Research on Factors Affecting Anti-sliding Performance of Asphalt

Abstract

In order to investigate the influencing factors of asphalt pavement anti-sliding performance, the accelerated wear test, considering asphalt, aggregate, void ratio and load factor, to construct the depth and pendulum value of anti-sliding performance, the anti-sliding attenuation law of different asphalt mixtures was studied. The results show that the anti-sliding effect of asphalt on asphalt pavement is mainly reflected in its adhesion strength, which has a great influence on the initial anti-sliding ability and little influence on the friction coefficient in the later stage of load. The rubber asphalt has better anti-slip ability than the matrix asphalt in the early stage of load. Basalt has a comprehensive anti-sliding ability of asphalt mixture higher than limestone asphalt mixture due to its superior wear resistance and angularity. With the increase of void ratio, the structural depth of the asphalt mixture and the initial value of the pendulum increase, the faster the structural depth and the pendulum attenuation, and the difference between the final depth and the pendulum of the different asphalt mixture is small. As the load increases, the asphalt mixture's structural depth and pendulum attenuation rate increase, the final value decreases, and the asphalt pavement's anti-sliding ability is weakened.