湖沥青/丁苯橡胶复合改性沥青性能试验研究  

Experimental Study on Performance of Lake Asphalt/Styrene Butadiene Rubber Composite Modifi ed Asphalt

作　　者：董红锋 DONG Hong-feng(Zhengzhou Road and Bridge Construction and Investment Group Co.,Ltd.,Zhengzhou 450000,Henan,China)

机构地区：[1]郑州路桥建设投资集团有限公司,河南郑州450000

出　　处：《合成材料老化与应用》2023年第4期44-46,59,共4页Synthetic Materials Aging and Application

摘　　要：通过沥青三大指标和旋转黏度等常规性能试验和DSR、BBR流变试验以及老化试验对TLA/SBR复合改性沥青的性能进行测试,试验结果表明:TLA和SBR能提高沥青的高温抗剪切变形和抗疲劳性能,SBR可以改善沥青的低温抗裂性,但TLA对沥青低温性能产生不利影响;综合复合改性沥青各方面性能,推荐复合改性沥青最佳用量组合为3%SBR+20%TLA。The performance of TLA/SBR composite modified asphalt was tested through the three major indicators of asphalt,conventional performance tests such as rotational viscosity,and rheological performance tests such as DSR,BBR,and aging tests.The test results show that TLA and SBR can improve the high temperature shear deformation resistance and fatigue resistance of asphalt,and SBR can improve the low temperature crack resistance of asphalt,but TLA has adverse effects on the low temperature performance of asphalt;Based on the comprehensive performance of composite modified asphalt in all aspects,it is recommended that the best combination of composite modified asphalt is 3%SBR+20%TLA.

关 键 词：TLA SBR 复合改性沥青 沥青性能 

分 类 号：U414[交通运输工程—道路与铁道工程]