Title: Design of shear strengths of corroded reinforced concrete beams

Authors: Yu-Xi Zhao, Ju Chen, Wei-Liang Jin

Addresses: Department of Civil Engineering, Zhejiang University, Hangzhou 310027, P.R. China. ' Department of Civil Engineering, Zhejiang University, Hangzhou 310027, P.R. China. ' Department of Civil Engineering, Zhejiang University, Hangzhou 310027, P.R. China

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.

Keywords: corrosion; design; reinforced concrete beams; shear strength; corroded stirrups; concrete structures.

DOI: 10.1504/IJMIC.2009.027074

International Journal of Modelling, Identification and Control, 2009 Vol.7 No.2, pp.190 - 198

Published online: 14 Jul 2009 *

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