Study On Skid Resistance Of Asphalt Pavements Based On Different Temperatures And Polishing Conditions

The anti-sliding ability of road surface is one of the most important parameters for evaluating road surface conditions.Therefore,the laws of road surface anti-sliding ability is a topic of concern to many road researchers.Many scholars have observed the following phenomena: the road surface has certain anti-sliding ability and season.The correlation,therefore,many scholars speculate that the road surface anti-sliding ability has a certain correlation with temperature,so this paper takes the temperature and polishing degree as the main influencing factors,and studies the laws of the asphalt pavement's anti-sliding ability under different temperatures and polishing degrees.In this paper,three kinds of asphalt mixture test pieces were firstly produced,and the hysteresis,adhesion and total anti-sliding ability under different temperature and wear times were tested by using small acceleration loading equipment(MMLS)with lubricant.The test,and then used the 3D scanner to collect the texture data of the surface of the test piece with different wear times,and calculated the total of 18 indicators in five categories describing the surface texture decay characteristics of the test piece;then the anti-slip ability and the macro texture of the road surface Regression analysis was carried out to establish and optimize the decay model of anti-sliding ability;finally,the outdoor test was carried out.The conclusion is as follows.Firstly,the temperature mainly acts on the hysteresis force,and the change of adhesion mainly depends on the increase of the wear frequency.Secondly,it can be used to describe the anti-slip ability for the decay law and variation characteristics of the five major types of texture indicators.The index of change;then,according to the abovementioned texture index,the cooperative decay regression formula of macrotexture and temperature and its corresponding anti-sliding ability is completed,and its optimization and improvement are further improved to further improve its correlation and accuracy;Based on the above regression formula,the appropriate combination of indicators was selected and the decay model of anti-sliding ability was established.The regression model was verified by outdoor experiment.