Study On Correlation Of Dynamic Friction Factor Of Highway Pavement

With the development of the China economy, highway system was also increased rapidly.But due to the non-harmony of people, vehicle, road and environment, safety problem comesto be the most serious issue in highway transportation, leading to high number and fatalityratio. So, not only transport, but also safety should be required for the highway system. Fineanti-slide performance of pavement can provide hi-speed vehicles with better adhesionperformance, and reduce accident probability. Due to the short time of China expresswaydevelopment, research and reference of general technology for the test and evaluation ofanti-slide performance is very important. But till now, the technology and evaluation indicesfor anti-slide performance was still not research and learned enough in China, so the problemsin design and test specifications should be studied and thought over.The performance mechanism of pavement friction and affecting factors were analyzed inthis paper firstly, and the common detection methods and equipments for pavementskid-resistant performance were collected, their working principles and advantages andshortages were introduced, the detection equipments of existing pavement texture structureand skid-resistant performance were compared finally.Then, the relationship among DFT, BPN and SFC were studied. According to a series ofexperiment, DF and SFC under the same or different testing speed are both in well relativity,which indicated that, SFC value under different testing speed can be calculated form DFunder given testing speed. The fading law of anti-slide performance of pavement underdifferent texture depth, testing speed was also discussed, and the fading law of BPN, MTDand DF with traffic loading varies were also studied.