南京航空航天大学学报2011，Vol.43Issue(2)：279-282,4.
矿物掺合料对混凝土氯离子扩散行为的时间依赖性的影响
Effect of Mineral Admixtures on Time-Dependence of Concrete Exposed to Chloride Diffusion
摘要
Abstract
The chloride diffusion behavior of the concrete mixed by mineral admixtures and exposed under the condition of high concentration solution is investigated, and the influence of exposing time on the concrete apparent chloride diffusion coefficient is probed by the natural diffusion method. Results show that the concrete apparent chloride diffusion coefficients reduce with the increase of exposing-time and the time-dependence is related to the proportion of mineral admixtures. When the proportions of fly ash and silicon fume reach 30% and 15%, respectively, the apparent chloride diffusion coefficients of fly ash and silicon fume concrete reduce the most quickly with time. Therefore, the long-term ability against chloride corrosion of fly ash concrete or silicon fume concrete is better than that of the ordinary Portland cement concrete.关键词
混凝土/粉煤灰/硅灰/表现氯离子扩散系数/时间依赖性Key words
concrete/ fly ash/ silica fume/ apparent chloride diffusion coefficient/ time-dependence分类
建筑与水利引用本文复制引用
刘俊龙,麻海燕,胡蝶,李强,陈树东..矿物掺合料对混凝土氯离子扩散行为的时间依赖性的影响[J].南京航空航天大学学报,2011,43(2):279-282,4.基金项目
国家重点基础研究发展计划("九七三"计划)(2009CB623203)资助项目 （"九七三"计划）
2008年江苏省"六大人才高峰"高层次人才资助项目 （）
浙江省建设厅科技(1006)资助项目 （1006）
浙江省教育厅科研(y200909029)资助项目. （y200909029）
