高模量沥青及沥青混合料性能研究

Research on Performance of High Modulus Asphalt and Asphalt Mixture

采用低标号硬质沥青与基质沥青按照一定比例调和出高模量沥青,研究了高模量沥青的流变性能,并对调和制得的高模量沥青混合料的高温性能、水稳定性和疲劳性能进行了试验研究。研究表明:低标号硬质沥青掺量为40%时,制备得到的沥青符合高模量沥青的相关指标;制备得到的高模量沥青高温性能优于SBS掺量为4%的改性沥青,高模量沥青混合料的高温性能、水稳定性和抗疲劳性能均良好。

In this study,the high modulus asphalt is prepared by blending low grade hard asphalt with base asphalt in a certain proportion,the rheological properties of high modulus asphalt are studied,and the high temperature performance,water stability and fatigue performance of the high modulus asphalt mixture are tested.The results show that when the content of low grade hard asphalt is 40%,the asphalt prepared meets the relevant indexes of high modulus asphalt,and the high temperature performance of the high modulus asphalt prepared is better than the modified asphalt with 4%SBS content,and the high modulus asphalt mixture has good high temperature performance,water stability and fatigue performance.