鋼・コンクリートハイブリッド構造の海洋環境下における劣化性状

抄録

Steel-concrete composite members are widely installed in structures because of their excellent mechanical characteristics. Under marine environments, however, corrosion of steel plates will occur and may result in initiating cracks in concrete. This paper presents the results of exposure tests under marine environments and their analyses to make clear the corrosion characteristics of the steel plates in composite structures. Corrosion of steel plates was a principal cause to deteriorate composite members and was affected by ambient conditions as splash or tidal zones. Furthermore, it was made clear that corrosion of steel plates occurred by the micro cell on the plate surface. On the basis of the test results, corrosion rates of steel plates are also investigated.