预制免蒸养混凝土早强剂的研究及应用  

Research and Application of Early Strength Agent for Prefabricated Non steam Curing Concrete

作　　者：张华 桂根生 胡德 段汶宏 陈银 

机构地区：[1]四川华西绿舍建材有限公司,四川成都610051

出　　处：《混凝土世界》2022年第11期54-58,共5页China Concrete

摘　　要：本文采用单因素分析法和正交分析法,研究了早强剂对水泥胶砂强度的影响。结果表明,无机早强剂对水泥胶砂强度显著性影响为:偏铝酸钠>硝酸钙>硫氰酸钠>硫代硫酸钠;有机早强剂对水泥胶砂强度显著性影响为:甲酸钙>甲酸钠>甲基丙烯酸;复合早强剂优化配方方案为:偏铝酸钠(0.2%),甲酸钠(0.6%),硫氰酸钠(0.9%),三乙醇胺(0.02%),能够达到混凝土施工和易性和预制构件脱模强度要求。The influence of early strength agent on the strength of cement mortar is studied by single factor analysis and orthogonal analysis.The results show that the order of the influence of inorganic early strength agent on the strength of cement mortar is:sodium metaaluminate>calcium nitrate>sodium thiocyanate>sodium thiosulfate;the significant effect of organic early strength agents on the strength of cement mortar is:calcium formate>sodium formate>methacrylic acid;the optimized formula scheme of the composite early strength agent is:sodium metaaluminate(0.2%),sodium formate(0.6%),sodium thiocyanate(0.9%),triethanolamine(0.02%),which can meet the requirements of concrete construction workability and compressive strength.

关 键 词：复合早强剂 装配式建筑 混凝土 

分 类 号：TU528[建筑科学—建筑技术科学]