It is a Known fact that the compressive strength and ductility of concrete can be considerably improved by lateral confinement. In this study, a ductility-type seismic retrofitting technique of RC columns by utilizing high-strength steel bars (PC bars) prestressing was applied, which
is arranged on the four faces of the RC bars as well as passive confinement and transverse reinforcement can be expected.Recent axial compression tests showed that the active and passive confinement using PC bar prestressing can considerably improve the stress-strain characteristics of confined
concrete. In this paper, the shear resistance mechanism and shear strength of RC columns retrofitted using PC bar Prestressing can considerably improve the stress-strain characteristics of confined concrete. In this paper, the shear resistance mechanism and shear strength of RC columns retrofitted
using PC bar prestressing was experimentally investigated under constant axial force and cyclic lateral forces.
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Document Type: Research Article
Publication date: 06 May 2013
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