硅藻土/玄武岩纤维复合改性沥青混合料性能试验研究

Experimental Study on Performance of Diatomite/Basalt Fiber Composite Modified Asphalt Mixture

通过一系列室内试验研究了硅藻土/玄武岩纤维复合改性沥青混合料的路用性能,试验结果表明:硅藻土和玄武岩纤维都可以改善沥青混合料的高温、低温性能,硅藻土作用更显著;玄武岩纤维对沥青混合料的水稳定性产生不利影响,但加入硅藻土后水稳定性有明显改善。综合复合材料的各方面性能,硅藻土/玄武岩纤维具有良好的高温稳定性、低温抗裂性和抗水损害性能,为硅藻土/玄武岩纤维复合改性沥青混合料在沥青路面的实践应用提供参考。

The road performance of diatomite/basalt fiber composite modified asphalt mixture was studied through a series of indoor tests.The test results show that both diatomite and basalt fiber can improve the high temperature and low temperature performance of asphalt mixture,and the effect of diatomite is more significant.Basalt fiber has adverse effect on the water stability of asphalt mixture,but the water stability is obviously improved after adding diatomite.The diatomite/basalt fiber has good high temperature stability,low temperature crack resistance and water damage resistance,which provides reference for the practical application of diatomite/basalt fiber composite modified asphalt mixture in asphalt pavement.