Research of Pollutants Impact on Anti-sliding Performance in Asphalt Pavement

Abstract

The friction between tires and pavement is the source of driving force of automobile, which is also an effective guarantee for the vehicle handling stability and traffic safety [1] . The coefficient of friction between tires and pavement is a main indicator to measure the anti-sliding performance in pavement. A good anti-sliding performance is one of prerequisite performance of the asphalt pavement. Therefore, the anti-sliding performance is the most important characteristic among the pavement surface characteristics (anti-sliding characteristic, flatness characteristic, driving noise characteristic and reflective characteristic and so on) [2][3][4] . The pollutants in pavement will seriously reduce the anti-sliding performance in pavement, mainly manifesting in two aspects: first, the pollutants embedded in the macro-structure depth of pavement block the gap in pavement surface, thereby reducing the friction coefficient of pavement [5] ; second, the pollutants will cover the pavement surface, and play a role in lubrication. Wilson, et al [6] researched the influencing factors of anti-sliding performance in pavement, and found that, under the fixed pavement and traffic conditions, the influencing factors of anti-sliding performance are only related to temperature [7] , rainfall and pollution to the pavement surface [8] . Zhu Yuping carried out the research on improvement of the anti-sliding performance in asphalt pavement [9] . This paper researches the impact of pavement pollutants on the anti-sliding performance in asphalt pavement. OVERVIEW OF RELEVANT RESEARCHDomestic and foreign scholars have observed the impact of tires and pavement media on the anti-sliding performance for a long time, and carried out the relevant research. Through statistics of traffic accidents and pavement anti-sliding coefficient in rainy days in Virginia, the United States, J.S. KPttesch [10] found that, the pavement in rainy days is likely to produce insufficient anti-sliding performance, resulting in increase in slippery traffic accidents in rainy days. A. Notheim, et al [11] researched the impact of different structures and properties of ice and snow on the anti-sliding performance in pavement. J.C. Wambold, et al [12] viewed ice and snow as the pavement pollutants, and researched the impact of ice and snow on the anti-sliding performance in pavement through the anti-sliding performance test and theoretical analysis. Peng Xudong, Guo Konghui, et al [13][14][15][16] researched the impact of the friction mechanism of tires and ice and snow pavement and the ice and snow on the friction coefficient of tires and pavement. Through statistical analysis of the anti-sliding performance and traffic accidents in Swiss pavement, H.P. Lindenlnann, et al [17] found that, in the early stage of initial rain in summer, the anti-sliding performance in pavement ABSTRACT: The lack of anti-sliding performance in asphalt pavement caused by pollutants is one of major factors causing the traffic accidents. This paper discusses the influencing mechanism o...