摘要
选取滨海地区两座具有代表性的钢筋混凝土结构,结合工程实际和环境特点进行测试,在典型部位抽取芯样,检测了大气氯离子在混凝土结构的累计沉积量,结果表明大气氯离子在混凝土结构中的沉积作用明显,两个工程的氯离子沉积量都偏大,均超过了引发锈蚀的氯离子临界浓度;实际工程中大气氯离子沉积的变化趋势,是渗透和毛细两种因素综合作用的结果。
The experiment selected the two representative reinforced concrete structures in coastal area,with the combination of engineering and environmental characteristics,core samples in the typical position were taken to detect the accumulated deposition of atmospheric chloride ions in the concrete structures.The results show that the atmospheric chloride ions in the concrete structures play a significant role,the chloride ion depositions of the two structures are higher than the critical concentration of chloride ions,and that for the actual structure the trend in the atmospheric deposition of chloride ions is the combination of two effects of permeation and capillary action.
出处
《建筑科学》
北大核心
2009年第3期32-34,27,共4页
Building Science
基金
国家自然基金项目重点项目(50538060)
深圳大学科研启动基金资助项目(200837)
教育部新世纪优秀人才支持计划NCET-05-0748
关键词
滨海环境
大气氯离子
混凝土结构
沉积
coastal environment
atmospheric chloride ion
concrete structure
deposition
