云贵川高原山区路面预防性除冰雪技术研究

发布时间：2018-02-01 03:39

本文关键词： 沥青路面预防性除冰技术抗凝冰材料雾封层碳纤维云贵川高原　出处：《长安大学》2015年硕士论文　论文类型：学位论文

【摘要】：我国云贵川山区冬季多雨,降雨后会在路面形成凝冰,使路面抗滑性能大幅下降,容易诱发交通事故,严重影响路面行车安全和交通运输通畅。对于凝冰路面,以往多是采用撒盐或人工除冰雪等措施进行事后处理。一方面,这种除冰雪方式未能从根本上解决路面凝冰的问题,除冰效果不够理想;另一方面,撒布的盐类在冰雪融化后会随冰雪融水流入周围土质中,对环境造成污染。因此,提出预防性的除冰雪技术,提高路面自身抗凝冰能力在当前环境下具有极为重要的意义。本文通过将抗凝冰材料AF代替部分矿粉获得了一种具有主动抑制或缓解路面凝冰功能的沥青混合料AAM,并对AAM的耐久性和不同AF掺量、冰厚等条件下除冰效果进行了研究。通过将乳化沥青、抗凝冰剂、大分子聚合物等制成多元溶液-乳液分散体系并作为路面雾封层材料,通过对材料抗凝冰剂释放速度、粘结能力、凝冰效果及稳定性等方面进行评价,开发出来抗凝冰雾封层,并对其除冰机理进行了研究。通过在沥青混合料中添加一定比例和细度的橡胶颗粒,获得自应力弹性沥青混合料(SEAM),对其除冰机理进行了分析;通过选取适宜的试验方法,对不同橡胶颗粒掺量、冰厚等条件下的除冰效果进行了对比分析,提出了自应力弹性沥青混合料(SEAM)的最佳配比和使用条件。通过在沥青混合料中添加碳纤维获得了导电碳纤维沥青混凝土,对其制备工艺、导电性能进行了研究,并对导电碳纤维-玻璃纤维格栅材料进行了设计。铺筑了抗凝冰粉剂路面,并进行了长期观测,通过技术经济评价,对抗凝冰路面在工程应用中的可行性进行了评价。
[Abstract]:It is rainy in winter in Yun-Guichuan mountainous area of our country. After rainfall, the road surface will be frozen, and the anti-skid performance of the road will be greatly reduced, which will easily induce traffic accidents, which will seriously affect the road safety and the smooth transportation. For the icy pavement, it is easy to induce traffic accidents. In the past, many measures such as salt sprinkling or artificial snow removal were used to deal with the ice afterwards. On the one hand, this method could not fundamentally solve the problem of road icing, and the deicing effect was not satisfactory. On the other hand, when the snow and ice melt, the distributed salts will flow into the surrounding soil with the melting water, which will pollute the environment. Therefore, the precautionary technology of snow and ice removal is proposed. It is very important to improve the anticoagulant ice ability of road surface in the current environment. In this paper, a asphalt mixture with the function of actively inhibiting or alleviating the icing of pavement is obtained by replacing some mineral powder with AF. AAM. The durability of AAM and the deicing effect under different AF content and ice thickness were studied. The emulsified asphalt and anticoagulant were used. Macromolecular polymers were prepared into multi-component solution-emulsion dispersion system and used as road surface fog sealing material. The release rate of anticoagulant, adhesive ability, freezing effect and stability of the material were evaluated. The anticoagulant ice fog seal was developed and its deicing mechanism was studied. The self-stress elastic asphalt mixture (SEAM) was obtained by adding a certain proportion and fineness of rubber particles into the asphalt mixture. The deicing mechanism was analyzed. By selecting the appropriate test method, the deicing effect under different rubber particle content and ice thickness was compared and analyzed. The optimum proportion and application conditions of self-stress elastic asphalt mixture (SEAM) were put forward. Conductive carbon fiber asphalt concrete was obtained by adding carbon fiber into asphalt mixture. The electric conductivity was studied, and the conductive carbon fiber-glass fiber grid material was designed. The anticoagulant powder pavement was constructed, and the long-term observation was carried out, and the technical and economic evaluation was carried out. The feasibility of anti-icing pavement in engineering application is evaluated.
【学位授予单位】：长安大学
【学位级别】：硕士
【学位授予年份】：2015
【分类号】：U418.41

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