就地热再生维修车辙技术的适用性分析

Analysis on Applicability of Hot In - Place Recycling in Rutting Maintenance

就地热再生维修车辙技术一般是对沥青路面表层3～5 cm厚的沥青混合料进行再生,而目前许多研究认为,中面层是产生车辙的主要层位。通过动态蠕变试验、车辙试验及有限元计算,从沥青路面中面层经过车辆荷载作用、自身材料的老化及就地热再生时中面层经过再压实后的抗车辙性能的变化三个方面分析了就地热再生维修车辙技术的适用性。研究结果表明:就地热再生维修车辙技术只对沥青路面表层进行处理,而不处理中、下面层的维修方法是可行的。

Hot in -place recycling in rutting maintenance was generally applied to deal with the surface layer at a range of 3 to 5 centimeters thick,whereas current researches regarded the intermediate layer as the main layer contributing to rutting.Through dynamic creep test,wheel tracking test and finite element calculation, the applicability of hot in - place recycling in rutting maintenance was analyzed from the following three aspects：traffic load effect on intermediate layer,the aging of its material and the recompaction of intermediate layer during hot in - place recycling.The result showed that this maintaining method which only treated the surface layer,but did not deal with the other layers was feasible.