城市旧水泥混凝土路面加铺沥青罩面层技术

Research on Asphalt Overlay Technology of Urban Existing Cement Concrete Pavement

目前,水泥混凝土路面使用一定期限后加铺沥青路面在旧路改造中比较普遍。然而,沥青加铺层中迅速发展的反射裂缝也是此结构方案的主要病害。结合反射裂缝的发生机理,通过柳州市潭中西路铺筑的试验路段,从沥青加铺层结构设计和施工中旧路面的加固处置工艺两个方面阐述了如何预防和延缓反射裂缝的发生。

It's common now of spreading asphalt overlay on the existing cement concrete pavement which has been used for a certain period.But the reflective crack will appear very quickly during the asphalt overlay,being the main damage of the structure plan.Combined with the crack principle and through the experiment section of West Tanzhong Road in Liuzhou,how to prevent and delay the appearance of the reflective crack is presented in the paper from 2 aspects including asphalt overlay structure design and existing pavement strengthening technique.