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Safe and Eco-Friendly Haze-Eliminating Pavement Coating

The main purpose of the pavement coating is to reduce the haze by absorbing and degrading pm2.5 from automobile exhaust. Based on the investigation and analysis of the source and main composition of haze and pm2.5 and the physical and chemical properties of haze, the paper proposes the method of combining the absorption and catalytic degradation of active Al2O3 and nanometer TiO2 together. Through the experiments, the pavement coating which has the different ratio of active Al2O3 and nanometer TiO2 behaves differently on the effect of absorption and degradation of pm2.5, and the optimum dosage and ratio of active Al2O3 and nanometer TiO2 was found finally. The pavement coating which use the optimum dosage has the more obvious effect under the ultraviolet. And the water resistance and skid resistance performance can also meet the requirements.