Corrosion behavior of steel bar embedded in fly ash concrete

被引：145
|
作者：
Choi, Yoon-Seok
Kim, Jung-Gu
Lee, Kwang-Myong
机构：
[1] Sungkyunkwan Univ, Dept Adv Mat Engn, Suwon 440746, South Korea
[2] Sungkyunkwan Univ, Dept Civil & Environm Engn, Suwon 440746, South Korea
来源：
CORROSION SCIENCE | 2006年 / 48卷 / 07期
关键词：
corrosion; fly ash; chloride ion; permeability; EIS;
D O I：
10.1016/j.corsci.2005.05.019
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
Steel bar embedded in concrete Without fly ash and with fly ash was tested under complete immersion, in 3.5wt.% NaCl solution. Monitoring of open-circuit potential, polarization resistance measurement and electrochemical impedance spectroscopy (EIS) were used to evaluate the corrosion behavior of steel bar. ASTM C1202 test method was also used to estimate the concrete's resistance to the penetration of chloride ions. The results obtained from electrochemical tests show that partial replacement of fly ash has led to an enhancement of corrosion resistance and a reduction of corrosion rate due to the decrease of permeability to chloride ions. (c) 2005 Elsevier Ltd. All rights reserved.
引用
收藏
页码：1733 / 1745
页数：13
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