无车辙超级沥青路面改性剂路用性能试验研究

Experimental Study on Road Performance of Modifier for Ultra-High Rutting Resistant Pavement

由于车辆的超载、重载行为,以及全球气候变暖导致的高温天气逐年增多,在双重作用下路面结构往往会受到极为严重的破坏,导致车辙等病害的发生,不仅使路面养护维修的工作量和养护费用增加,而且降低了道路的舒适性。针对传统沥青路面结构中的石灰岩石料、玄武岩石料和SUP-20、SUP-13、SMA-13 3种沥青混合料开展不同的路用性能试验,得出结论:针对不同岩性和不同类型的沥青混合料,掺加URP(Ultra-High Rutting Resistant Pavement,无车辙超级沥青路面)改性剂均能大幅提高沥青混合料的高温稳定性能,同时使其抗水损害性能及低温抗裂性能略有改善,可为解决高温和超重载交通影响下沥青路面的车辙病害问题提供参考。

Due to vehicle overloading,overloading behavior,and the increasing frequency of high temperature weather caused by global warming,the dual effects of overload and continuous high temperatures can cause extremely serious damage to the pavement structure,leading to the occurrence of diseases such as rutting,not only increasing the workload and maintenance costs of pavement maintenance,but also reducing road comfort.Different road performance tests have been conducted on limestone,basalt,and SUP 20,SUP 13,and SMA 13 asphalt mixture types in traditional asphalt pavement structures.The conclusion is that the addition of URP(Ultra-High Rutting Resistant Pavement)modifiers for different lithology and asphalt mixture types can significantly improve the high-temperature rutting resistance of asphalt mixtures,At the same time,the water damage resistance and low temperature crack resistance have been slightly improved,which can provide a reference for solving the rutting problem of asphalt pavement under high temperature and heavy load conditions.