新型泛碱抑制剂的制备及应用  

Preparation and application of new efflorescence inhibitors

作　　者：李朗 张玉玮 高育慧 郑卫国 LI Lang;ZHANG Yuwei;GAO Yuhui;ZHENG Weiguo(Guangdong Wenke Green Technology Co.Ltd.,Foshan 528300,China;Guangdong Landscape and Ecological Restoration Engineering Technology Research Center,Shenzhen 518000,China)

机构地区：[1]广东文科绿色科技股份有限公司,广东佛山528300 [2]广东省园林景观与生态恢复工程技术研究中心,广东深圳518000

出　　处：《新型建筑材料》2025年第1期97-101,共5页New Building Materials

基　　金：深圳市住房和建设局课题;2022年深圳市工程建设领域科技计划项目。

摘　　要：为研究可溶性金属盐对水泥的泛碱抑制效果,配制了氯化镁的水溶液和乙醇溶液、氯化铝的水溶液和乙醇溶液,并分别涂刷在水泥试块表面进行试验,利用Image-pro plus软件进行了水泥试块泛碱程度的定量分析。结果表明:氯化镁溶液和氯化铝溶液均对水泥泛碱有较好的抑制作用,泛碱抑制效果顺序为:50%氯化铝水溶液>45%氯化铝乙醇溶液>30%氯化镁乙醇溶液>30%氯化镁水溶液。XRD表明:可溶性金属盐能和水泥水化产物氢氧化钙发生化学反应,生成难溶性沉淀,吸附在水泥颗粒表面形成保护层,阻止水泥水化的钙离子从内部迁移析出,从而抑制泛碱现象。In order to study the inhibition effect of soluble metal salt on caustic penetration of cement,this paper prepared an aqueous solution of magnesium chloride,an aqueous solution of ethanol,an aqueous solution of aluminum chloride and an ethanol solution,and carried out a brushing test of cement test blocks respectively.Image-pro plus software was used to conduct a quantitative analysis of the degree of caustic penetration of cement test blocks.The results show that both magnesium chloride solution and aluminum chloride solution have a good inhibition effect on cement caustic soda.The order of alkaline inhibition effect is:50%aluminum chloride aqueous solution>45%aluminum chloride ethanol solution>30%magnesium chloride ethanol solution>30%magnesium chloride aqueous solution.XRD results show that soluble metal salt can react with cement hydration product calcium hydroxide to form insoluble precipitation,which is adsorbed on the surface of cement particles to form a protective layer to prevent cement hydrated calcium ions from migrating out from the interior,thus inhibiting the caustic phenomenon.

关 键 词：泛碱 氯化镁 氯化铝 Image-pro plus软件 氢氧化铝 

分 类 号：TU528.042[建筑科学—建筑技术科学]