In this study,recycled powder is used as the filler of asphalt concrete,and the improvement effect of recy-cled powder on the fatigue performance of asphalt concrete is analyzed.Firstly,asphaltic concrete is designed by Mar-shall design method,and then its fatigue performance is analyzed by four-point bending fatigue test.The results show that the fatigue life of recycled asphalt concrete is significantly improved.When the mircrostrain is 400～600,the fa-tigue life of recycled asphalt concrete is about 17.4％～48.4％higher than that of ordinary mineral asphalt concrete.At the same time,the double logarithmic linear regression fatigue equation shows that the recycled powder also significant-ly improves the fatigue durability of asphalt concrete.
维普
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