花岗岩集料在沥青路面应用研究进展

为改善酸性花岗岩集料与沥青的黏附性，提升其在沥青路面的应用规模，通过文献调研分析了不同抗剥落剂的黏附机理、花岗岩沥青混合料黏附性、水稳定性的评价方法、路用性能以及应用现状。结果表明:黏附性评价方法实现了定性到定量的转变；水稳定性评价以冻融劈裂为主，抗剥落剂对改善水稳定性、高温稳定性以及低温抗裂性能等路用性能效果存在争议；花岗岩集料主要应用于中下面层，未来应从微细观层次、新型复合抗剥落剂、长期耐久性等方面深入研究。

Research Progress of Application of Granite Aggregate in Asphalt Pavement

In order to improve the adhesion between acidic granite aggregate and asphalt and promote its application scale in asphalt pavement, the adhesion mechanism of different anti-stripping agents, the adhesion of granite asphalt mixture, the evaluation methods of the water stability, the pavement performance as well as its current application situation were investigated and summarized by retrospective research. The result shows that the evaluation method of adhesion realizes the change from qualitative to quantitative scheme, and freeze-thaw splitting is the main method for water stability evaluation. The effect of anti-stripping agent on improving water stability, high temperature stability and low temperature crack resistance remains controversial. In addition, the granite aggregate is mainly used in the middle and lower surface layer of asphalt pavement. In the future, it should be further studied from the aspects of micro-level, new composite anti-stripping agent and long-term durability.