沥青混凝土病害成因分析及处理技术 学位论文.doc

哈尔滨市哈平路沥青混凝土病害成因分析及处理技术研究 摘 要 ，地处寒冷的中国东北地区，常年受到季节性冰冻气候的影响， 关键词：路面病害；成因分析  Research on Disease Causes and Treatment Technologies of Asphalt Concrete in Harbin HaPing Road Abstract HaPing Road is the urban trunk road which connects SanDaDongLi Road, HePing Road and HeXing Road, connecting the second ring Road in Harbin。With the increasing rate of car ownership, traffic volume, heavy traffic load, increasing the load on the road, causing road damage. Because Harbin is located in northeast of China, the road was affected by year-round to seasonal freezing climate, low temperature in winter and freeze-thaw cycles in spring. And the impact of freeze-thaw cycles and materials and maintenance management and other reasons, causing damage of asphalt concrete, containing the maincracks(horizontal, vertical and network cracking), rutting, loose flaking, polished surface and the pits and so on. Firstly, This paper introduces and analyses that the factors which influencing the stability of asphalt concrete, analyzed detailedly the causes of asphalt concrete and characteristics of disease, then combined with the actual situation of road and climate characteristics to elaborate the causes of main diseases in HaPing road. According to the pavement condition of survey data on HaPing road , using PCI（Pavement Condition index）to evaluate the severity of pavement. Finally, based on the of analysis on disease causes and the severity of asphalt concrete in HaPing road, This paper listed the usually technology and the latest technical achievement on pavement maintenance, formulate various diseases treatment of various project, then establish comprehensive argumentation, found the selection decision trees of pavement maintenance, and find out the suitable for each section of diseases and processing technology disposal scheme. Key word ：ause analysis, Pavement Condition index, Pavement maintenance