Shear behaviour of RC beams with corrosion damaged partial length |
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Authors: | Xiao-Hui Wang Bing Li Xiang-Hua Gao Xi-La Liu |
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Affiliation: | (1) Department of Civil Engineering, Shanghai Jiaotong University, Shanghai, 200240, China |
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Abstract: | Experimental study on shear behaviour of reinforced concrete (RC) beams with corrosion damaged partial length in one shear
span is presented. In order to discover how mechanical behaviour and load capacity of the RC beam were influenced by the corrosion
damaged partial length, 14 RC beams including two noncorroded RC beams, four RC beams with partially unbonded length and eight
RC beams with partially corroded length were designed. The different shear span-to-effective depth ratios, the different designed
partial lengths located in one shear span and the different corrosion levels within the designed partial lengths were the
main considered parameters. Test results are presented in detail. Due to the different bond conditions as well as different
damage status in the longitudinal bars and the contacted stirrups, the structural performance, ductility, load capacity of
the test specimens with partially unbonded and corroded length are quite different. Due to the severe pitting corrosion of
the longitudinal bars and rupture of the contacted stirrups within partial length of one shear span, reduced load capacity,
stiffness and ductility are shown in beam with higher corrosion level within longer partial length. |
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