高速公路沥青路面面层裂缝的成因及防治

Cause and Prevention and Control of Crack in Expressway Asphalt Pavement Surface Course

沥青路面以其良好的行车性能、较低的造价成为高速公路面层的首选材料。然而,随着使用时间的延长和车辆荷载的增加,沥青路面难免产生裂缝等病害,威胁路面的使用性能和服务寿命。文章以高速公路沥青路面为研究对象,分析了沥青路面面层的裂缝类型、成因,从优化设计、裂缝灌缝、表面铣刨重铺以及加铺沥青面层四个方面提出了高速公路沥青路面面层裂缝防治对策,以期为高速公路沥青路面裂缝的科学预防与治理提供理论指导和技术支持。

Asphalt pavement has become the preferred material of expressway surface course with its good driving performance and low cost.However,with the extension of service time and the increase of vehicle load,asphalt pavement will inevitably produce cracks and other diseases,which threaten the use performance and service life of pavement.Taking the expressway asphalt pavement as the research object,this paper analyzes the types and causes of cracks in the asphalt pavement surface course,and puts forward countermeasures for the prevention and control of cracks in expressway asphalt pavement surface course from four aspects of optimization design,crack irrigation sewing,surface milling and repaving,and asphalt surface course overlaying,in order to provide theoretical guidance and technical support for the scientific prevention and control of cracks in expressway asphalt pavement.