Research Of Environmental Factors On The Asphalt Pavement Anti-sliding Performance Impact

With the rapid development of highway construction in our country, People not only feel road network construction more and more convenient and quick, at the same time, frequent traffic accident also let people realize the highway safety matters. Anti-sliding performance of pavement is the core of road safety, Asphalt concrete pavement occupies a large proportion in road construction in our country, So more and more scholars both at home and abroad get the attention of the anti-sliding performance of asphalt concrete pavement research. Asphalt pavement anti-sliding performance is affected by many factors,to explore the influence factors benefits to provide basis for improving pavement anti-sliding performance. For fixed road and traffic conditions affect the anti-sliding performance is only environmental factors, the temperature, rainfall and the pollution situation of road table, so the study of environmental factor influence for the anti-sliding performance of pavement has important significance. This paper mainly research on the asphalt surface temperature and surface pollutants impact the anti-sliding performance of asphalt pavement.First choose three kinds of aggregate:andesites, limestone,ceramsite.,measure the mineral aggregate characteristics,mechanical and physical properties. Choose the OGFC – 13,SMA- 13 and AC- 13 three types of grading and Forming rutting specimens.The second study the effect of temperature on asphalt pavement anti-sliding performance,on the basis of existing wheel speed grinder, research and development temperature controlled wheel polishing machine. With speed grinding machine polishing specimen,the same time it can control the grinding temperature changes within the range- 35 ℃ to 40 ℃. Study three typical asphalt mixture: OGFC-13, SMA–13and AC-13 BPN change rule under different temperature, Established early and after 4 hours polishing BPN temperature correction.By using lubricants divides the road surface friction coefficient into adhesive components and hysteresis components and to explore two component along with the change of temperature. Choose SMA- 13 and AC- 13 two gradations, molding two gradation of three different oil amount of rutting specimens.,control the polishing in five different temperatures,measuring the specimen BPN,structure depth and the loss of quality to study temperature effects on attenuation of anti-sliding performance of asphalt mixture.Finally, in order to study the effects of pollutants on the asphalt pavement anti-sliding performance,analysis of pavement diferent pollutants,Using four different medium polishing aggregates as to research in particle size and hardness of pollutants effects on aggregate.Forming SMA- 13 and AC – 13 rutting specimens,to simulate the real outdoor contaminated surface polishing effect of the vehicle,Polishing specimens in six different pollution conditions,at the same time measure the BPN depth and structure.