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Crump, D.
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article
Testing and numerical modelling of circular stainless steel reinforced concrete columns
Abstract
Chloride-induced corrosion of carbon steel reinforcing bars is considered the primary cause of deterioration of reinforced concrete (RC) structures. Stainless steel rebars have gained increasing attention in recent years as a promising alternative to the traditional carbon steel rebars to overcome the problem of chloride-induced reinforcement corrosion in RC structures. This paper presents the results of a new experimental testing program on two circular RC columns, subjected to lateral cyclic loading, reinforced with two different stainless steel reinforcing bar grades: austenitic EN 1.4301 and duplex EN 1.4362. A third RC column reinforced with carbon steel reinforcing bar was tested as a control specimen. The resultant force-displacement relationships, damage, energy dissipation, secant stiffness, and moment-curvature relationships from digital image correlation (DIC) are presented and discussed. Finally, an advanced OpenSees finite element model, validated against the conducted tests, for simulating the cyclic response of RC columns is presented.