高黏复合改性橡胶沥青在透水沥青路面中的应用

为了研究高黏复合改性橡胶沥青应用在透水沥青路面中的性能,依托实体工程,在PAC-13、PAC-20型透水性沥青混合料中使用高黏复合改性橡胶沥青,研究了高黏复合改性橡胶沥青混合料的各项路用性能和渗水系数,并与高黏改性沥青混合料进行了对比。结果表明,PAC-13、PAC-20型高黏复合改性橡胶沥青混合料的最佳油石比与同级配类型的高黏沥青混合料基本相同;PAC-13、PAC-20型高黏复合改性橡胶沥青混合料各项路用性能均优于高黏沥青混合料,其渗水性能也较为突出。

Application of High-viscosity Composite Modified Rubberized Asphalt in Permeable Asphalt Pavement

In order to study the performance of high-viscosity composite modified rubberized asphalt in permeable pavement,based on practical construction projects,high-viscosity composite modified rubberized asphalt was applied to produce permeable asphalt mixtures of PAC-13 and PAC-20.The pavement performance and coefficient of water permeability of the high-viscosity composite modified rubberized asphalt mixture were studied and compared with those of the high-viscosity modified asphalt mixture.The results show that the optimal asphalt-aggregate ratio of PAC-13 and PAC-20 high-viscosity composite modified rubberized asphalt mixture is basically the same as that of high-viscosity asphalt mixture with the same type of gradation;the pavement performance of PAC-13 and PAC-20 high-viscosity composite modified rubberized asphalt mixture is better than that of high-viscosity asphalt mixture,and its water permeability is also outstanding.