Abstract
The impact of stirrup corrosion on the constraint of corroded reinforced concrete(CRC) column is an pressing problem that needs to be solved. In this paper, 12 corroded CRC short-columns and 3 uncorroded CRC short-columns with dimension of 150mm×150mm×450mm have been prepared for the axial compression experiment. Through the experiment, the total cross-section stress-strain curves of the short-columns were measured under different degrees of stirrups corrosion, and the effects of corrosion rate of stirrups on the shape of the total cross-section stress-strain curves, bearing capacity, deformation and the mechanical parameters of confined concrete have been investigated. According to the results, the corrosion of stirrups has reduced their section, changed the material quality and damaged the concrete cover, which reduces the constraint to the core concrete; the shape changes of stress-strain curve illustrate that the destructive form of short-columns developed form ductility damage to brittle failure gradually.
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