Abstract: In order to investigate on the snowmelt performance of ultra-thin saline and self-melted asphalt mixture,the solution conductivity as evaluation index to represent salt concentration in the solution size, since the snowmelt asphalt mixture indirect evaluation effect of snow melting of the ice. Grey entropy method was used to analyze the effect of different factors on the properties of snow melt significantly,and its snowmelt mechanism was discussed. The results show that the greater the amount of saline content alternative,the better the performance of melting snow. As the extension of dissolving analysis time,air void of asphalt mixture performance of snowmelt influence degree decreases. With the increase of water added,asphalt mixture snowmelt performance attenuation gradually. Saline content replacement is the main factors influencing the performances of asphalt mixture of snowmelt. The research results for the ultra-thin saline and self-melted asphalt mixture composition design provides a useful reference.

Key words: road engineering;ultra-thin saline and self-melted asphalt mixture;gray entropy method;snow melting performance;mechanism of melting snow