硅酸盐水泥-富铝材料复合体系Cl-结合能力的研究进展

摘要/Abstract

摘要： 氯离子(Cl^-)引起的锈蚀是影响钢筋混凝土使用寿命的主要问题。硅酸盐水泥-富铝材料(粉煤灰、矿渣等)复合体系可以有效结合Cl^-,提高钢筋混凝土抵抗Cl^-侵蚀的能力,成为当前的研究热点。然而,现有研究对硅酸盐水泥-富铝材料复合体系Cl^-结合能力的横向对比较为缺乏。本文首先介绍了Cl^-在水泥体系中的结合机理,重点总结了不同硅酸盐水泥-富铝材料复合体系的Cl^-结合能力,并以Al₂O₃含量作为主要变量横向对比了现有研究中复合体系的Cl^-结合能力。同时,阐述并分析了影响复合体系Cl^-结合能力的多方面因素。最后,为后续研究提供了更为准确地衡量与对比多种硅酸盐水泥-富铝材料复合体系Cl^-结合能力的参考方案,同时为设计新型高性能硅酸盐水泥-富铝材料复合体系提供理论基础。

关键词: 富铝材料, Cl^-结合能力, 硅酸盐水泥, 粉煤灰, 矿渣, 偏高岭土, 硫铝酸盐水泥, 铝酸盐水泥

Abstract: Chloride (Cl^-) corrosion is the main problem affecting the service life of reinforced concrete. Because Portland cement and aluminium-rich material (fly ash, slag, etc.) composite systems effectively bind Cl^- and improve the corrosion resistance of reinforced concrete, they have attracted considerable research attention. However, the horizontal comparison of Cl^- binding capacity of different Portland cement and aluminium-rich material composite systems in existing research is insufficient. First, the process of physical adsorption and chemical binding of chloride in the cement-based system was introduced. Then, Cl^- binding capacity of Portland cement and aluminium-rich material composite systems was summarised, and the Cl^- binding capacity of composite systems in previous publications was compared with Al₂O₃ content as the main variable. In addition, various factors affecting the Cl^- binding capacity of composite systems were described and analysed. Finally, a more accurate scheme for measuring and comparing the Cl^- binding capacity of various Portland cement and aluminium-rich material composite systems for subsequent research was provided, and a theoretical basis for the design of novel high-performance Portland cement and aluminium-rich material composite systems was provided.

Key words: aluminium-rich material, Cl^- binding capacity, Portland cement, fly ash, slag, metakaolin, calcium sulfoaluminate cement, aluminate cement

中图分类号:

TU528
TQ172

张熠爽, 周健, 李辉, 徐名凤. 硅酸盐水泥-富铝材料复合体系Cl^-结合能力的研究进展[J]. 硅酸盐通报, 2023, 42(5): 1672-1687.

ZHANG Yishuang, ZHOU Jian, LI Hui, XU Mingfeng. Research Progress on Cl^- Binding Capacity of Portland Cement and Aluminium-Rich Material Composite Systems[J]. BULLETIN OF THE CHINESE CERAMIC SOCIETY, 2023, 42(5): 1672-1687.

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