沥青路面车辙成因及防治措施

Genesis and Preventive Measures of Asphalt Pavement Rut

国际上将车辙分成结构性车辙、剪切性车辙和磨损性车辙三种形式。还有一种国外很少发生、在我国却比较常见的形式是由于公路施工时没有充分压实,致使通车后第一个高温季节混合料继续压密而形成的。矿质材料性质、集料含泥量、沥青性质、沥青混合料级配、沥青混合料剩余空隙率、矿料间隙率、沥青混合料密度、车辙试验温度、基层、面层强度不足都是产生车辙的重要因素。防治车辙,主要从路面基层类型选择与施工控制和沥青混凝土组成与施工控制两方面着手,但不能只局限于技术的突破或材料的更新,还需要依靠政策法规。

According the international classification, rut includes three types, such as structural, sheared and worn. There＇s another one usually occurring home rather than abroad, which is formed in the first high tem perature season after traffic open by keeping compaction to the mixture absent of full compaction during the con struction. Eight factors will lead to the occurrence of rut. To prevent the appearance needs to do good job on the selection and construction control of base layer, the composition and construction control of asphalt concrete. But that＇s not enough to pay attention only to the technical breakthrough and the material update, policies and regu lations are also essential and important.