海洋盐雾环境下混凝土中氯离子传输研究进展

摘要/Abstract

摘要： 氯离子传输是影响海洋工程钢筋混凝土服役寿命的关键因素。海洋大气中的氯离子可导致钢筋严重锈蚀,使混凝土结构的承载力降低和耐久性退化,严重威胁海洋工程钢筋混凝土结构的服役安全。但盐雾环境下的氯离子在混凝土中的传输机制极为复杂,呈多因素特征,需精确的盐雾试验来研究,并需要针对性更强的模型来描述其传输行为。鉴于此,本文对国内外盐雾环境下混凝土中氯离子传输的研究现状进行了系统综述,总结了海洋盐雾环境下探究混凝土中氯离子侵蚀的试验方法,讨论了影响氯离子传输的因素,归纳了氯离子传输模型,为海洋大气环境下钢筋混凝土结构的工程实践及科学研究提供借鉴和参考。

关键词: 盐雾环境, 混凝土, 氯离子传输, 测试方法, 影响因素, 传输模型

Abstract: Chloride ion transport is the critical factor affecting the service life of reinforced concrete under marine environment. The chloride ion under marine atmospheric environment causes severely reinforcement corrosion, leading to the reduction of load-bearing capacity and degradation of durability for concrete structures, and posing a severely threat to service life of reinforced concrete structures under marine environment. However, the transport mechanism of chloride ion in concrete under salt spray environment is extremely complex, showing a multi-factor characteristic. Therefore, the more precise salt spray test is need to study, and the targeted model should be established to characterize the transport behavior of chloride ion in concrete. In this paper, the research progress of chloride ion transport in concrete under salt spray environment was systematically reviewed. The test methods of chloride ion erosion in concrete under salt spray environment were summarized,and the influence factors of chloride ion transport were disscussed. The chloride ion transport models were concluded. The paper can provide references for engineering practice and scientific research of reinforced concrete structure under marine atmospheric environment.

Key words: salt spray environment, concrete, chloride ion transport, testing method, influence factor, transport model

中图分类号:

TU528

修建得, 金祖权, 李宁, 侯保荣. 海洋盐雾环境下混凝土中氯离子传输研究进展[J]. 硅酸盐通报, 2023, 42(3): 771-785.

XIU Jiande, JIN Zuquan, LI Ning, HOU Baorong. Research Progress of Chloride Ion Transport in Concrete under Marine Salt Spray Environment[J]. BULLETIN OF THE CHINESE CERAMIC SOCIETY, 2023, 42(3): 771-785.

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