Journal of the Korea Institute of Building Construction (한국건축시공학회지)

The Korean Institute of Building Construction (한국건축시공학회)
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An Experimental Study on the Application of Cathodic Protection By Applying Zn-Al Metal Spray to an RC Structure

철근콘크리트 구조물에 Zn-Al 금속용사 전기방식 공법의 적용성에 관한 실험적 연구

  • Han, Man-Hae (Weathering Center, Korea Conformity Laboratories) ;
  • Yoo, Jo-Hyeong (School of Architecture & Architectural Engineering, Hanyang University(ERICA Campus)) ;
  • Lim, Young-Chul (Department of Architectural Engineering, Catholic University of Daegu) ;
  • Lee, Han-Seung (School of Architecture & Architectural Engineering, Hanyang University(ERICA Campus))
  • Received : 2010.06.24
  • Accepted : 2010.07.25
  • Published : 2010.10.20
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Abstract

Cathodic Protection has been introduced as a method of protecting metals under the ground or sea from corrosion. Since 1970, it has been applied to reinforced concrete structures as a corrosion protection method. After 1990, it became used around the world, and its usability has been well confirmed. But this method has some problems in terms of construction and economy. To solve these problems, a Cathodic Protection Method using a highly-durable metal spray was developed. First, the specimen was covered with anodic materials (Zn, Al) by using metal spray. The corrosion protection performance was confirmed by measuring the corrosion current of the specimen. Through the experiment, it is possible to confirm that the Cathodic Protection Method using a high metal spray provides effective protection against corrosion to reinforced concrete structures.

희생양극방식은 지하구조물이나 해양환경하에서 구조물의 방식공법으로 소개되어지고 있다. 1970년대 이후, 희생양극방식이 철근콘크리트 구조물에 적용되어지고 있다. 희생양극방식은 전세계적으로 1990년대 이후 그 유효성을 검증되었다. 그러나, 희생양극방식은 시공적이나 경제적인 약간의 문제점을 가지고 있다. 그 문제점을 해결하기 위하여 고 내구성 금속을 용사시키는 희생양극방식이 개발되었다. 양극재(아연, 알루미늄)를 금속용사로 도포하여 실험체를 제작한 후, 실험체의 부식전류를 측정하여 양극재의 방식성능을 확인하였다. 실험결과 철근 콘크리트 구조물을 대상으로 금속용사를 이용한 희생양극방식이 우수한 방식성능을 가지는 것을 알 수 있었다.

Keywords

References

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  1. Corrosion Protection of Steel by Applying a Zn-Sn Metal Spray System vol.14, pp.6, 2014, https://doi.org/10.5345/JKIBC.2014.14.6.505