超疏水仿生水泥混凝土路面防覆冰技术及效能评价

发布时间：2018-02-10 01:17

  本文关键词： 超疏水 防覆冰 水泥混凝土路面 附着强度 表面能 效能评价　出处：《材料导报》2017年14期 　论文类型：期刊论文

【摘要】：通过微纳米路表构建与超疏水材料涂覆技术相结合,制备了超疏水仿生水泥混凝土路面模型试件;开展超疏水材料涂覆技术研究,分析总结其制备工艺;采用自行设计的"冰-路"附着强度测试装置进行防覆冰性能测试,同时开展接触角测量试验、路面表面能计算及耐久性试验,综合评价超疏水仿生水泥混凝土路面的疏水、防冰效能。结果表明:超疏水水泥混凝土试件表面冰的残留率为29.9%,是普通试件的1/3左右,间接反映了超疏水路面具有较好的疏冰性能;与普通试件的接触角0°相比,超疏水水泥混凝土试件的接触角为153.5°,达到超疏水状态;表面能计算表明超疏水材料的作用降低了路面表面能,仅为普通水泥路面的3.4%,进一步验证了超疏水水泥混凝土路面可显著降低"冰-路"附着强度;通过模拟轮胎与路面的摩擦作用,接触角依然在90°以上,表明超疏水路面耐久性良好。
[Abstract]:The superhydrophobic biomimetic cement concrete pavement model specimens were prepared by the combination of micro-nano surface construction and superhydrophobic material coating technology, and the superhydrophobic material coating technology was studied, and the preparation process was analyzed and summarized. The self-designed "ice-road" adhesion strength testing device was used to test the anti-icing performance, at the same time, the contact angle measurement test, the surface energy calculation and durability test were carried out to comprehensively evaluate the hydrophobic hydrophobic bionic cement concrete pavement hydrophobicity. The results show that the residual rate of ice on the surface of superhydrophobic cement concrete is 29.9, which is about 1/3 of that of ordinary specimens, which indirectly reflects that the super-hydrophobic pavement has better ice-thinning performance, and the contact angle of the superhydrophobic concrete is 0 掳. The contact angle of superhydrophobic cement concrete specimen is 153.5 掳, which reaches the superhydrophobic state, and the calculation of surface energy shows that the action of super-hydrophobic material reduces the surface energy of pavement. Only 3. 4% of the ordinary cement pavement, which further proves that the super hydrophobic cement concrete pavement can significantly reduce the "ice-road" adhesion strength, and the contact angle is still above 90 掳by simulating the friction between the tire and the road surface. It shows that the durability of super hydrophobic pavement is good.
【作者单位】： 长沙理工大学桥梁工程安全控制省部共建教育部重点实验室;
【基金】：湖南省交通厅科技计划项目(201313) 长沙理工大学桥梁工程安全控制省部共建教育部重点实验室开放基金项目
【分类号】：U416.216
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本文编号：1499315