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An Electrochemical Study to Evaluate the Effect of Calcium Nitrite Inhibitor to Mitigate the Corrosion of Reinforcement in Sodium Chloride Contaminated Ca(OH)2 Solution
Joint Authors
Park, Won-Jun
Ryu, Hwa-Sung
Lee, Han-Seung
Singh, Jitendra Kumar
Source
Advances in Materials Science and Engineering
Issue
Vol. 2017, Issue 2017 (31 Dec. 2017), pp.1-14, 14 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2017-02-23
Country of Publication
Egypt
No. of Pages
14
Abstract EN
The effect of calcium nitrite (Ca(NO2)2) was assessed by electrochemical means such as open circuit potential (OCP), electrochemical impedance spectroscopy (EIS), and potentiodynamic studies in saturated Ca(OH)2 solution contaminated with 0.99 and 7.91 g/L NaCl.
The preliminary results of OCP showed that the potential is shifted towards positive (noble) side as content of inhibitor increased.
The EIS results indicate that Ca(NO2)2 works effectively in reduction and initiation of corrosion of steel rebar in NaCl contaminated Ca(OH)2 solution.
Potentiodynamic studies revealed the pitting tendency of steel rebar exposed in 0.99 g/L NaCl at [Cl−/ N O 2 - ] = 1.2 attributed to low conductivity of passive film which causes interference for Cl− ions attack during anodic polarization.
The 85.75% efficiency is found in 0.99 g/L at [Cl−/ N O 2 - ] = 1.2.
The Ca(NO2)2 inhibitor transformed the unstable iron oxides/hydroxides into stable and protective oxides/hydroxides due to its strong oxidizing nature.
Therefore, this inhibitor is sufficiently and significantly reducing the corrosion of steel rebar at even its low concentration with 0.99 and 7.91 g/L NaCl solution.
American Psychological Association (APA)
Ryu, Hwa-Sung& Singh, Jitendra Kumar& Lee, Han-Seung& Park, Won-Jun. 2017. An Electrochemical Study to Evaluate the Effect of Calcium Nitrite Inhibitor to Mitigate the Corrosion of Reinforcement in Sodium Chloride Contaminated Ca(OH)2 Solution. Advances in Materials Science and Engineering،Vol. 2017, no. 2017, pp.1-14.
https://search.emarefa.net/detail/BIM-1124400
Modern Language Association (MLA)
Ryu, Hwa-Sung…[et al.]. An Electrochemical Study to Evaluate the Effect of Calcium Nitrite Inhibitor to Mitigate the Corrosion of Reinforcement in Sodium Chloride Contaminated Ca(OH)2 Solution. Advances in Materials Science and Engineering No. 2017 (2017), pp.1-14.
https://search.emarefa.net/detail/BIM-1124400
American Medical Association (AMA)
Ryu, Hwa-Sung& Singh, Jitendra Kumar& Lee, Han-Seung& Park, Won-Jun. An Electrochemical Study to Evaluate the Effect of Calcium Nitrite Inhibitor to Mitigate the Corrosion of Reinforcement in Sodium Chloride Contaminated Ca(OH)2 Solution. Advances in Materials Science and Engineering. 2017. Vol. 2017, no. 2017, pp.1-14.
https://search.emarefa.net/detail/BIM-1124400
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-1124400