To accelerate snow and ice melting on asphalt pavement, people have to manually spread traditional chloride salts, causing serious environmental pollution and infrastructure corrosion. In this paper, an environmentally friendly snow-melting material (RXM), which was added to the asphalt concrete to prepare the melting-snow pavement, was prepared by using steel slag, sodium chloride, coupling agent solution, hydrophobic agent. Firstly, RXMs with different component composition were studied by Marshall test to study the suitability of RXM and asphalt mixtures. Then anti-icing test and snow melting test were used to study the snow-melting performance of snow-melting asphalt concrete. Lastly, comparing with a current mainstream MFL, rutting test, bending test, freeze-thaw splitting test and scouring test were carried out to evaluate its high temperature stability, low temperature crack resistance and water stability. The results showed that the asphalt concrete with RXM had excellent snow-melting and anti-icing performance. The sample with RXM had a significant snow-melting effect in medium snow conditions compared to the sample without RXM. In heavy snow conditions, although the snow-melting capacity of the sample with RXM was slightly insufficient, its snow melting speed was still 1.72~2.39 times of the blank sample. Water icing was delayed for 2-3 hours at -5℃ on the surface of the asphalt mixture containing XRM. The addition of RXM and MFL had certain adverse effects on the high temperature stability, low temperature crack resistance and water stability of asphalt concrete, but the performance still met the requirements of the specification, which provides a new way to alleviate road icing and improve traffic safety in a rainy and snowy weather.

CICTP