Research On Skid Resistance Function Attenuation And Evaluation Method Of Cement Concrete Pavement

With the cause of China's rapid development of highways, the road surface traffic safety aroused people's interest day by day, the good skid resistance performance might satisfy the high-speed requirements of automobile, simultaneously also has provided the friction which for between the tire and the road surface the safe distance braking needed, reduced the traffic accident hidden danger.In recent years, there are frequently such a phenomenon, that is, the road when the skid resistance performance of Road completion approval will satisfy the design requirements, after maybe open to traffic soon, the skid resistance performance of road surface with rapid attenuation of wear and tear. In especially, Cement concrete pavement is the opening of micro-structure rapidly worn away in the 1～2 years, following the traffic load, the macro-structure is gradually polished up to wear and tear, and ultimately down to the road friction coefficient table to a very low level, it is difficult to vehicles to provide adequate adhesion or braking force, and induced traffic. Therefore, the study of cement concrete pavement performance of the anti-sliding attenuation law, the maintenance of road traffic safety and improve the quality of road use is very important.The paper through to cement concrete surface wear mechanism analysis, developed the indoor accelerate worn instrument of cement concrete, research the typical texture's attenuation law of the skid resistance;exponential smoothing to found the evalution model on the skid resistance and the abrasion depth attenuation; At the same time, analysis freezing and thawing factor on the durability of the road surface structure; through indoor freeze-thaw test and the analysis of test results,to propose the anti- freezing evaluation methods of cement concrete pavement; Finally, according to abrasion and anti- freezing evaluation method , proposed a evaluation method on cement concrete pavement surface structure attenuation can be used "freezing - wearing" the joint action evalution method.