中国粉体技术2012，Vol.18Issue(4)：51-56,6.DOI:10.3969/j.issn.1008-5548.2012.04.013
双层钢筋混凝土的电化学脱盐研究
Electrochemical Chloride Extraction of Concrete with Two Layers of Steel Rebars
摘要
Abstract
The influences of mass ratio of water and cement, chloride content and cover thickness on the electrochemical chloride extraction (ECE) of Portland cement concrete were investigated, and the mechanical properties was discussed as well. The phase composition and morphology of hydration products of concrete desalting for different time was analyzed with X ray diffraction. The content of chloride in different depths and variation trend were analyzed. The results indicate that the efficiency of ECE is determined by the concrete density, chloride concentration gradient and electric field intensity. The electrochemical desalting efficiency increases with the increasing of mass ratio of water and cement, but the effect of the cover thickness is opposite. It is the concentration gradient and the electric flux that determinates the effect of desalting efficiency. The electrochemical desalting can be used as an effective method to improve the durability of reinforced concrete.关键词
混凝土/电化学脱盐/耐久性/钢筋/氯离子Key words
concrete/ electrochemical chloride extraction/ durability/ steel rebar/ chloride ions分类
建筑与水利引用本文复制引用
丁铸,董必钦,张鸣,邢锋..双层钢筋混凝土的电化学脱盐研究[J].中国粉体技术,2012,18(4):51-56,6.基金项目
国家自然科学基金项目,编号:51172146 （）
国家杰出青年科学基金项目,编号:50925829 （）
广东省自然科学基金研究团队项目,编号:9351806001000001. （）
