水化硅酸钙的形貌调控及其在水泥水化中的作用

TQ170; 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....

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Published in华东理工大学学报（自然科学版） Vol. 50; no. 3; pp. 364 - 370
Main Authors 魏婷, 周盛江, 邓最亮, 李林华, 易红玲
Format Journal Article
LanguageChinese
Published 华东理工大学化学与分子工程学院,上海 200237%华东理工大学体育新材料研发中心,上海 200237%上海三瑞高分子材料股份有限公司,上海 200231%中交路建海上工程公司,上海 201114 01.06.2024
Subjects
表面活性剂
hardening performance
硬化性能
水泥水化
水化硅酸钙(C-S-H)
透射电镜
cement hydration
micelle morphology
sufactant
胶束形貌
calcium silicate hydrate(C-S-H)
transmission electron microscope
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Abstract TQ170; 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.
AbstractList TQ170; 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.
Abstract_FL 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-S-H 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.
Author 邓最亮
魏婷
李林华
易红玲
周盛江
AuthorAffiliation 华东理工大学化学与分子工程学院,上海 200237%华东理工大学体育新材料研发中心,上海 200237%上海三瑞高分子材料股份有限公司,上海 200231%中交路建海上工程公司,上海 201114
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Author_FL DENG Zuiliang
YI Hongling
WEI Ting
ZHOU Shengjiang
LI Linhua
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DocumentTitle_FL Calcium Silicate Hydrate Morphology Control and Its Effect on Cement Hydration
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Keywords 表面活性剂
hardening performance
硬化性能
水泥水化
水化硅酸钙(C-S-H)
透射电镜
cement hydration
micelle morphology
sufactant
胶束形貌
calcium silicate hydrate(C-S-H)
transmission electron microscope
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PublicationTitle 华东理工大学学报（自然科学版）
PublicationTitle_FL Journal of East China University of Science and Technology(Natural Science Edition)
PublicationYear 2024
Publisher 华东理工大学化学与分子工程学院,上海 200237%华东理工大学体育新材料研发中心,上海 200237%上海三瑞高分子材料股份有限公司,上海 200231%中交路建海上工程公司,上海 201114
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Title 水化硅酸钙的形貌调控及其在水泥水化中的作用
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