【摘要】 混凝土中钢筋锈蚀和混凝土保护层锈胀开裂是钢筋混凝土结构使用极限状态的重要标志,是决定钢筋混凝土结构保护层厚度取值的重要条件。通过混凝土中钢筋开始锈蚀条件的研究和混凝土保护层锈胀开裂条件的研究,建立了碳化腐蚀条件下混凝土最小保护层厚度的确定方法。经过大量计算,分析了影响大气环境条件下混凝土最小保护层厚度取值的因素,给出了我国几个典型城市混凝土最小保护层厚度的分析结果。更多还原

【Abstract】 Reinforcement corrosion and concrete cover cracking are primary indications of serviceability limit state for reinforced concrete structures.They are the primary factors that influence the selection of concrete cover depth for reinforced concrete structures.Based on a study of reinforcement corrosion criterion and cracking criterion,a method for determining minimal concrete cover depth is presented in this paper.Through extensive calculations,the main influencing factors to minimal concrete cover depth are analyzed,and the minimal concrete cover depths for some cities in China are provided.更多还原