Cause and Prevention and Control of Crack in Expressway Asphalt Pavement Surface Course
Asphalt pavement has become the preferred material of expressway surface course with its good driv-ing performance and low cost.However,with the ex-tension of service time and the increase of vehicle load,asphalt pavement will inevitably produce cracks and other diseases,which threaten the use performance and service life of pavement.Taking the expressway asphalt pavement as the research object,this paper analyzes the types and causes of cracks in the asphalt pavement surface course,and puts forward countermeasures for the prevention and control of cracks in expressway asphalt pavement surface course from four aspects of optimization design,crack ir-rigation sewing,surface milling and repaving,and asphalt surface course overlaying,in order to provide theoretical guidance and technical support for the scientific prevention and control of cracks in expressway asphalt pavement.
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