摘要
针对新疆地区公路等级较低、里程较长的特点,采用有机硅密封胶、SBS改性沥青及涂抹材料进行裂缝修补试验。结果表明,SBS改性沥青极易出现黏结失效和断裂失效,涂抹材料的跑料现象明显,这两种材料均不适用于新疆地区的沥青混凝土路面裂缝修补。分别采用方槽凹封式和方槽灌封式进行了两次有机硅灌缝试验,结果表明,方槽凹封方式容易出现积水和积砂石的损坏现象,原路面老化较严重时容易引起侧缝和啃边的现象;选择原路面状况较好的路段,采用方槽灌封方式进行有机硅密封胶灌缝,取得了良好的裂缝修补效果。
Three kinds of road crack repair materials are used in Xinjiang region to adapt to the local characteristics of lower road grade and longer mileages, which are silicone sealant, SBS modified bitumen and surface coated material. The results show that the SBS modified bitumen is prone to adhesive failure and cohesive failure, while the surface coated material is prone to pullout failure. Both of them are not suitable for road crack repair in Xinjiang region. Two silicone sealant tests are also conducted, one for standard reservoir-and-recess, and the other for standard reservoir-and-flush. The results show that when the standard reservoir-and-recess is applied, the groove is often filled with water and sandstone. Besides, when it is used on aged pavements, secondary cracking and boundary failure are prone to occur. On the contrary, the standard reservoir-and-flush performs well especially when the original pavement is in good condition.
出处
《公路》
北大核心
2011年第12期18-22,共5页
Highway
基金
国家自然科学基金资助项目
项目编号51008146
西部交通建设科技项目
项目编号200831800066
关键词
道路工程
裂缝
SBS改性沥青
有机硅密封胶
施工方法
应用
road engineering
crack
SBS modified bitumen
silicone sealant
construction method
application
