水泥与混凝土外加剂适应性研究  

Study on Adaptability of Cement and Concrete Admixtures

作　　者：汪永和[1] 续荣贵[1] 冯春花[2] 

机构地区：[1]江苏博特新材料有限公司,江苏南京210008 [2]南京工业大学材料科学与工程学院,江苏南京210009

出　　处：《江苏建筑》2012年第B12期60-63,共4页Jiangsu Construction

摘　　要：混凝土施工过程中经常遇到外加剂与水泥适应性问题,处理不好会使新拌混凝土工作性能下降。文章通过测定水泥净浆流动度来分析水泥细度、外加剂类型、石膏晶型以及水泥新鲜温度等因素对两者适应性的影响,结果表明,外加剂种类、水泥温度、石膏晶型等均对水泥流动性有较大的影响,水泥中二水石膏含量越多,净浆流动度越大。The problem of adaptability between concrete admixtures and cement occurs occasionally in the concretemaking process. If handled improperly, the workability of the fresh concrete will be reduced. By flu idity test for cement paste, the paper discusses the effect of some factors such as cement fineness, additive types, gypsum crystal structure and the fresh cement temperature on adaptability between concrete admixtures and cement. The results indicated that the types of admixtures, the temperature of fresh cement and the crystal of gypsum have the great impact on the fluidity of cement, and the higher the CaS042H20 content in cement, the bigger the fluidity of cement paste.

关 键 词：水泥 外加剂 石膏晶型 水泥温度 

分 类 号：TU528.042[建筑科学—建筑技术科学]