Chloride transference during electrochemical chloride extraction process

被引：0

作者：

YAO Wu ZHAO Zheng Key Laboratory of Advanced Civil Engineering Materials Tongji UniversityMinistry of Education of ChinaShanghai China ^{[200092
]}

机构：

来源：

Science China(Technological Sciences) | 2010年 / 06期

关键词：

electrochemical chloride extraction; transference; bound chloride; current density;

D O I：

暂无

中图分类号：

O655.2 [容量分析（滴定分析法）];

学科分类号：

070302 ; 081704 ;

摘要：

Chemical titration method and lab-made chloride probes were jointly adopted to investigate the effects of water-to-cement (W/C) ratio and the impressed current density on chloride transport for cement-based materials during electrochemical chloride extraction (ECE) process.The dissolution of bound chlorides and the effect of current density on dissolution were analyzed.The variations of chloride concentration at different depths and the chloride transference process were monitored.Test results show that W/C ratios adopted have slight influence on chloride extraction,while chloride extraction efficiency is mainly determined by the impressed current density.During ECE process a portion of bound chloride ions dissolved and the amount of bound chlorides released is directly proportional to current density.

引用

页码：1466 / 1470

页数：5

共 5 条

[1] 水灰比与水泥用量对混凝土Cl-结合能力的影响 [J].

翁智财 ;

余红发 ;

孙伟 ;

张金花 ;

陈浩宇 .

武汉理工大学学报, 2006, (03) :47-50

[2] 水灰比、矿物掺合料对混凝土孔隙率的影响 [J].

刘伟 ;

邢锋 ;

谢友均 .

低温建筑技术, 2006, (01) :9-11

[3] Mechanism of electrochemical chloride removal [J].

Elsener, B. ;

Angst, U. .

CORROSION SCIENCE, 2007, 49 (12) :4504-4522

[4] Effectiveness and structural implications of electrochemical chloride extraction from reinforced concrete beams [J].

Swamy, R. N. ;

McHugh, Stephen .

CEMENT & CONCRETE COMPOSITES, 2006, 28 (08) :722-733

[5]

Electro-chemical chloride extraction: Influence of C 3 A of the cement on treatment efficiency[J] . J.C. Orellan Herrera,G. Escadeillas,G. Arliguie.Cement and Concrete Research . 2006 (10)

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