Acknowledgement
This research was supported by the National Research Foundation of Korea (NRF) grant funded by the Korea government (MSIT) (No. 2015R1A5A1037548).
Proceedings of the Korean Institute of Building Construction Conference (한국건축시공학회:학술대회논문집)
- 2021.11a
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- Pages.65-66
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- 2021
Effect of Hybrid Inhibitor on the Mitigation of Corrosion Initiation in SCP Solution Contaminated 3.5 wt.% NaCl
3.5 wt.% NaCl로 오염된 SCP 용액의 부식 개시 완화에 대한 하이브리드 억제제의 효과
- Tran, Duc Thanh (Hanyang University, Department of Architectural Engineering) ;
- Lee, Han-seung (Hanyang University, Department of Architectural Engineering)
- Published : 2021.11.12
Abstract
In this study, the optimum amount of hybrid inhibitors i.e. L-Arginine (LA) and sodium phosphate tribasic dodecahydrate (SP), applied for carbon steel rebar in simulated pore concrete (SCP) solution contaminated with 3.5 wt.% NaCl, was discovered. The corrosion inhibition performance of hybrid inhibitors was investigated by open circuit potential (OCP), electrochemical impedance spectroscopy (EIS), and potentiodynamic polarization. The highest corrosion inhibition efficiency was found as 99.52% corresponding to 2% LA and 0.25% SP after 210 h exposure. Anodic type inhibition action was confirmed by potentiodynamic polarization study. Surface studies including scanning electron microscopy (SEM), and atomic force microscopy (AFM) were used to figure out the surface morphology of the steel rebar treated with hybrid inhibitors in order to collaborate with electrochemical studies.