Design of shear strengths of corroded reinforced concrete beams Online publication date: Tue, 14-Jul-2009
by Yu-Xi Zhao, Ju Chen, Wei-Liang Jin
International Journal of Modelling, Identification and Control (IJMIC), Vol. 7, No. 2, 2009
Abstract: This paper focused on the design of shear strength of corroded reinforced concrete beams. Firstly, the behaviour and shear strength of corroded reinforced concrete beams obtained from recent experimental investigations are reviewed and summarised. Secondly, the shear strengths of corroded reinforced concrete beams are compared with those predictions obtained by other researchers. The effects of corroded stirrups on the shear resistance of reinforced concrete beams are also analysed. Generally, it is shown that the shear strength of beams increases at the early stages of stirrups corrosion. The loss in shear strength commences when the corrosion of the stirrups approximately exceeds a 10% threshold level. Finally, an empirical equation is proposed to predict the shear strength of reinforced concrete beams with corroded stirrups. This proposed equation is in agreement with the experimental data and enables designers to take into account the effects of corroded stirrups.
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