摘要
Abstract
In order to improve the durability of civil air defense concrete,the effects of carbonization time and cycle times on chloride ion con-tent,carbonization depth and calcium carbonate content of concrete were analyzed.The results show that the surface depth distribution of free chloride content in concrete includes convection zone,diffusion zone and stable zone.The distribution of calcium carbonate content in the sur-face depth includes the surface floating slurry area,the complete carbonization area,the partial carbonization area and the uncarbonized area.With the increase of the number of cycles,the total carbonization area increased.The order of concrete carbonation depth is 6%NaCl<3%NaCl in clear water,that is,the higher the chloride ion concentration,the stronger the concrete carbonation resistance.关键词
人防工程/混凝土结构/影响因素/抗氯离子性能/碳化性能Key words
Civil air defence engineering/Concrete structure/Influencing factors/Chloride ion resistance/Carbonization property分类
建筑与水利
