Proceedings of the Korean Institute of Building Construction Conference (한국건축시공학회:학술대회논문집)

The Korean Institute of Building Construction (한국건축시공학회)
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Hybrid Corrosion Inhibitor-Based Zwitterions and Phosphate in Reinforced Concrete: Determining Chloride Threshold and Service Life

철근 콘크리트의 Zwitterion 및 인산염 기반 하이브리드 부식 억제제: 염화물 임계값 및 사용 수명 결정

  • Tran, Duc Thanh (Hanyang University, Department of Smart City Engineering) ;
  • Jeong, Min-Goo (Hanyang University, Department of Smart City Engineering) ;
  • Lee, Han-Seung (Hanyang University, Department of Architectural Engineering) ;
  • Yang, Hyun-Min (Hanyang University, Department of Architectural Engineering) ;
  • Singh, Jitendra Kumar (Hanyang University, Department of Architectural Engineering)
  • Published : 2023.05.17
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Abstract

Corrosion of reinforcement steel is a major cause of deterioration in reinforced concrete (RC) structures. In order to protect these structures from corrosion, corrosion inhibitors are added to the concrete mix. In recent years, zwitterionic compounds have shown promising results as corrosion inhibitors in concrete due to their ability to form a protective layer on the surface of the reinforcement steel. The experimental study involves preparing concrete samples with different concentrations of adding the hybrid corrosion inhibitor at a high concentration of chloride ions. This study aims to determine the chloride threshold value and service life of hybrid corrosion inhibitors in reinforced concrete based on zwitterions. The samples are subjected to accelerated corrosion tests in a chloride environment to determine the threshold value and service life of the corrosion inhibitor. The effect of hybrid inhibitor on mechanical properties is guaranteed in allowable range. The chloride threshold concentration and service life of hybrid inhibitor containing samples perform greater than those of plain RC.

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Acknowledgement

This research was supported by the National Research Foundation of Korea (NRF) grant funded by the Korea government (MSIT) (No. NRF-2022R1A2C1093253).