基于包覆性钡盐的混凝土防腐剂性能研究  

Research on performance of concrete anti-corrosion agent based on coated barium salt

作　　者：刘超 马锦贞 王后密 关召帅 方俊 LIU Chao;MA Jinzhen;WANG Houmi;GUAN Zhaoshuai;FANG Jun(CCCC-SHB Fourth Engineering Co.,Ltd.,Luoyang 471013;China Testing&Certification International Group Co.,Ltd.,Beijing 100024;State Key Laboratory of Green Building Materials,China Building Materials Academy Co.,Ltd.,Beijing 100024)

机构地区：[1]中交二公局第四工程有限公司,河南洛阳471013 [2]中国国检测试控股集团股份有限公司,北京100024 [3]中国建筑材料科学研究总院有限公司绿色建筑材料国家重点实验室,北京100024

出　　处：《中国建材科技》2024年第2期21-23,共3页China Building Materials Science & Technology

摘　　要：采用碱性纳米二氧化硅分散液对钡盐进行包覆性处理,基于三种钡盐(氢氧化钡、碳酸钡、硝酸钡)配制盐卤腐蚀抑制剂,与未包覆钡盐类盐卤腐蚀抑制剂进行对比,研究包覆性钡盐盐卤腐蚀抑制剂的抗蚀系数、28d抗压强度比和氯离子扩散系数。结果表明,包覆性钡盐盐卤腐蚀抑制剂可显著提高混凝土的耐蚀性能,其90d抗蚀系数高达1.189,28d抗压强度比高达111.11%,氯离子扩散系数低至2.50×10^(-12)m^(2)/s。Three kinds of barium salts(barium hydroxide,barium carbonate,barium nitrate)are coated with alkaline nano-silica dispersion to prepare brine corrosion inhibitors.The corrosion resistance coefficient,28-day compressive strength ratio and chloride ion diffusion coefficient of concrete samples mixed with coated barium salt brine corrosion inhibitor are studied,comparing with those mixed with uncoated barium salt brine corrosion inhibitor.The results show that the coated barium salt brine corrosion inhibitor can significantly improve the corrosion resistance of concrete,and the 90-day corrosion resistance coefficient is 1.189,28-day compressive strength ratio is 111.11%,and 28-day chloride ion diffusion coefficient is only 2.50×10^(-12)m^(2)/s。

关 键 词：盐卤腐蚀抑制剂 钡盐 抗蚀系数 氯离子扩散系数 

分 类 号：TU528[建筑科学—建筑技术科学]