水泥基材料氯离子结合机理及影响因素研究综述

硅酸盐通报 ›› 2022, Vol. 41 ›› Issue (8): 2604-2617.

水泥基材料氯离子结合机理及影响因素研究综述

耿圆洁^1,2, 孙丛涛^2,3,4, 孙明^2,3, 张余果^2,3,5, 段继周^2,3

1.内蒙古科技大学土木工程学院,包头 014010;
2.青岛海洋科学与技术试点国家实验室海洋腐蚀与防护开放工作室,青岛 266237;
3.中国科学院海洋研究所海洋环境腐蚀与生物污损重点实验室,青岛 266071;
4.南通中科海洋科学与技术研究发展中心,南通 226004;
5.青岛理工大学土木工程学院,青岛 266033

收稿日期:2022-03-19 修回日期:2022-05-12 出版日期:2022-08-15 发布日期:2022-08-30
通讯作者: 孙丛涛,博士,高级工程师。E-mail:suncongtao@qdio.ac.cn
作者简介:耿圆洁(1997—),女,硕士研究生。主要从事钢筋混凝土耐久性研究。E-mail:1546585271@qq.com
基金资助:
山东省自然科学基金(ZR2020KE046);国家重大科研仪器研制项目(41827805);南通市科技项目(JC2020125)

Review on Mechanism of Chloride Ion Binding and Its Influencing Factors in Cement-Based Materials

GENG Yuanjie^1,2, SUN Congtao^2,3,4, SUN Ming^2,3, ZHANG Yuguo^2,3,5, DUAN Jizhou^2,3

1. School of Civil Engineering, Inner Mongolia University of Science and Technology, Baotou 014010, China;
2. Open Studio for Marine Corrosion and Protection, Pilot National Laboratory for Marine Science and Technology (Qingdao), Qingdao 266237, China;
3. Key Laboratory of Marine Environmental Corrosion and Bio-fouling, Institute of Oceanology, Chinese Academy of Sciences, Qingdao 266071, China;
4. Nantong Research and Development Center of Marine Science and Technology, Institute of Oceanology, Chinese Academy of Sciences, Nantong 226004, China;
5. School of Civil Engineering, Qingdao University of Technology, Qingdao 266033, China

Received:2022-03-19 Revised:2022-05-12 Online:2022-08-15 Published:2022-08-30

摘要/Abstract

摘要： 水泥基材料的氯离子结合能力主要取决于水化硅酸钙(C-S-H)凝胶和Friedel's盐的含量及其稳定性,两者的含量越高、稳定性越好,水泥基材料的氯离子结合能力越强。对水泥基材料氯离子结合能力的分析需考虑多种因素的影响,如水泥种类、矿物掺合料种类、温度、氯离子浓度、阳离子类型、硫酸盐侵蚀和碳化等因素,它们会通过直接影响C-S-H凝胶和Friedel's盐的生成量,或间接影响孔隙液pH值和离子浓度改变C-S-H凝胶和Friedel's盐的稳定性,进而影响其物理吸附能力与化学结合能力,促使氯离子重新结合或释放,导致氯离子结合能力变化显著。本文综述了上述影响因素下,水泥基材料中C-S-H凝胶和Friedel's盐含量、稳定性的变化,及其对氯离子结合能力的影响,并为今后的研究方向提出了建议。

关键词: 水泥基材料, C-S-H凝胶, Friedel's盐, 氯离子结合, 稳定性, pH值

Abstract: The chloride ion binding ability of cement-based materials mainly depends on the content and stability of hydrate calcium silicate (C-S-H) gel and Friedel's salt, and the high content and the great stability of both are benefit to improve the chloride ion binding ability. The influences of various factors, such as cement type, mineral admixture type, temperature, chloride ion concentration, cation type, sulfate erosion and carbonization should be considered in the analysis of the chloride ion binding ability of cement-based materials. They will directly affect the production of C-S-H gel and Friedel's salt, or indirectly affect the pH value and ion concentration of pore fluid to change the stability of C-S-H gel and Friedel's salt, thus affecting their physical adsorption ability and chemical binding ability, and promoting the recombination and release of chloride ions, eventually, causing significant change in chloride ions binding ability. In this paper, the changes of C-S-H gel and Friedel's salt content and stability in cement-based materials under the above factors, as well as their influences on chloride ion binding ability were reviewed, and some suggestions for future research were put forward.

Key words: cement-based material, C-S-H gel, Friedel's salt, chloride ion binding, stability, pH value

中图分类号:

TU528.04

耿圆洁, 孙丛涛, 孙明, 张余果, 段继周. 水泥基材料氯离子结合机理及影响因素研究综述[J]. 硅酸盐通报, 2022, 41(8): 2604-2617.

GENG Yuanjie, SUN Congtao, SUN Ming, ZHANG Yuguo, DUAN Jizhou. Review on Mechanism of Chloride Ion Binding and Its Influencing Factors in Cement-Based Materials[J]. BULLETIN OF THE CHINESE CERAMIC SOCIETY, 2022, 41(8): 2604-2617.

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