钢筋混凝土中防腐添加剂的研究进展

摘要/Abstract

摘要： 在钢筋混凝土结构服役过程中,由环境侵蚀因素导致的耐久性问题是制约结构长效服役的重要原因,其中,氯离子侵蚀导致的钢筋锈蚀是引起钢筋混凝土耐久性劣化的主要因素之一。在混凝土内掺加防腐添加剂,可从促进钢筋表面成膜和改善混凝土自身性能(孔隙结构、水化过程、Friedel’s盐生成)等方面提升阻锈能力,近年来逐渐成为研究热点。本文将防腐添加剂分为传统阻锈剂、绿色植物提取物阻锈剂、纳米材料以及矿物掺合料等四类,从材料开发、作用机制、阻锈影响因素等方面对防腐添加剂的研究进行了综述。最后,探讨了防腐添加剂研究中存在的问题,并对未来的研究提出了建议,以期为防腐添加剂能够更好地防治混凝土中的钢筋锈蚀问题提供参考。

关键词: 钢筋混凝土, 防腐添加剂, 钢筋锈蚀, 阻锈剂, 纳米材料, 矿物掺合料, 氯离子侵蚀

Abstract: The durability problem caused by environmental erosion factors is an important reason that restricts the long-term service of reinforced concrete structures. Among them, the corrosion of steel bar caused by chloride erosion is one of the main factors causing the durability problem. The addition of anti-corrosion additives can improve the rust resistance by promoting film formation on the surface of steel bar and improving the properties of concrete (pore structure, hydration process, Friedel’s salt generation), which has gradually become a research hotspot in recent years. In this paper, the anti-corrosion additives were divided into four categories: traditional corrosion inhibitor, green plant extract corrosion inhibitor, nano materials and mineral admixtures. The research on anti-corrosion additives was reviewed from the aspects of material development, action mechanism and influence factors of corrosion inhibition. Finally, the shortcomings in the research of anti-corrosion additives were analyzed, and the suggestions for future research were put forward, in order to provide a reference for the prevention and control of steel bar corrosion in concrete.

Key words: reinforced concrete, anti-corrosion additive, corrosion of steel bar, corrosion inhibitor, nano material, mineral admixture, chloride erosion

中图分类号:

TU528

徐宁, 杨恒, 熊传胜, 张栋, 蒋鹏, 刘璨, 刘欣昕, 程星燎. 钢筋混凝土中防腐添加剂的研究进展[J]. 硅酸盐通报, 2023, 42(1): 1-21.

XU Ning, YANG Heng, XIONG Chuansheng, ZHANG Dong, JIANG Peng, LIU Can, LIU Xinxin, CHENG Xingliao. Research Progress of Anti-Corrosion Additives in Reinforced Concrete[J]. BULLETIN OF THE CHINESE CERAMIC SOCIETY, 2023, 42(1): 1-21.

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