Study on Road Performance of Basalt Fiber-Rock Asphalt Mixture Based on Response Surface Method
To improve the road performance of asphalt mixture pavement and effectively resolve the adverse effect of rock asphalt on the low temperature crack resistance of mixture,this study used the Response Surface Method,and based on Hamburg rutting test,immer-sion Marshall test,freeze-thaw splitting test,low temperature trabecular bending test and four-point bending fatigue test,the road performance and fatigue resistance of the mixture under different basalt fiber and rock asphalt content were evaluated.The results show that the composite reinforcement of basalt fiber and rock asphalt can significantly improve the high temperature performance,water sta-bility and fatigue resistance of asphalt mixture.Through the design prediction of the Response Surface Method,the optimal mixing ratios of basalt fiber and rock asphalt are 0.495%and 7.6%,respectively.The experimental verification shows that the calculation accuracy between the predicted value and the measured value is greater than 98%.Under this optimal mixing ratio,the asphalt mixture shows excellent road performance.
asphalt pavementResponse Surface Methodologybasalt fiberXinjiang rock asphaltroad performance
万方数据
维普
