反射裂缝产生的原因及防治措施

Cause and Prevention Measure of Reflection Cracks

结合深圳地区旧水泥混凝土路面加铺沥青的设计,研究反射裂缝产生的原因,探讨防止反射裂缝产生的各种措施及不同沥青罩面厚度、不同防裂层分别对防治反射裂缝的效果。得知在水泥混凝土路面沥青加铺层之间设置防裂层是延缓沥青罩面层出现反射裂缝的行之有效的方法,加铺层的厚度以8～15cm为宜。

In combination of the design of paving old cement concrete pavement with bitumen in Shenzhen Area the paper studies on the cause of reflection cracks and approaches to various measures for preventing reflection cracks and the effect of different bituminous cover thickness and different anti-crack course to prevent reflection cracks. It is known that to install an anti-crack course between the bituminous paved courses of cement concrete pavement is a effective method for delaying reflection cracks on bituminous cover course. The appropriate thickness of the paving course should be 8-15cm.