Proceedings of the KIEE Conference (대한전기학회:학술대회논문집)
- 2005.07c
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- Pages.1873-1875
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- 2005
Studies on the influence of zinc oxide as an inhibitor for the corrosion of mild steel in simulated concrete environments
콘크리트 환경에서 ZnO의 철근 부식 억제에 관한 연구
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Ha, Tae-Hyun
(Korea Electrotechnology Research Institute) ;
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Bae, Jeong-Hyo
(Korea Electrotechnology Research Institute) ;
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Lee, Hyun-Goo
(Korea Electrotechnology Research Institute) ;
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Kim, Dae-Kyeong
(Korea Electrotechnology Research Institute) ;
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Ha, Yoon-Cheol
(Korea Electrotechnology Research Institute)
- Published : 2005.07.18
Abstract
The effect of zinc oxide as an inhibitor for the corrosion of steel in concrete environment was studied by weight loss measurements, potential-time behaviour and anodic polarization technique. The salient features of the investigation were: in 100% OPC extracts, the passivity of steel was readily destroyed, however extracts containing various concentration of zinc oxide, the passivity of steel was maintained even in the presence of 30,000 ppm of chloride. Alkalinity of concrete was maintained by the addition of zinc oxide. The efficiency of the inhibitor was found to increase with increasing inhibitor concentration. Addition of zinc oxide in the range 3 to 4% by weight of cement was sufficient to protect the rebars.
Keywords