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针对目前海洋工程硅烷渗透型防护剂成膜时间较长、挥发量大等问题,以不同疏水基硅烷为前驱体,利用溶胶凝胶技术进行醇环境酸性聚合,制备了快速成膜、有效防护的溶剂型硅烷防护剂。结果表明:酸聚合溶剂型硅烷防护剂在砂浆表面渗透成膜时间大幅缩短,只用4h已接近完全成膜渗透深度;溶剂型硅烷防护剂比相同固含量硅烷醇液处理混凝土试件防护效果更好,降低了更多相对氯离子电通量值。
Aiming at the problems of long time of membrane formation and large amount of volatilization of marine engineering silane permeable protective agent, different hydrophobic silanes are used as precursors, and alcoholic environment acid polymerization is carried out by sol-gel technique to prepare a rapid film-forming and effective protective Solvent-based silane protective agent. The results showed that the time for the acid-based solvent-based silane protective agent to penetrate into the mortar surface was significantly shortened, and the penetration depth was almost exactly 4 h. The protective effect of the solvent-based silane protective agent on the specimens with the same solid content silanol treated concrete was more Well, lower the relative chloride ion flux value.