关键词: 道路工程, 环保型融雪剂, 融雪沥青混合料, 制备工艺, 融雪性能

Abstract: In view of the lag and low efficiency of the existing traditional snow removal technology, an environment-friendly snow-melting agent (ZRX) was developed to enhance the snow-melting and ice-melting performance of asphalt pavement in winter. The industrial slag steel slag, sodium chloride, coupling agent solution and hydrophobic agent were selected to prepare the snow-melting agent with different component proportion. Through Marshall test, the mixture ratio of snow-melting agent to asphalt mixture was determined, and the long-term salting-out performance of snow-melting asphalt mixture was tested by electronic clinometer. Finally, the snow-melting performance of the snow-melting asphalt mixture was tested by different intensity of snow. The results show that the ZRX agent may instead of all 0.075 ~ 0.15mm aggregate in grading. The Marshall test shows that the stability of ZRX asphalt mixture is reduced and the flow value is larger, but it can still meet the specification requirements. The salting-out rate of ZRX agent in the mixture is the fastest in the first 48 hours, and it can continue to precipitate in the accelerated test. Under the condition of continuous heavy snow, the snow-melting performance of ZRX specimen needs to be improved, but the snow-melting effect is obvious under the condition of moderate snow. Therefore, it is suggested that the use environment of snow-melting asphalt mixture should be light snow to moderate snow.

Key words: highway engineering, environment-friendly snow-melting agent, snow-melting asphalt mixture, preparation process, snow melting