沥青路面绿色缓释微胶囊自融冰剂的研究与测试

为了解决传统氯盐类道路融雪剂存在对道路腐蚀和环境危害的问题，开发一种绿色环保的缓释微胶囊自融冰剂。利用从糠醛生物质内提取的有机物质制作自融冰剂芯材，利用固废载体将融雪盐芯材吸附至孔隙内，再在吸附芯材的载体表面进行高分子囊壁改性处理，形成微胶囊结构，以冰点和相对融冰化雪能力等为评价指标，开展室内性能试验，并在京雄高速(K64+992)～(K65+193.641)路段进行现场中试试验。结果表明，微胶囊掺入路面材料比例为4%时，室内融冰率达到46.9%,远超规范要求；在5.5%缓释微胶囊自融冰剂替代等量矿粉中试试验中，路面的落雪完全融化，融冰效果良好。利用糠醛热解废液提取物研发的融冰剂芯材缓释效果显著，避免了传统氯化物添加剂的腐蚀性，减少了对路面的腐蚀和环境污染，达到了绿色环保效果。

Research and testing of green and slow release microencapsulated self melting ice agent for asphalt pavement

In order to solve the problems of road corrosion and environmental damage caused by traditional chloride road snow melting agent, a green and environment-friendly slow release microencapsulated self melting ice agent was developed. The core material of self melting ice agent was made by extracting the organic substances in furfural. The core material of snow melting salt was adsorbed into the pores by using solid waste carrier, and the surface of the carrier of the adsorption core material was modified by the polymer capsule wall to form a microcapsule structure. Taking freezing point and relative ice-melting and snow-melting ability as indexes, the indoor performance test was carried out, and the field pilot test was carried out in section (K64+992)~(K65+193641) of Jingxiong Expressway. The results show that the indoor ice-melting rate reaches 469% when the ratio of microcapsule to pavement material is 4%, which far exceeds the standard requirement. In the pilot test of 55% replacement of mineral powder, the snow on the road surface melted completely, which shows the good ice-melting effect. The ice-melting agent core developed by using furfural pyrolysis waste liquid extract has a remarkable slow-release effect, avoids the corrosiveness of the traditional chloride additive, reduces the corrosion to the road surface and the environmental pollution, and achieves the green environmental protection effect.