摘要
采用辛基三乙氧基硅烷等活性成分和助剂经乳化制备渗透型混凝土硅烷防护膏。通过测试混凝土试件的质量和力学性能变化,研究了硅烷防护膏对混凝土抗氯离子侵蚀能力和抗冻融破坏性能的影响。结果表明,硅烷防护膏能够显著减少氯离子对混凝土的侵蚀,在10%Na Cl溶液中浸泡48 h后,涂覆硅烷防护膏的混凝土表面0~5 mm内的平均氯离子含量降低率大于94%;冻融循环后,硅烷防护膏浸渍试件的质量损失率小于1%,相对动弹性模量大于80%,抗压强度损失率小于5%,硅烷防护膏对混凝土抗冻性能影响显著。
The permeable concrete silane protective paste was prepared by octyl-triethoxy silanc and other active ingredients and additives emulsion. The chloride resistance and freeze-thaw resistance of permeable concrete silane protective paste were investigated by changes of the mass and mechanical properties of the concrete sample. The results show that the silane protective paste can significantly reduce the erosion of chloride ions on concrete, the average chloride ion concentration reduced by more than 94% in the 0-5 mm range of concrete surface coated with silane protection when concrete specimen were soaked in 10% NaCl solution for 48 h. After freeze-thaw cycle,the mass loss rate was less than 1%,the relative dynamic elastic modulus was greater than 80%,the compressive strength loss rate was less than 5%,th.e influence of silane protective paste on the frost-resisting property is obvious.
作者
罗文
李英军
潘水艳
曹少华
黄驰
LUO Wen LI Yingjun PAN Shuiyan CAO Shaohua HUA NG Chi(The Third Engineer Scientific Research Institute,Luoyang 471023,China Henan Key Laboratory of Special Protective Materials,Luoyang 471023,China Department of Chemistry,Wuhan University,Wuhan 430072, China)
出处
《新型建筑材料》
北大核心
2017年第6期100-103,共4页
New Building Materials
基金
河南省科技创新人才计划(154200510028)
关键词
硅烷防护膏
混凝土
抗氯离子侵蚀
冻融循环
silane protective paste,concrete,chloride corrosion resistance,freeze-thaw cycle
