Investigation and Evaluation for Rebar Corrosion & Chloride of Freeway Concrete Bridges in Seoul Metropolitan Area

서울시내 고가차도의 염화물량 및 철근의 부식상태 조사 및 평가

A series of in-situ inspection and measurements have been conducted to estimate rebar corrosion incidence of freeway concrete bridges in Seoul metropolitan area. The results of this study have been analysed to identify the extent of chloride concentration and incidence of steel corrosion in various ages and in the different members of the structures. About 34% of the freeway structures had a value lower than - 350mV(vs CSE), so it could conclude that the excessive chloride concentration was a major cause of rebar corrosion.