Corrosion Science and Technology

The Corrosion Science Society of Korea (한국부식방식학회)
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Relationship between the Cathodic Protection of Pipe Buried in Soil and Environmental Factors

토양 매설 배관의 음극방식과 환경인자 간의 상관관계

  • Choi, S.H. (Materials Research Centre for Energy and Clean Technology, School of Materials Science and Engineering, Andong National University) ;
  • Won, S.Y. (Materials Research Centre for Energy and Clean Technology, School of Materials Science and Engineering, Andong National University) ;
  • Yoo, Y.R. (Materials Research Centre for Energy and Clean Technology, School of Materials Science and Engineering, Andong National University) ;
  • Kim, Y.S. (Materials Research Centre for Energy and Clean Technology, School of Materials Science and Engineering, Andong National University)
  • 최승헌 (국립안동대학교 신소재공학부 청정에너지소재기술연구센터) ;
  • 원석연 (국립안동대학교 신소재공학부 청정에너지소재기술연구센터) ;
  • 유영란 (국립안동대학교 신소재공학부 청정에너지소재기술연구센터) ;
  • 김영식 (국립안동대학교 신소재공학부 청정에너지소재기술연구센터)
  • Received : 2022.10.21
  • Accepted : 2022.10.27
  • Published : 2022.11.02
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Abstract

The external corrosion control of buried pipes can be achieved by a combination of coatings and cathodic protection to maximize effectiveness. One of the factors affecting cathodic protection is the environmental soil conditions. Because soil is a kind of electrolyte, the environmental conditions of soil may be changed by the atmospheric environment. Therefore, in this study, changes in environmental soil factors by atmospheric environmental factors were monitored. In cathodic protection, on-potential and off-potential were measured from December 2021 to July 2022. The effects of external environmental factors and soil environmental factors on cathodic protection were analyzed. Changes in outdoor temperature affected soil temperature, and soil conductivity had a proportional relationship with soil humidity, but outdoor humidity and precipitation did not significantly affect humidity and conductivity of the soil. In contrast, in cathodic protection, the on-potential was affected by temperature, humidity, the conductivity of the soil, and the anode used, but the off-potential was little affected by these factors.

Keywords

Acknowledgement

본 연구는 산업통상자원부(MOTIE)와 한국에너지기술평가원(KETEP)의 지원을 받아 수행한 연구 과제입니다(No. 20217910100010).

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