Durability of road cooling coating under different working conditions
1. School of Civil and Transportation Engineering, Guangdong University of Technology, Guangzhou, Guangdong 510006, China; 2. School of Highway, Chang′an University, Xi′an, Shaanxi 710064, China
Abstract：To investigate the endurance performance of a novel pavement coating under different working conditions, two types of new cooling coatings were prepared. The cooling effects of the cooling coatings were investigated systematically. The endurance properties of cooling coatings under single working condition were discussed through water resistance, temperature changing resistance, chemical resistance and wearing resistance tests. Simulating the environmental factors and vehicle factors, the endurance tests of cooling coatings under complex working conditions were conducted using pressure resistance, rutting resistance and wearing resistance indices. The results show that the novel cooling coating has excellent cooling performance, and the best cooling effect can reach above 9 ℃. Under the single working condition, water resistance, temperature changing resistance, chemical etching resistance and wearing resistance of cooling coatings can meet the requirements of standards. Under the complex working conditions, the pressure resistance and the rutting resistance coefficients are both above 90%, and the wearing mass loss is less than 0.2 g. The new pavement cooling coatings have excellent endurance performance to meet the road requirements.
2018, Vol. 39 
