Effect of Electrical Injection of Corrosion Inhibitor on the Corrosion of Steel Rebar in Chloride-Contaminated Repair Mortar
Joint Authors
Nguyen, The Huyen
Nguyen, Tuan Anh
Nguyen, Thien Vuong
Le, Van Khu
Dinh, Thi Mai Thanh
Thai, Hoang
Shi, Xianming
Source
International Journal of Corrosion
Issue
Vol. 2015, Issue 2015 (31 Dec. 2015), pp.1-10, 10 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2015-11-18
Country of Publication
Egypt
No. of Pages
10
Main Subjects
Abstract EN
The electrical rehabilitation treatments of repair mortar were performed with tetrabutylammonium bromide salt (TBAB) at an electrical current density of 5 A/m2, using two electrolytes (0.1 M NaOH and 0.1 M Na3BO3 solutions), and for two time periods (1 and 4 weeks), respectively.
The average organic cation-based inhibitor’s concentration in cement mortars before and after this treatment was quantified using the UV-Vis spectroscopy.
The experimental results reveal that the EICI treatment with 0.1 M Na3BO3 was more effective in injecting the inhibitor and in improving the chloride penetration resistance and compressive strength of the mortar, relative to using 0.1 M NaOH as electrolyte.
In this case, after the 4-week EICI treatment, [TBA+] contents were 2.3 % and 2.4% by mass of cement mortar for uncontaminated and salt-contaminated mortars, respectively.
After the 4-week EICI treatment, the apparent diffusion coefficients of chloride anion in cement mortar were decreased by 40% from 1.52 × 10−10 m2/s.
The EICI treatment was able to halt the chloride-induced corrosion of the steel rebar by promoting its passivation.
The 2-week EICI treatment using sodium hydroxide and sodium borate solutions decreased the corrosion current density of the rebar by 77.8% and 78.5%, respectively, approximately two months after the treatment.
American Psychological Association (APA)
Nguyen, The Huyen& Nguyen, Tuan Anh& Nguyen, Thien Vuong& Le, Van Khu& Dinh, Thi Mai Thanh& Thai, Hoang…[et al.]. 2015. Effect of Electrical Injection of Corrosion Inhibitor on the Corrosion of Steel Rebar in Chloride-Contaminated Repair Mortar. International Journal of Corrosion،Vol. 2015, no. 2015, pp.1-10.
https://search.emarefa.net/detail/BIM-1065317
Modern Language Association (MLA)
Nguyen, The Huyen…[et al.]. Effect of Electrical Injection of Corrosion Inhibitor on the Corrosion of Steel Rebar in Chloride-Contaminated Repair Mortar. International Journal of Corrosion No. 2015 (2015), pp.1-10.
https://search.emarefa.net/detail/BIM-1065317
American Medical Association (AMA)
Nguyen, The Huyen& Nguyen, Tuan Anh& Nguyen, Thien Vuong& Le, Van Khu& Dinh, Thi Mai Thanh& Thai, Hoang…[et al.]. Effect of Electrical Injection of Corrosion Inhibitor on the Corrosion of Steel Rebar in Chloride-Contaminated Repair Mortar. International Journal of Corrosion. 2015. Vol. 2015, no. 2015, pp.1-10.
https://search.emarefa.net/detail/BIM-1065317
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-1065317