作　　者： ; ; ;

机构地区： 深圳大学土木工程学院深圳市土木工程耐久性重点实验室

出　　处： 《建筑科学》 2009年第3期32-34,27,共4页

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.

关 键 词： 滨海环境 大气氯离子 混凝土结构 沉积

领　　域： [建筑科学] [建筑科学]