of asphalt mixture
In order to explore the effect of USP modifier on the pavement performance of asphalt mixture,USP modified asphalt and USP/SBS composite modified asphalt were prepared by using 4%and 4.5%USP modifier respectively.Through the research on the road performance of USP modified asphalt mixture and USP/SBS composite modified asphalt mixture,the high temperature stability,low temperature crack resistance and water stability of USP modifier to asphalt mixture were evaluated.The results show that the high temperature performance of USP modified asphalt and USP/SBS composite modified asphalt mixture is greatly improved,and the water stability and low temperature performance also meet the requirements of the specification,but the low temperature performance decreases slightly.