半刚性基层路面裂缝成因与防治

On reasons for cracks at semi-rigid base pavement and their prevention

为了提高道路的质量,满足日益增长的交通运输需求,分析了半刚性基层路面裂缝形成的原因以及危害,指出荷载裂缝和收缩裂缝是半刚性基层路面常见的裂缝,要减小裂缝发生的几率,除了在施工方面改进之外,还可以通过限制水泥稳定基层中水泥用量、基层预锯缝、调整基层施工时间、加厚沥青面层等手段加以控制。

In order to improve the road quality and meet the increasing demands of the transportation, the paper analyzes the reasons for the cracks on the semi-rigid base pavement and their hazards, points out the loading and shrinkage cracks are common on the semi-rigid base pave- ment, indicates the improvement is needed at the construction, as well as measures including cement volume, saw joint at pavement＇ s top, ad- justment of pavement construction period, and thickening asphalt layer.