甘蔗糖蜜对水泥缓凝和减水的性能研究  

Study on molasses in retarding and water reducing properties of cement pastes

作　　者：刘金芝[1,2] 冉千平[1,2] 张建纲[1,2] 江姜[1,2] 

机构地区：[1]高性能土木工程材料国家重点实验室,江苏南京210008 [2]江苏博特新材料有限公司,江苏南京210008

出　　处：《新型建筑材料》2012年第2期38-41,共4页New Building Materials

摘　　要：甘蔗废糖蜜对水泥同时具有缓凝和减水作用。采用酒精凝聚法分离废糖蜜得到胶体和非胶体组份;从水泥水化热、表面张力以及吸附性能阐述了其对水泥减水和缓凝的原因。结果表明,糖蜜中的胶体组份主要起分散作用,而非胶体组份主要起缓凝作用。Molasses is not only retarding but also water reducing on cement paste. Colloidal component and Non-colloidal component of molasses were separated by alcohol coagulation method. This paper explains the reasons of property of retardation and water reduction of molasses on cement paste by way of cement hydration heat, surface tension and adsorption performance. All studies show that colloidal component of molasses is mainly for dispersion and that Nan-colloidal component is mainly for retardation.

关 键 词：胶体 非胶体 水泥水化 缓凝 减水 

分 类 号：TU528.042.3[建筑科学—建筑技术科学] TU528.042.2