Experimental and numerical investigation of the cyclic response of stainless steel reinforced concrete columns

Corrosion of carbon steel reinforcement is the major cause of premature deterioration of reinforced concrete infrastructures. There is increasing interest in the use of maintenance-free materials such as stainless steel reinforcement in concrete, with inherent durability and resistance to various forms of corrosion and favourable mechanical properties, in particular high ductility and substantial strain hardening. This paper presents the results of the first large-scale testing programme on reinforced concrete columns with duplex EN 1.4462 stainless steel rebars. Three cantilever column specimens were tested, two with EN 1.4462 stainless steel reinforcing bars, subjected to constant compressive axial load plus (i) monotonic loading and (ii) lateral cyclic loading, and one B500 carbon steel reinforced control specimen. In addition, conventional pull-out tests and tensile tests were conducted for a comparative assessment of the bond-slip behaviour and mechanical properties of the reinforcing bars. Numerical modelling simulations were carried out with the open-source finite element analysis platform OpenSees to predict the nonlinear response of stainless steel reinforced concrete columns and the results were compared with the measured experimental performance data. The force-displacement global responses and the dissipated energy evolutions of the tested columns from the experimental and numerical models are presented and compared.
Keywords: Concrete structures durability, Stainless steel reinforcing bars, Columns, Experimental tests, OpenSees numerical modelling.

Columns, Concrete structures durability, Experimental tests, OpenSees numerical modelling, Stainless steel reinforcing bars

10.1016/j.engstruct.2021.113607

0141-0296

Melo, J.

fa3e401e-56f8-4e9e-b595-dd05d0258c73

Afshan, Sheida

68dcdcac-c2aa-4c09-951c-da4992e72086

Rosetto, Tiziana

b5b0562a-5597-4bd2-91b3-34867c2e4956

Varum, Humberto

dd07225a-3939-42cd-9f9d-1545a882eb54

Arede, A

00775b68-33e8-4f0a-a345-cbe72a45e15b

24 November 2021

Melo, J.

fa3e401e-56f8-4e9e-b595-dd05d0258c73

Afshan, Sheida

68dcdcac-c2aa-4c09-951c-da4992e72086

Rosetto, Tiziana

b5b0562a-5597-4bd2-91b3-34867c2e4956

Varum, Humberto

dd07225a-3939-42cd-9f9d-1545a882eb54

Arede, A

00775b68-33e8-4f0a-a345-cbe72a45e15b

Melo, J., Afshan, Sheida, Rosetto, Tiziana, Varum, Humberto and Arede, A (2021) Experimental and numerical investigation of the cyclic response of stainless steel reinforced concrete columns. Engineering Structures, 252, [113607]. (doi:10.1016/j.engstruct.2021.113607).

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Accepted/In Press date: 14 November 2021

e-pub ahead of print date: 24 November 2021

Published date: 24 November 2021

Additional Information: Funding Information: This paper reports research partially developed under financial support provided by ?FCT - Funda??o para a Ci?ncia e Tecnologia?, Portugal, co-funded by the European Social Fund, namely through the post-doc fellowship of the first author, with reference SFRH/BPD/115352/2016 and by Base Funding - UIDB/04708/2020 and Programmatic Funding - UIDP/04708/2020 of the CONSTRUCT - Instituto de I&D em Estruturas e Constru??es - funded by national funds through the FCT/MCTES (PIDDAC). The stainless steel rebar specimens used in the experimental programme were provided by ACERINOX, which is gratefully acknowledged. Funding Information: This paper reports research partially developed under financial support provided by “FCT - Fundação para a Ciência e Tecnologia”, Portugal , co-funded by the European Social Fund , namely through the post-doc fellowship of the first author, with reference SFRH/BPD/115352/2016 and by Base Funding - UIDB/04708/2020 and Programmatic Funding - UIDP/04708/2020 of the CONSTRUCT - Instituto de I&D em Estruturas e Construções - funded by national funds through the FCT/MCTES (PIDDAC). The stainless steel rebar specimens used in the experimental programme were provided by ACERINOX, which is gratefully acknowledged. Publisher Copyright: © 2021 Elsevier Ltd Copyright: Copyright 2021 Elsevier B.V., All rights reserved.

Keywords: Columns, Concrete structures durability, Experimental tests, OpenSees numerical modelling, Stainless steel reinforcing bars