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무도장 내후성 강교량의 Box Girder 내부볼트 연결부에 대한 외부전원식 전기방식효과에 관한 연구
박용걸(Park Yong-Gul),김헌태(Kim Hun-Tae),백찬호(Baek Chan Ho),최정열(Choi Jung Youl) 한국철도학회 2004 한국철도학회 학술발표대회논문집 Vol.- No.-
This paper considers corrosion problems in the bolt connection of weathering steel box girder bridge using the external electric type corrosion resistance method which resisted to local corrosion in coated steel surface with contacted air. The weathering steel was created a rust itself in the passive state, but a coated box girder type was easily dew form could be made galvanic cell that accelerated corrosion, so that it was ruled by protection coat with some paint. Therefore, it needed that can be applied the external electric type corrosion resistance method in coated surface. As a result of the test of polarization amount had measured that the weathering steel was higher currents than the general steel by about 5~10%. Therefore, an external electric type corrosion resistance method can be used to protect local corrosion in the coated bolt connection of weathering steel box girders effectively.