基于沥青路面功能性能的预防性养护时机指标

Indexes for Timing of Asphalt Pavement Preventive Maintenance (PPM) Based on Pavement Functional Performance

路面预防性养护是国内外近年来研究的热点,路面预防性养护对维持良好的路面性能具有重要的意义。预防性养护的成功与否及其效益与进行预防性养护的时机密切相关,然而对于预防性养护的时机目前国内外还没有很好的解决办法。文章从预防性养护的作用出发,结合我国公路事业发展的现状,提出了基于沥青路面功能性能的预防性养护指标体系:路面沥青老化指标、路面渗水系数、路面行车安全性指标、平整度和路面状况指数(PCI) ,以及获取这些指标需要进一步解决的关键问题。

Pavement preventive maintenance (PPM) has been a research topic in recent years at home and abroad because of the importance and cost-effectiveness of timely preventive maintenance (PM) for pavements. But the timing of PPM is still an unsolved problem for us. Based on the function of PPM and the situation of highway development in China, the indexes of asphalt pavement functional performance-based PM is given in this paper. These indexes include the aging of asphalt pavement, permeability coefficient of pavement under driving condition, safety of driving on asphalt pavement(including Skid Resistance and rut), ride quality index (RQI) and pavement condition index (PCI). The key questions during determining these indexes are also given respectively.