Study on Influence of High Modulus Modifier on Pavement Performance of Asphalt Concrete
In this paper,the influence of high modulus agent dosage on the high and low temperature performance of asphalt mixtures firstly were analyzed,and the optimal high modulus agent dosage was determined;Finally,the high and low temperature performance and water sta-bility of high modulus modified SMA asphalt mixture were evaluated.Research has shown that with the increase of high modulus agent dosage,the dynamic stability of asphalt mixture first increases rapidly and then stabilizes,and the stiffness modulus first increases and then decreases.The optimal high modulus agent dosage is 11%.Compared with ordinary mixtures,the road performance of high modulus SMA mixtures is sig-nificantly improved,with a dynamic stability increase of 179%,a stiffness modulus increase of 11.5%,and a failure strain increase of 15.5%;The increase in residual stability is 7.8%;The increase in freeze-thaw splitting strength ratio is 9.3%.
国家科技期刊平台
NSTL
万方数据
