废旧橡胶颗粒沥青混合料抗滑性能的研究

通过摆式摩擦系数仪和铺砂法分别检测了成型板式试件的摩擦系数和构造深度,对五种级配对应的摩擦系数、构造深度进行试验研究。研究认为,将橡胶颗粒添加到路面中可以改善路面的抗滑性,橡胶颗粒的掺量越多,路面的抗滑性能越好。外掺法获得的沥青混合料的抗滑性能要优于内掺法的。此外,可通过控制关键筛孔4.75的通过率来调控混合料的抗滑性能。

Research on skid resistance of crumb rubber asphalt mixture

The coefficient of friction and the depth of texture for shaped plate specimens were examined with pendulum friction coefficient tester and sand patch method,with research on coefficient of friction corresponding five kinds of gradation.It is suggested that the crumb rubber added to asphalt mixture can improve the skid resistance of pavement.The more content of rubber particles is added,the better is the skid resistance of pavement.The skid resistance of asphalt mixtures obtained with external mixing method is superior to that with internal mixing method.In addition,the skid resistance of the mixtures can be adjusted by controlling the percentage of passing through the key sieve hole 4.75.