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用扩散室方法研究了经表面处理后砂浆试样的氯离子扩散性,使用c(NaCl)为5mol/dm3的溶液,并在试样两端加7.5V直流电压,测量时间在7～15d左右.通过氯离子扩散系数和氯离子扩散阻力的计算和比较发现,氯丁胶乳、氯偏乳液、氯化聚乙烯和氯化聚氯乙烯溶液涂层的氯离子扩散系数比砂浆基材小2～3个数量级;聚合物本身含氯量越大,抗氯离子穿透的能力越大;含氯量相近的聚合物,溶液涂层比乳液涂层的氯离子扩散系数还小.另外,涂层的均匀性对氯离子扩散有非常重要的影响.丁苯胶乳和无机防水涂层P401则促进了氯离子的扩散
Diffusion chamber method was used to study the chloride ion diffusivity of surface treated mortar samples. The solution with 5 mol / dm3 of c (NaCl) was used. A 7.5V DC voltage was applied across the sample and the measurement time was about 7-15 days Through the calculation and comparison of chloride ion diffusion coefficient and chloride ion diffusion resistance, the chloride diffusion coefficient of neoprene latex, chlorine partial emulsion, chlorinated polyethylene and chlorinated polyvinyl chloride solution coating is 2 ~ 3 orders of magnitude. The larger the amount of chlorine in the polymer itself, the greater the resistance to chloride ion penetration. The polymer with similar chlorine content has a smaller chloride diffusion coefficient than the emulsion coating. In addition, Of the uniformity of chloride ion diffusion has a very important impact.B SBR and inorganic waterproof coating P401 promote the diffusion of chloride