Effect of Asphalt Mortar on High and Low Temperature Performance of Asphalt Mixture 

Brown ER 

University of Newcastle, 21401,Annapolis 

Abstract: In the design of asphalt mixture, the effect of asphalt mortar in asphalt mixture is fuzzy, and the effect of asphalt mortar is not enough. According to the theory of mortar, asphalt binder should be regarded as an important part of asphalt mixture, and the influence of the ratio of powder to rubber and the high and low temperature performance of asphalt mixture were studied. The results show that the performance of asphalt mixture is affected not only by the amount of asphalt and the amount of filler, but also by the relative ratio of filler and asphalt. In the design of asphalt mixture should pay attention to the actual engineering design and control. In the asphalt mixture design but less than rubber powder, adding fiber, it can significantly improve the asphalt mixture at low temperature flexible low temperature relaxation ability, but also make the high temperature performance of asphalt mixture can be greatly improved. 

Keywords: Road engineering; Asphalt mortar; Powder to binder ratio; Fiber; Asphalt mixture; Road performance