Road performance of color reflective asphalt pavement coating
1. Key Laboratory for Special Area Highway Engineering of Ministry of Education, Chang′an University, Xi′an, Shaanxi 710064, China; 2. Northwest Subsidiary Company of CACC, Xi′an, Shaanxi 710075, China; 3. Tangshan City Transportation Bureau, Tangshan, Hebei 063000, China
Abstract：To improve the high temperature stability of asphalt pavement and alleviate the urban heat island effect, a color reflective asphalt pavement coating was developed. The amount of raw materials and the preparation process of coating were determined, and the cooling effects of color coating were tested and analyzed. The effect of coating on the surface function of pavement was tested, and the improvement measures were put forward. The results show that the cooling effect is the best when the volume ratio of TiO2 to film forming base is 2.8%. The cooling effect of the coating is improved with the increasing of color filler, while the cooling effect tends to be unchanged when the color filler is larger than a certain threshold. The volume ratios of color filler to film forming base are recommended from the economic and cooling effect with red of 2.7%, green of 2.6% and yellow of 3.2%. In order to improve the anti-slide performance and abrasion resistance of the coating, 0.48~0.50 kg?m-2 mechanical sand should be sprayed in the middle part of coating, and the light calcium carbonate with 30% coating quality should be added.
2018, Vol. 39 
