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C-S-H凝胶分子结构研究进展
作者: 博1 2  伟1 
单位:(1. 硅酸盐建筑材料国家重点实验室 武汉理工大学 武汉430070 2. 武汉理工大学材料科学与工程学院 武汉 430070) 
关键词:水化硅酸钙凝胶 分子结构 分子间作用力 固体核磁 第一性原理计算 
分类号:TQ172.1
出版年,卷(期):页码:2019,47(8):0-0
DOI:
摘要:

 水化硅酸钙(C-S-H)凝胶是硅酸盐水泥的主要水化产物,是水泥胶凝能力的主要来源。C-S-H凝胶的纳米结构由长程无序、短程有序的类Tobermorite纳米晶组成。明确类Tobermorite相纳米晶的分子结构、氢键等分子间作用力组成及性质、H2O和羟基基团与硅氧主链的相互作用机理对理解C-S-H凝胶的胶凝能力形成机理、调控水化产物的胶凝能力具有重要意义。本文在总结固体核磁共振分析技术研究C-S-H凝胶硅氧主链结构研究进展的基础上,提出其钙硅比对硅氧主链聚合度和平均链长的影响规律,并运用固体核磁测试与第一性原理计算核磁结果相结合的研究方法,揭示了C-S-H凝胶分子结构中氢键的组成及性质,明确了水分子及羟基基团与硅氧主链的相互作用机理。

基金项目:
国家自然科学基金(51672199),中央高校基本科研业务费(2017-YB-008)资助项目。
作者简介:
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