Optimum Design of Mix Ratio of Drainage Asphalt Mixture
In order to optimize the design of drainage asphalt mixture,based on the structure type of the existing drainage asphalt mix-ture,this paper considers the ore gradation and then carries on the drainage asphalt mixture mix design.The test gradation is A,the oil stone ratio is4.9%,and its road performance is studied.It can be seen from the test results that compared with SBS modified asphalt mixture,the dynamic stability of the optimized drainage asphalt mixture increases by 12.7%,the freeze-thaw splitting strength increa-ses by2.7%,and the maximum stretching strain increases by3.8%.The optimized drainage asphalt mixture has good performance of high temperature,low temperature and water stability.
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