Structural Assessment of Corroded Reinforced Concrete Beams: Modeling Guidelines

Coronelli, Dario; Gambarova, Pietro G.

doi:10.1061/(asce)0733-9445(2004)130:8(1214)

Cited by 550 publications

(322 citation statements)

References 16 publications

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“…However, the degradation of the bond stress that is due to corrosion has been studied with less attention, and thus, the literature is insufficient to provide clear understanding of the bond characteristics in reinforced concrete members with respect to the distributed area of corrosion in the member and the level of corrosion in the rebar. Coronelli and Gambarova (2004) employed a bond deterioration index of concrete beam with corrosive conditions in numerical analysis based on non-linear finite element analysis, and the results indicate that bond deterioration significantly influences to determining the residual ductility of a structure. Azad et al (2007Azad et al ( , 2010) used a correction factor to calculate the residual flexural strength of concrete beams with corroded rebar.…”

Section: Introductionmentioning

confidence: 99%

Evaluation of Bond Properties of Reinforced Concrete with Corroded Reinforcement by Uniaxial Tension Testing

Kim

Choi

Sangchun

et al. 2016

Int J Concr Struct Mater

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The degradation of the load-bearing capacity of reinforced concrete beams due to corrosion has a profoundly negative impact on the structural safety and integrity of a structure. The literature is limited with regard to models of bond characteristics that relate to the reinforcement corrosion percentage. In this study, uniaxial tensile tests were conducted on specimens with irregular corrosion of their reinforced concrete. The development of cracks in the corroded area was found to be dependent on the level of corrosion, and transverse cracks developed due to tensile loading. Based on this crack development, the average stress versus deformation in the rebar and concrete could be determined experimentally and numerically. The results, determined via finite element analysis, were calibrated using the experimental results. In addition, bond elements for reinforced concrete with corrosion are proposed in this paper along with a relationship between the shear stiffness and corrosion level of rebar.

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Section: Introductionmentioning

confidence: 99%

Evaluation of Bond Properties of Reinforced Concrete with Corroded Reinforcement by Uniaxial Tension Testing

Kim

Choi

Sangchun

et al. 2016

Int J Concr Struct Mater

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“…To date, this process is still difficult to describe with a precise mechanical model. In this paper, the simplified formula recommended in [33,34] is used for calculation as follows:…”

Section: Advances In Civil Engineeringmentioning

confidence: 99%

Numerical Analysis of the Degradation Characteristics of Bearing Capacity of a Corroded Reinforced Concrete Beam

Zhao

et al. 2018

Advances in Civil Engineering

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e static load carrying capacity of a noncorroded reinforced concrete (RC) simply supported beam is numerically simulated by ABAQUS software, and the reliability of the finite element model is verified by comparing with the test results. Based on the above model, the macroscopic mechanical properties of the beam under different degrees of corrosion are calculated. In the calculation, the degradation of the bond-slip performance and mechanical properties of corroded rebars and the coupling effect on the bearing capacity and ductility degradation of the beams are considered. e results show that, under conditions of slight corrosion, the degradation of bond-slip performance between the rebar and concrete has no significant influence on the bearing capacity of the beam, while the degradation of the corroded rebar had a significant effect. Under moderate and severe corrosion conditions, the bearing capacity and ductility degradation caused by bond-slip are dominant in the mechanical property degradation of the beam. Overall, the macroscopic mechanical properties of the corroded beam are influenced by the coupling effect of bond-slip degradation and the mechanical property degradation of the rebar. With the increase in the corrosion rate, the bearing capacity and ductility of the beam are decreased, and its brittleness is increased.

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“…Recent studies on safety and structural reliability of corroding reinforced concrete beams, assume general (uniform) corrosion and generally, simplified assumptions are made for pitting corrosion which ignore the spatial variability associated with pitting along the reinforcing bar (Mori and Ellingwood 1993;Rodriguez et al 1997;Stewart and Rosowsky 1998;Mangat and Elgarf 1999;Vu and Stewart 2000;Torres-Acosta and Martinez-Madrid 2003;Coronelli and Gambarova 2004). Stewart (2004) proposes a stochastic model to take account of the spatial effect of pitting corrosion on structural reliability.…”

Section: Time-dependent Spatially Variable Resistancementioning

confidence: 99%

Spatial time-dependent reliability analysis of reinforced concrete slab bridges subject to realistic traffic loading

Hajializadeh

Stewart

Enright³

et al. 2015

Structure and Infrastructure Engineering

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Structural Assessment of Corroded Reinforced Concrete Beams: Modeling Guidelines

Cited by 550 publications

References 16 publications

Evaluation of Bond Properties of Reinforced Concrete with Corroded Reinforcement by Uniaxial Tension Testing

Evaluation of Bond Properties of Reinforced Concrete with Corroded Reinforcement by Uniaxial Tension Testing

Numerical Analysis of the Degradation Characteristics of Bearing Capacity of a Corroded Reinforced Concrete Beam

Spatial time-dependent reliability analysis of reinforced concrete slab bridges subject to realistic traffic loading

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