中国工程科学2011，Vol.13Issue(9)：69-75,7.
掺梳形减水剂水泥浆体早期水化产物形貌研究
Investigation on early hydrates of cement pastes superplasticized by comb-type copolymer
摘要
Abstract
The aim of this paper is to find out regularity of comb-type water reducers effect on early hydra-tion of cement and to guide engineering applications of comb-type water reducers. Microstructures of early hydrates of cement superplasticized by three typical polycarboxylates were observed by SEM, and the electronic characteristic data of cement hydrates were analyzed. It is found that comb-type water reducers can accelerate hydration rate of cement minerals. Moreover, acrylic acid based copolymer promotes formation of ettringite, and maleic anhydrite based copolymer speeds up formation of monosulfoaluminate. Therefore, early hydration of cement and engineering properties of concrete are dominated by the kind of comb-type water reducers. Suitable choice should be made according to application requirements of concrete engineering, and modification should be done by blending retarders, air entraining agent or defoaming agent if needed.关键词
梳形减水剂/水泥水化/钙矾石/微观形貌Key words
comb-type water reducer/ cement hydration/ ettringite/ microstructure分类
建筑与水利引用本文复制引用
蒋亚清..掺梳形减水剂水泥浆体早期水化产物形貌研究[J].中国工程科学,2011,13(9):69-75,7.基金项目
江苏省高技术研究资助课题(BG2005004) （BG2005004）
