Composition Design and Performance of High Viscosity Micro-surface Pavement Material with Snow Melt Function

The snow or ice that forms on pavement surfaces in cold weather results in severe traffic accidents and economic losses. Micro-surface material is a cost-effective preventive maintenance technology for road surface, which can guarantee the skid resistance and traffic capacity of the roads. Firstly, the composition design of high viscosity snow melting micro-surface was studied, and the change law of salt precipitation under different dosage was analyzed by conductivity test, combined with 1 h wet wheel abrasion test and load wheel sticky sand test to determine the best dosing of snow melting agent. Secondly, cohesive force test was designed to make up for the defect that the aggregate coating test could not be quantitatively analyzed. From the perspective of conventional road performance and snow melting performance, the feature of the three micro-surface material is analyzed. Finally, the performance of the paved test road is tested through the physical engineering. The results show that when the content of snow melting agent is 10%, the high viscosity snow melting micro-surface has the advantages of high adhesion strength with aggregate after demulsification, fast molding speed and high strength of mixture; the high viscosity snow melting micro-surface has good road performance and snow melting and deicing effect.