某城市道路刚性组合式路面水损害分析及防水技术

Analysis of Water Damage and Waterproof Techniques on Rigid Combined Pavement of Urban Road

某城市道路刚性组合式路面出现了龟裂、沉陷、松散、坑洞、补块损坏等水损害现象,主要与路面结构不合理、施工质量不佳、养护不当等因素有关。介绍了该城市道路改造工程中采用的小空隙率沥青混合料面层、铺设SBR改性乳化沥青稀浆封层、设置胶粉改性沥青防水防裂层、级配碎石排水层等综合防水技术。

Water damages such as map cracking, subsidence, loose, popouts and damaged patch occur on rigid combined pavements of urban roads due to unreasonable pavement structure, poor construction and improper maintenance. The article describes comprehensive waterproof techniques used in renewal of the pavement, including using low porosity asphalt mixture as surface layer, SBR modified emulsified asphalt as slurry seal coat, adding rubberized asphalt waterproof and anti-crack layer and graded broken stone drainage layer.