Optimization of Rubber Asphalt Mixture Gradation based on High Temperature Performance

Xin Yuan

Chongqing Jiaotong University, Chongqing, 400074, China

Abstract: There is a big difference between rubber powder modification and other modified asphalt. The high temperature performance of rubber asphalt mixture depends largely on the mutual intrusion between mineral materials, and the gradation plays an important role in its high temperature performance. Based on the SMA intermittent graded mixture, the high temperature performance of the rubber asphalt was evaluated by adjusting the content of the ore powder and using the rutting test at different temperatures. The results show that the discontinuous graded mixture with 8% mineral powder has the best high temperature stability.

Keywords: Rubber asphalt mixture; Intermittent graded; Mineral powder; Temperature; Rutting test