湿热地区白加黑路面典型病害特征及机理研究

Research on the typical Disease Characteristics and Mechanism of White and Black Pavement in Hot and Humid Areas

依托茂湛高速采集白加黑路面段落路表病害、内部结构病害、承载力状况等数据分析得出,湿热地区白加黑路面路表病害中裂缝类病害占比95%以上,其次是松散类病害,变形类病害较少;内部病害以贯穿裂缝为主,水泥板底脱空情况普遍。通过对比不同种类病害发生的比例、位置、上下结构层位对应状况,分别揭示了主要病害类型的发育机理。最后,结合高温、潮湿、重载的交通环境条件,推荐了白加黑路面状况的评价指标和病害处治方案。

Based on the data of pavement surface diseases,internal structure diseases and bearing capacity of white and black pavement section collected by Maozhan Expressway,it is concluded that the proportion of crack diseases in pavement surface diseases of white and black pavement in hot and humid areas is more than 95%,followed by loose diseases and less deformation diseases.The internal diseases are mainly through cracks,and the void at the bottom of cement slab is common.By comparing the proportion,location and the corresponding conditions of the upper and lower structural layers of different types of diseases,the development mechanism of the main disease types is revealed respectively.Finally,combined with the traffic environment conditions of high temperature,humidity and heavy load,the evaluation index and disease treatment scheme of white and black pavement condition are recommended.