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《Journal of Hydroelectric Engineering》 2007-06
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Study on flexural experiment of reinforced concrete beams under simultaneous service loading and corrosion

HE Shiqin~1,WANG Haichao~2,GONG Jinxin~2(1.State Key Laboratory of Hydroscience and Hydropower Engineering,Tsinghua University,Beijing 100084;2.College of Civil and Hydraulic Engineering,Dalian University of Technology,Dalian,Liaoning 116023)  
The effects of different loading on the corrosion of reinforcing steel,the deflection and remaining loading capacity of the reinforced concrete beams are studied.The beam specimens are subjected to bending at various loading levels or sustained loading or previous loading while the steel bar is of corrosion and other beam is with sustained loading or without loading or without corrosion of steel bars.The application of an external current and the NaCl solution spraying is used to accelerate the corrosion of the steel bars.The remaining flexural loading capacity of the beams is tested at the end of the experiment.The results show that the loading has a visible effect on corrosion.The corrosion of reinforcing steel bars is accelerated and un-uniform under simultaneous loading. The time-dependent deflection of the beams increases and the residual flexural load-bearing capacity decreases.
【Fund】: 国家自然科学基金(50078009);; 辽宁省科学技术基金(001077)
【CateGory Index】: TU375.1
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