水性环氧树脂乳化沥青对开级配抗滑磨耗层性能的影响

为了提高现有黏结材料的黏结性能,进而改善开级配抗滑磨耗层的抗滑耐磨性,制备不同掺量的水性环氧树脂乳化沥青,通过基本性能试验与黏结性能试验,确定水性环氧树脂的最佳掺量;借助荷载磨耗试验,研究了不同黏结材料对开级配抗滑磨耗层(OGFC-5)抗滑性能与抗剥落性能的影响。结果表明:添加水性环氧树脂可有效地改善乳化沥青的高低温性能与黏结性能,最佳掺量为20%;经20000次荷载作用后,水性环氧树脂抗滑磨耗层的抗滑性能与抗剥落性能最好,摩擦系数降幅为28.57%,构造深度降幅为33.33%,质量剥落率最低为3.25%。

Effect of Waterborne Epoxy Emulsified Asphalt on Performance of Open-graded Skid-resistant Wearing Course

In order to improve the bonding performance of the existing bonding materials,so as to enhance the skid and abrasion resistance of the open-graded skid-resistant wearing course,emulsified asphalt was prepared with different amounts of waterborne epoxy.Through the tests on basic performance and bonding performance,the optimal amount of waterborne epoxy was determined.Based on the load abrasion test,the effects of different bonding materials on the skid and stripping resistance of the open-graded skid-resistant wearing course(OGFC-5)were studied.The results show that the addition of waterborne epoxy can effectively improve the performance at high and low temperature and the bonding performance of the emulsified asphalt,and the optimal amount is 20%;after 20000 times of loading,the open-graded skid-resistant wearing course with waterborne epoxy has the best skid and stripping resistance,with the coefficient of friction decreasing by 28.57%,the structural depth decreasing by 33.33%,and the lowest mass stripping rate being 3.25%.