Title: Effect of Specimen Length and Non-Bond Region on Bond Behavior of Reinforcing Bars in Concrete

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Publication: CIA

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Date: 2/28/2011

Abstract:
This paper describes the effects of specimen size and non-bond region at the ends of specimens on the bond behaviour of reinforcing bar in concrete through axial tension test and eccentric axial tension test. The influences of the assumptions of the steel strain distribution from the axial tension test on the bond stress-slip relationship are also considered. As a result, it was found that the strain of reinforcing bars tends to decrease when there are non-bond regions compared with cases without such parts. It was also found that the bond stress- slip relationship is greatly affected by the assumptions of the steel strain distribution, and it can be arbitrarily indicated when the specimen length is 300mm.