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针对海水的主要侵蚀介质(氯盐和硫酸盐),通过分析国内外关于侵蚀介质与混凝土材料化学反应和物理结晶作用的研究,总结了受腐蚀混凝土的劣化机理。重点介绍了受腐蚀混凝土力学性能(强度、弹性模量等)、本构关系的试验和理论模型研究现状,评述了掺入方式、溶液浓度、侵蚀龄期等对混凝土力学性能的影响,分析了各理论模型的理论基础和使用条件。最后提出了当前受腐蚀混凝土研究中存在的问题和下一步的展望。
Aiming at the main corrosive media (chloride and sulfate) of seawater, the mechanism of degradation of corroded concrete is summarized through the analysis of the domestic and foreign researches on the chemical reaction and physical crystallization of erosion media and concrete materials. The research status of mechanical properties (strength, elastic modulus, etc.) Of corroded concrete, constitutive relation and theoretical model are mainly introduced. The influence of mixing mode, solution concentration and erosion age on the mechanical properties of concrete is reviewed. Theoretical basis of each theoretical model and conditions of use. Finally, the existing problems in the corroded concrete research and the prospects of the next step are put forward.