Optimal Design and Road Performance of Waterborne Acrylic Heat Reflective Coating on Asphalt Pavement

Abstract

Abstract: In order to reduce the temperature of asphalt pavement and alleviate the urban heat island effect, a new type of environmentally friendly waterborne acrylic heat reflective coating was prepared by selecting waterborne acrylic emulsion as the base material. The best quality mixing ratio of the paint was determined through orthogonal experiments. The indoor cooling device was used to test the influence of the amount of paint and temperature on the cooling effect. The correlation of the cooling effect was analyzed, and the anti-skid performance and adhesion performance of the coating were evaluated. The results show that the best quality mixing ratio of the paint is: the solid content of waterborne acrylic emulsion is 47%, the content of rutile titanium dioxide is 14%, the content of quartz powder is 7%, and the content of hollow glass beads is 3% (all above is mass fraction). The cooling effect increases with the increase of the amount of brushing, but after reaching a certain level, the cooling effect tends to be stable. The recommended best dosage is 1.0 kg/m². The cooling effect of the coating increases with the increase of temperature, and the correlation between indoor and outdoor cooling effects is extremely strong. With the increase of the amount of brushing, the anti-slip performance continues to decrease. The addition of anti-slip particles can effectively improve the anti-skid performance, and has almost no effect on the cooling effect. The adhesion performance increases with the increase of the amount of brushing, and the adhesion performance of the specimen is stronger after polishing.

Key words: waterborne acrylic heat reflective coating, road engineering, orthogonal test, road performance, cooling effect, anti-skid performance, adhesion property

CLC Number:

U414

SHEN Aiqin, KONG Tao, GUO Yinchuan, QIAN Yao, LI Peng. Optimal Design and Road Performance of Waterborne Acrylic Heat Reflective Coating on Asphalt Pavement[J]. BULLETIN OF THE CHINESE CERAMIC SOCIETY, 2021, 40(11): 3829-3836.

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