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首页 > 过刊浏览>2024年第27卷第12期 >1112-1121. DOI:10.3969/j.issn.1007-9629.2024.12.005
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水化硅酸钙微纳结构及超低温稳定性研究进展
作者:
作者单位:

1.同济大学 先进土木工程材料教育部重点实验室，上海 201804;2.同济大学 材料科学与工程学院，上海 201804

作者简介:

朱新平（1993—），男，江西赣州人，同济大学博士生.E-mail：rainchal@163.com

通讯作者:

蒋正武（1974—），男，安徽潜山人，同济大学教授，博士生导师，博士.E-mail：jzhw@tongji.edu.cn

中图分类号:

TU528

基金项目:

国家自然科学基金资助项目（U22B2076，52078369，52108241）；2021年产业技术基础公共服务平台项目（2021-H029-1-1）；上海市优秀学术带头人计划资助项目（22XD1403300）；中央高校基本科研业务费专项资金资助项目


Research Progress on Micro/Nano-structure and Cryogenic Stability of Calcium-Silicate-Hydrate
Author:
Affiliation:

1.Key Laboratory of Advanced Civil Engineering Materials of Ministry of Education， Tongji University， Shanghai 201804， China;2.School of Materials Science and Engineering， Tongji University， Shanghai 201804， China

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    摘要:

    水化硅酸钙（C-S-H）作为普通硅酸盐水泥的主要水化产物，其微纳结构的稳定性对水泥基材料的强度与耐久性具有显著影响.本文综述了C-S-H分子结构和胶体结构在近几十年来的主要研究进展，进一步概述了C-S-H在超低温环境下的微纳结构稳定性、纳米力学性质稳定性及增强策略的相关研究进展，探讨了目前超低温环境下C-S-H结构研究中存在的关键问题，并对未来进一步的研究方向提出展望.

    Abstract:

    The stability of the micro/nano-structure of calcium-silicate-hydrate（C-S-H）， as the main hydration product of ordinary silicate cement， significantly impacts the strength and durability of cement-based materials.The research progress of C-S-H molecular and colloidal structures in recent decades was reviewed， and the related research progress of micro/nano-structural stability， nano-mechanical property stability， and enhancement strategies of C-S-H under cryogenic environment were further outlined. Several critical issues in the current research of C-S-H structure under cryogenic environments were discussed， and an outlook on further research in this domain was proposed.

    图1 托贝莫来石晶体结构Fig.1 Crystalline structures of tobermotire［12］
    图2 C-S-H硅氧链原子结构Fig.2 Atomistic structure of C-S-H silicate chain［20］
    图3 C-A-S-H 的交联和非交联结构Fig.3 Crosslinked and non-crosslinked structures of C-A-S-H
    图4 C-A-S-H内桥接及层间铝酸盐配合物原子结构Fig.4 Atomistic representations of bridging and interlayer aluminates in C-A-S-H
    图5 C-A-S-H砖块模型的DNA编码示例Fig.5 Examples for the DNA-code description of C-A-S-H brick model［29］
    图6 C-S-H的胶体结构模型Fig.6 Colloidal structure models of C-S-H
    图7 胶体模型示意图Fig.7 Schematic diagrams of colloidal models
    图8 C-（A）-S-H在超低温侵蚀下自下而上的多尺度劣化路径Fig.8 Upscaling degradation pathway of C-（A）-S-Hunder cryogenic attack［44］
    图9 C-（A）-S-H基本胶粒单元在超低温侵蚀下的演变示意图Fig.9 Schematic diagrams of evolution C-（A）-S-H basic colloidal particle units under cryogenic attack
    图1 托贝莫来石晶体结构Fig.1 Crystalline structures of tobermotire［12］
    图2 C-S-H硅氧链原子结构Fig.2 Atomistic structure of C-S-H silicate chain［20］
    图3 C-A-S-H 的交联和非交联结构Fig.3 Crosslinked and non-crosslinked structures of C-A-S-H
    图4 C-A-S-H内桥接及层间铝酸盐配合物原子结构Fig.4 Atomistic representations of bridging and interlayer aluminates in C-A-S-H
    图5 C-A-S-H砖块模型的DNA编码示例Fig.5 Examples for the DNA-code description of C-A-S-H brick model［29］
    图6 C-S-H的胶体结构模型Fig.6 Colloidal structure models of C-S-H
    图7 胶体模型示意图Fig.7 Schematic diagrams of colloidal models
    图8 C-（A）-S-H在超低温侵蚀下自下而上的多尺度劣化路径Fig.8 Upscaling degradation pathway of C-（A）-S-Hunder cryogenic attack［44］
    图9 C-（A）-S-H基本胶粒单元在超低温侵蚀下的演变示意图Fig.9 Schematic diagrams of evolution C-（A）-S-H basic colloidal particle units under cryogenic attack
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朱新平,何倍,汤宇祺,杨振东,蒋正武.水化硅酸钙微纳结构及超低温稳定性研究进展[J].建筑材料学报,2024,27(12):1112-1121

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  • 收稿日期:2024-05-26
  • 最后修改日期:2024-07-04
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