The effect of carbonate and sulfate ions on chloride threshold level of reinforcement corrosion in mortar with/without fly ash

被引：41

作者：

Liu, Rong ^{[1
,2
]}

Jiang, Linhua ^{[1
]}

Huang, Guohong ^{[2
]}

Zhu, Yeran ^{[2
]}

Liu, Xingrong ^{[2
]}

Chu, Hongqiang ^{[1
]}

Xiong, Chuangsheng ^{[1
]}

机构：

[1] Hohai Univ, Coll Mech & Mat, Nanjing 210098, Jiangsu, Peoples R China

[2] Ruidi High Technol Co, Nanjing Hydraul Res Inst, Nanjing 210024, Jiangsu, Peoples R China

来源：

CONSTRUCTION AND BUILDING MATERIALS | 2016年 / 113卷

关键词：

Reinforcement corrosion; Chloride threshold level; Carbonate; Sulfate; Mortar; CONCRETE PORE SOLUTIONS; STEEL REINFORCEMENT; SALT-TYPE; BINDING;

D O I：

10.1016/j.conbuildmat.2016.03.018

中图分类号：

TU [建筑科学];

学科分类号：

0813 ;

摘要：

The aim of the study is to evaluate the effect of carbonate and sulfate ions on chloride threshold level of reinforcement corrosion in mortar with/without fly ash. The initiation of active corrosion for the reinforcement was detected by half-cell potential and electrochemical impedance spectra methods. The free chloride or total chloride by mass of binder was used to express the chloride threshold level. The results indicate that the presence of carbonate ions in the chloride solution shortened the time to initiation of reinforcement corrosion and decreased chloride threshold level in both the Portland cement mortar and fly ash mortar specimens. And compared with the single chloride solution, the concomitant presence of chloride ions and sulfate ions decreased the chloride threshold level, but did not influence the time to initiation of chloride-induced reinforcement corrosion. Besides, although the presence of fly ash decreased the chloride threshold level, it delayed the time to initiation of reinforcement corrosion. (C) 2016 Elsevier Ltd. All rights reserved.

引用

页码：90 / 95

页数：6

共 31 条

[11] Equivalent circuit for modelling the steel-concrete interface. I. Experimental evidence and theoretical predictions [J].

Feliu, V ;

Gonzalez, JA ;

Andrade, C ;

Feliu, S .

CORROSION SCIENCE, 1998, 40 (06) :975-993

[12]

Holden W.R., 1983, CORROSION REINFORCEM, P143

[13]

[蒋林华 Jiang Linhua], 2013, [河海大学学报. 自然科学版, Journal of Hohai University. Natural Sciences], V41, P32

[14] Influence of chloride salt type on critical chloride content of reinforcement corrosion in concrete [J].

Jiang, Linhua ;

Liu, Rong ;

Mo, Lili ;

Xu, Jinxia ;

Yang, Hu .

MAGAZINE OF CONCRETE RESEARCH, 2013, 65 (05) :319-331

[15] Influence of chloride salt type on threshold level of reinforcement corrosion in simulated concrete pore solutions [J].

Jiang, Linhua ;

Huang, Guohong ;

Xu, Jinxia ;

Zhu, Yeran ;

Mo, Lili .

CONSTRUCTION AND BUILDING MATERIALS, 2012, 30 :516-521

[16]

Jin Zuquan, 2006, Journal of the Chinese Ceramic Society, V34, P630

[17]

Khan C N S A M.S., 1993, THESIS KING FAHD U P

[18] Influence of carbonation on chloride-induced reinforcement corrosion in simulated concrete pore solutions [J].

Liu, Rong ;

Jiang, Linhua ;

Xu, Jinxia ;

Xiong, Chuansheng ;

Song, Zijian .

CONSTRUCTION AND BUILDING MATERIALS, 2014, 56 :16-20

[19] Study of chloride binding and diffusion in GGBS concrete [J].

Luo, R ;

Cai, YB ;

Wang, CY ;

Huang, XM .

CEMENT AND CONCRETE RESEARCH, 2003, 33 (01) :1-7

[20] Chloride-induced corrosion on reinforcing steel: from the fundamentals to the monitoring techniques [J].

Montemor, MF ;

Simoes, AMP ;

Ferreira, MGS .

CEMENT & CONCRETE COMPOSITES, 2003, 25 (4-5) :491-502

← 1 2 3 4 →