高性能冷铺薄层罩面混合料优化设计与路用性能研究

Study on Optimal Design and Road Performance of High-performance Cold Paving Thin-layer Cover Mixture

为了解决沥青路面预防性养护技术中抗滑性、耐久性不足的问题,提出了一种新型高性能冷铺薄层罩面技术。同时采用McLeod方法确定了集料撒布量,采用湿轮磨耗试验和负荷轮黏砂试验确定了乳化沥青的最佳涂布量,参照渗水系数确定了纳米封面剂的酒布量,并对高性能冷铺薄层罩面混合料的早期强度、层间粘结强度、抗滑性和耐久性进行了研究。

In order to solvethe problem of the lacking of skid resistance and durability of preventive maintenance technology of asphalt pavement,a new high-performance cold paving thin-layer cover technology is proposed.The amount of stone is determined by McLeod method.The coating amount of emulsified asphalt is determined by wet wheel wear test and load wheel sand bonding test.The spraying amount of nano cover agent is determined with reference to the water permeability coefficient.The early strength,interlayer adhesion strength,skid resistance and durability of the high-performance cold paving thin-layer cover mixture are studied.