半刚性基层沥青路面病害的原因与防治

On the causes of the defects of the semi-rigid base asphalt pavement and treatment measures

通过分析某二级路沥青路面病害情况 ,提出设计、地质、气候、材料、施工及养护等方面存在的问题是半刚性基层沥青路面发生病害的主要原因。针对病害原因提出采用合理的沥青路面结构设计、重视路面排水设计、采用合理的基层和底基层结构、控制原材料质量、优化沥青混合料配合比、严格控制施工、加强养护等预防措施 ,同时针对具体病害提出碾压、塞缝、挖除、填补及罩面等治理措施 。

In this paper,the defects of one asphalt pavement of Class II are analyzed and it is pointed out that the defects of the semi rigid base asphalt pavement mainly come from the following factors: design,geological condition, climate, material, construction and maintenance. Then the prevention measures of such defects are proposed as follows:adopting reasonable structure design of the asphalt pavement,paying attention to the drainage design of the pavement,employing reasonable structure of the base and sub base courses, controlling the quality of the raw materials, optimizing the mixing ratio of the asphalt mixture, supervising the construction activity strictly and strengthening maintenance. At the same time, in order to cure the defects of the asphalt pavement,some treatment measures such as compacting, sealing, cutting,filling and coating are given.