高掺量橡胶改性沥青的疲劳性能试验研究

Experimental Study on Fatigue Properties of High Content Rubber Modified Asphalt

为分析高掺量橡胶改性沥青疲劳性能,文中对34%、38%和42%高掺量下橡胶与2%和3%掺量下SBS改性沥青的动态剪切流变性能、低温性能、热氧化性能和疲劳性能进行研究。结果表明,42%橡胶和3%SBS掺量下改性沥青抗变形能力和低温性能最优,高掺量橡胶沥青的疲劳寿命更长、敏感程度较低。

In order to analyze the fatigue properties of high content rubber modified asphalt,the dynamic shear rheological properties,low tem-perature properties,thermal oxidation properties and fatigue properties of rubber modified asphalt at 34%,38%and 42%high content and SBS modified asphalt at 2%and 3%content were studied.The results show that the modified asphalt with 42%rubber and 3%SBS has the best deformation resistance and low temperature performance.The fatigue life of high content rubber asphalt is longer and the sensitivity is lower.