文献类型：期刊文献

中文题名：水化硅酸钙的形貌调控及其在水泥水化中的作用

英文题名：Calcium Silicate Hydrate Morphology Control and Its Effect on Cement Hydration

作者：魏婷[1];周盛江[2];邓最亮[3];李林华[4];易红玲[2]

机构：[1]华东理工大学化学与分子工程学院,上海200237;[2]华东理工大学体育新材料研发中心,上海200237;[3]上海三瑞高分子材料股份有限公司,上海200231;[4]中交路建海上工程公司,上海201114

年份：2024

卷号：50

期号：3

起止页码：364

中文期刊名：华东理工大学学报（自然科学版）

外文期刊名：Journal of East China University of Science and Technology

收录：;Scopus;北大核心:【北大核心2023】；CSCD:【CSCD_E2023_2024】；

语种：中文

中文关键词：水化硅酸钙(C-S-H);胶束形貌;水泥水化;透射电镜;表面活性剂;硬化性能

外文关键词：calcium silicate hydrate(C-S-H);micelle morphology;cement hydration;transmission electron microscope;sufactant;hardening performance

摘要：采用化学沉淀法制备无定形、球状、针状、层状等不同形貌的水化硅酸钙(C-S-H),探究了表面活性剂十二烷基苯磺酸钠(SDBS)和十六烷基三甲基溴化铵(CTAB)与C-S-H形貌和结构之间的变化规律,研究了不同形貌的C-S-H对水泥性能的影响。发现当表面活性剂浓度大于临界胶束浓度(CMC)时,水泥水化热与水泥强度之间存在显著相关性。通过C-S-H形貌设计得到不同微观形貌的水泥制品,其增强效果由高到低依次是无定形、球状、针状、层状。该实验结果对于普通水泥的性能改善具有一定的指导意义。
In the cement industry,the morphological control of calcium silicate hydrate(C-S-H)and its impact on cement hardening and hydration are important research topics.This study investigated the impact of template agents on C-S-H morphology and structure.By using chemical precipitation,amorphous,spherical,needle-like,and layered C-SH with the template agents being sodium dodecyl benzene sulfonate(SDBS)and cetyl trimethyl ammonium bromide(CTAB)were prepared.An increase in SDBS concentration resulted in the transformation of the C-S-H morphology from disorderly to spherical,rod-shaped,and vesicular.When CTAB was used,an increased concentration resulted in the transformation of the C-S-H morphology from disorderly to spherical and layered.When the template agent concentration was greater than the critical micelle concentration(CMC),both the C-S-H crystallinity and CMC value decreased.The impact of different C-S-H morphologies on cement performance particularly cement hydration was also evaluated and analyzed.A significant correlation between cement hydration heat and strength was verified.Different microscopic C-S-H morphologies were used to design cement products,allowing the improvement of cement performance to varying degrees.Experimental results would provide an insight into the improvement of the performance of ordinary cement.