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Title |
Evaluation of Relative Corrosion Rate depending on Local Location and Installation of Structural Member in Steel Water Gate
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Authors |
하민균(Min-Gyun Ha) ; 정영수(Young Soo Jeong) ; 박승훈(Seung hun Park) ; 안진희(Jin-Hee Ahn) |
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DOI |
https://doi.org/10.11112/jksmi.2019.23.7.16 |
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Keywords |
강재 수문; 가로보; 대기노출실험; 평균부식두께; 갈바닉 부식전류량; 부식손상량 Steel water gate; Cross beam; Atmospheric exposure test; Mean corrosion depth; Galvanic corrosion current; Corrosion damage |
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Abstract |
The corrosion amounts of steel structures can be different from depending on the type of installation and height. Thus, their corrosion maintenance should be considered depending on installation conditions of local structural members. In this study, atmospheric exposure test was conducted to evaluate the corrosion amount and corrosion rate depending on the type of installation and height of a steel water gate using monitoring steel plates and corrosion environment measuring sensors. The mean corrosion depth was evaluated using weight loss method and the galvanic corrosion current was measured by corrosion environment measuring sensors. Local corrosion rate of local structural member in steel water gate was estimated using measured mean corrosion depths and galvanic corrosion currents. From this measurement results, corrosion damage in horizontal member of the cross beam was highly evaluated than those of other structural member as skin plate, etc. The relative difference in the corrosion rate of a local structural member could be highly affected by local corrosion environments of steel water gate members. Therefore, an appropriate maintenance method should be considered for local corrosion damages of local structural members determined by local corrosion environments of a steel water gate.
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