摘要
Abstract
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%.关键词
道路工程/SMA沥青混合料/高模量改性剂/路用性能Key words
Road engineering/SMA asphalt mixture/High modulus modifier/Road performance分类
交通工程
