链状醇胺对硅酸盐水泥性能的影响研究  

Research on the effect of chain alcohol amine on properties of Portland cement

作　　者：刘春舵 刘凯 宁朝阳 郭政 赵长龙 周刚 LIU Chunduo;LIU Kai;NING Zhaoyang;GUO Zheng;ZHAO Changlong;ZHOU Gang(China Overseas Construction Ltd.,Shenzhen 518000,China;Guizhou Leirong Expressway Investment Management Co.Ltd.,Qiandongnan 556000,China;Jiangsu Sobute New Materials Co.Ltd.,State Key Laboratory of High Performance Civil Engineering Material,Nanjing 211103,China)

机构地区：[1]中海建筑有限公司,广东深圳518000 [2]贵州雷榕高速公路投资管理有限公司,贵州黔东南556000 [3]江苏苏博特新材料股份有限公司,高性能土木工程材料国家重点实验室,江苏南京211103

出　　处：《新型建筑材料》2025年第3期42-47,共6页New Building Materials

基　　金：江苏省自然科学基金项目(BK20221550);中海建筑有限公司科研项目(GZ-KL-005/DSC/X069)。

摘　　要：通过净浆凝结时间、抗压强度、水化热、硬化水泥浆体XRD、微观结构SEM及氮吸附孔隙率测试,研究了链状醇胺(CS)对硅酸盐水泥性能、水化及微观结构的影响。结果表明:CS对硅酸盐水泥具有显著的缓凝作用,掺量越高缓凝作用越强;当CS掺量(按占水泥质量计)为0.6%时,水泥28 d抗压强度相比于未掺时增幅达10.0%,力学性能明显提高;微观分析表明,掺入0.6%CS促进了氢氧化钙生成、优化了水化产物的分布、降低了孔隙率。In this paper,the effect of chain alcohol amine CS on the performance,hydration and microstructure of Portland cement was explored from the setting time,strength,hydration heat,hardened cement paste XRD,microstructure SEM and nitrogen adsorption porosity test of clean paste.The results show that chain alcohol amine CS has significant retarding characteristics,and the higher the content,the stronger the retarding property.The mechanical properties of cement paste can be significantly improved when the content of CS is 0.6%based on the mass of the cement,and the strength increase in 28 days reaches 10.0%.In the microscopic aspect,CS content of 0.6%can significantly promote the formation of hydration product calcium hydroxide,improve the hydration degree of cement mineral phase,improve the distribution of hydration products,and lower the porosity.

关 键 词：链状醇胺 凝结时间 强度 孔隙 微观结构 

分 类 号：TU528.042[建筑科学—建筑技术科学]