无碱液体速凝剂的反应机理与水泥适应性研究  

Study on Reaction Mechanism and Cement Adaptability of Alkali-free Liquid Accelerator

作　　者：聂章运 欧阳会幼 任俊鹏 王毓 韩汝森 NIE Zhang-yun;OUYANG Hui-you;REN Jun-peng;WANG Yu;HAN Ru-sen(School of Chemistry and Materials Science,Guizhou Education University,Guizhou Guiyang 510018;Guizhou Zhongxing Nanyou Building Materials Co.,Ltd.,Guizhou Qingzhen 551400,China)

机构地区：[1]贵州师范学院化学与材料学院,贵州贵阳510018 [2]贵州中兴南友建材有限公司,贵州清镇551400

出　　处：《广州化工》2020年第22期80-82,共3页GuangZhou Chemical Industry

基　　金：省级贵州师范学院大学生创新训练项目(项目编号:20195201020);国家自然科学基金(No.21464005);贵州省自然科学基金(黔科合基础[2018]1122)。

摘　　要：实验以聚合硫酸铝、三乙醇胺为主要原料,合成一种聚合型硫酸铝无碱速凝剂,采用控制变量法探究了速凝剂原料含量不同对其性能的影响,分析得到最佳实验配方。结果表明,当聚合硫酸铝、硫酸铝、硫酸镁、三乙醇胺、氟硅酸镁、三乙醇胺磷酸酯、磷酸含量百分比分别为70%、6%、7%、9%、2%、4%、2%时,速凝剂效果最佳,最好初终凝时间分别为172 s和353 s,1 d和28 d最好抗压强度为分别为3.95 MPa和32.08 MPa。Polyaluminum sulfate and triethanolamine were used as the main raw materials to synthesize a polymerized aluminum sulfate alkali-free accelerator.The controlled variable method was used to explore the influence of different accelerator materials on their performance,and the best experimental formula was obtained by analysis.The results showed that when the content of polyaluminum sulfate,aluminum sulfate,magnesium sulfate,triethanolamine,magnesium fluorosilicate,triethanolamine phosphate,phosphoric were 70%,6%,7%,9%,2%,4%and 2%,the accelerator had the best effect,and the best initial and final setting time was 172 s and 353 s,and the best compressive strength for 1 d and 28 d was 3.95 MPa and 32.08 MPa,respectively.

关 键 词：液体速凝剂 聚合硫酸铝 凝结时间 抗压强度 

分 类 号：TG146[一般工业技术—材料科学与工程]