Experimental evaluation of the corrosion influence on the cyclic behaviour of RC columns

Meda, Alberto; Mostosi, Serena; Rinaldi, Zila; Riva, Paolo

doi:10.1016/j.engstruct.2014.06.043

Cited by 258 publications

(161 citation statements)

References 18 publications

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“…This is in good agreement with observed experimental results reported by other researchers (Meda et al, 2014;Ma et al, 2012). The computational platform developed in this paper is capable of predicting this failure mode.…”

Section: Discussionsupporting

confidence: 82%

“…These cracks were initially caused by the corrosion and opened up during the cyclic test. The corrosion level in this experiment was only moderate otherwise these cracks could be opened up more significantly as observed by other researchers (Meda et al 2014;Ma et al 2012). After the peak horizontal force a significant strength reduction and degradation was seen in the force-displacement response.…”

Section: Resultssupporting

confidence: 53%

“…Meda et al (2014) and Ma et al (2012) reported that the failure of corroded columns and beams under cyclic loading is mainly governed by fracture of bars in tension due to low-cycle fatigue and buckling of bars and crushing of confined concrete in compression.…”

Section: Modelling Bond-slip Behaviour Of Column-foundation Interfacementioning

confidence: 99%

See 2 more Smart Citations

Structural capacity assessment of corroded RC bridge piers

Kashani

Crewe

Alexander

2017

Proceedings of the Institution of Civil Engineers - Bridge Engi

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Section: Discussionsupporting

confidence: 82%

Section: Resultssupporting

confidence: 53%

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Structural capacity assessment of corroded RC bridge piers

Kashani

Crewe

Alexander

2017

Proceedings of the Institution of Civil Engineers - Bridge Engi

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“…This correction factor was then used for inducing corrosion in large‐scale columns. A similar previous study by Meda et al calibrated the accelerated corrosion regime for full‐scale columns specimens. This study initially took correction factor of 1.5 which was later modified to 1.3 for the given set of variables.…”

Section: Experimental Programmentioning

confidence: 64%

“…It should be noted that the direction of corrosion cracks primarily depends on the orientation of cage component being corroded. Some studies have examined the effects of corrosion of transverse reinforcement only, while some other studies have considered corrosion of longitudinal reinforcement . These previous studies, therefore, have reported the orientation of corrosion‐induced cracks either in a transverse direction parallel to transverse ties or in a longitudinal direction parallel to longitudinal main reinforcement.…”

Section: Resultsmentioning

confidence: 99%

Performance of aged reinforced concrete columns under simulated seismic loading

Rajput

Sharma

2019

Structural Concrete

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Experimental investigations were carried out to examine the seismic performance of corroded reinforced concrete (RC) columns with sparsely distributed ties (under‐confined columns). Four full‐scale specimens were cast, corroded, and tested in this study. One specimen followed current seismic guidelines and acted as control column, while other three columns with larger tie spacing represented precode era under‐confined columns. Two of the three under‐confined columns were corroded to 15 and 30% corrosion degrees using a precalibrated accelerated corrosion regime. The entire study was intended to quantify the effect of inadequate confinement and corrosion on seismic response of RC columns. The results showed that the sparsely distributed transverse reinforcement resulted in lowering lateral strength and deformability of RC Columns. When these under‐confined columns were deteriorated by corrosion, their structural performance was found to have degraded significantly. It was observed that the specimens with 15 and 30% corrosion had 23 and 37.1% lower lateral load capacity respectively with respect to their un‐corroded counterpart. Furthermore, the observed lower values of ductility factors and other essential performance indicators manifested the adverse effects of inadequate confining reinforcement and aging‐related corrosion.

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Influence of corrosion on failure modes and lifetime seismic vulnerability assessment of low‐ductility RC frames

Shekhar,

Freddi,

Ghosh

et al. 2023

Earthq Engng Struct Dyn

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Corrosion of reinforced concrete (RC) structures constitutes a critical form of environmental deterioration and may significantly increase the vulnerability of old non‐seismically designed buildings during earthquake events. This study proposes a probabilistic framework to evaluate the influence of corrosion deterioration on the lifetime seismic fragility of low‐ductility RC frame buildings. In contrast to limited past literature on this topic, the proposed framework offers novel contributions. This is one of the first study to consider potential alteration in failure modes of building components (from flexure to flexure‐shear) due to the time‐dependent aging process. Numerical models validated with past experimental test results are utilized to capture these failure modes, which are particularly relevant for low ductility RC frames designed prior to the introduction of modern seismic codes. Secondly, given the gamut of uncertainties associated with the corrosion process, this study develops condition‐dependent seismic fragility functions independent from an assumed exposure scenario, as often done in literature. These functions can be easily adopted by design engineers and stakeholders for prompt fragility assessment, and subsequent decision‐making without the need for computationally expensive finite element (FE) model runs. The proposed framework is demonstrated on a benchmark three‐story RC frame that considers time‐varying seismic demand models and damage state thresholds while accounting for the uncertain corrosion deterioration process and ground motion record‐to‐record variability.

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Experimental evaluation of the corrosion influence on the cyclic behaviour of RC columns

Cited by 258 publications

References 18 publications

Structural capacity assessment of corroded RC bridge piers

Structural capacity assessment of corroded RC bridge piers

Performance of aged reinforced concrete columns under simulated seismic loading

Influence of corrosion on failure modes and lifetime seismic vulnerability assessment of low‐ductility RC frames

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