Search

Highlights • Rainfall-load coupling action has a significant effect on salt dissolution. • The anti-icing filler dosage has the greatest effect on salt dissolution. • The amount of salt dissolved can be predicted by an established model. Abstract The salt in the Self-ice-melting pavement can dissolve gradually during rainfall, which will shorten its snow-melting life. The purpose of this study was to analyze the law of salt dissolution with the improved Hamburg wheel-track device under the action of rain, load-rain coupling and humidity-temperature coupling. The experimental results showed that the amount of salt dissolved under the action of rain was significantly less than that under the action of load-rain coupling, and the amount of salt dissolved was very small under the action of humidity-temperature coupling, so its action can be neglected. Based on the studies above, the influence on the salt dissolved of factors such as rainfall intensity, anti-icing filler dosage, void volume, temperature, and the type of asphalt mixture was analyzed by the method of gray relational analysis under the action of load-rain coupling, after which a prediction model of the amount of salt dissolved was established with the regression analysis software 1stopt. The results showed that the correlation coefficient of the developed prediction model was 0.961, and the improved Hamburg wheel-track device can be used to evaluate the effect of rainfall on salt dissolution. [ABSTRACT FROM AUTHOR]