基于岩沥青与硅烷偶联剂复合改性的沥青性能研究

Study on Properties of Asphalt Based on Composite Modification of Rock Asphalt and Silane Coupling Agent

摘要: 研究通过在基质沥青中加入岩沥青、硅烷偶联剂对沥青进行改性，并对70-A道路石油沥青、0.3%硅烷偶联剂改性沥青、5%岩改沥青、偶岩复合改性沥青(0.3%硅烷偶联剂 + 5%青川岩沥青复合改性沥青)的常规性能指标、流变性能指标及其与花岗岩沥青的黏附性能进行试验，分析了几种沥青的高低温性能及其应用于花岗岩沥青混合料的可行性。结果表明，偶岩复合改性沥青可以有效改善沥青的高温性能和低温性能及其与花岗岩集料的黏附性能。

Abstract: The asphalt was modified by adding rock asphalt and silane coupling agent into the base asphalt, and the conventional performance indexes of 70-a road petroleum asphalt, 0.3% silane coupling agent modified asphalt, 5% rock modified asphalt and even rock composite modified asphalt (0.3% silane coupling agent + 5% Qingchuanyan asphalt composite modified asphalt) were studied The rheological property index and its adhesion to granite asphalt are tested, and the high and low temperature properties of several asphalt and the feasibility of applying them to granite asphalt mixture are analyzed. The results show that the dual rock composite modified asphalt can effectively improve the high-temperature and low-temperature properties of asphalt and its adhesion to granite aggregate.