Effect of longitudinal rebar corrosion on the compressive strength reduction of concrete in reinforced concrete structure

Shayanfar, Mohsen Ali; Barkhordari, Mohammad Ali; Ghanooni-Bagha, Mohammad

doi:10.1177/1369433216630367

Cited by 33 publications

(16 citation statements)

References 36 publications

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“…Because of increasing in formed productions in corrosion reaction (iron oxide), radial compressive force has been created all over bar areas and causes tension stresses in concrete around bar. In low and medium corrosions, crack and delaminating is occurred that for modeling this phenomenon, Shayanfar et al [38] are presented equation 4:…”

Section: -4 Concrete Strength Reduction Effected By Corrosion Crackmentioning

confidence: 99%

Simulation The Force- Displacement Behavior of Reinforced Concrete Beams Under Different Degrees and Locations of Corrosion

et al. 2021

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Regarding the failures due to corrosion, concern about corrosion damage has been intensified and some tests have been carried out in order to study the effect of corrosion on capability of bending and shear capacity of reinforced concrete beams. For as much as these studies is experimental commonly and using from its results subject to spend time and financial costs, this study is set to analyze behavior of corrosion found reinforced beams, using ABAQUS computer software. For this purpose, the sound reinforced concrete beams is modeled, first and simulating accuracy is confirmed by existing experiment results. Then corrosion found beams with different degrees are modeled by ABAQUS software and their results were compared with experimental results and finally, P-∆ charts are produced and provided for software models. In the way of simulations, effects of corrosion site, amount and intensity of corrosion, concrete compressive strength and bar yielding stress on behavior of reinforced concrete beams under corrosion is examined. In this investigation, the effect of different locations and different corrosion degrees is considered regarding changes which take place in cross section of steel, mechanical characteristics concrete and steel and integrity between steel and concrete.

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Section: -4 Concrete Strength Reduction Effected By Corrosion Crackmentioning

confidence: 99%

Simulation The Force- Displacement Behavior of Reinforced Concrete Beams Under Different Degrees and Locations of Corrosion

et al. 2021

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“…It should be noted that this process, in a uniform type of corrosion, is more likely than corrosion of a pitting type. For modeling this process and its effect on the compressive strength of concrete, equation have been used by Shayanfar and Ghanoonibagha model [10,19].…”

Section: Reduced Compressive Strength Of Concretementioning

confidence: 99%

Time-dependent Seismic Performance Assessment of Corroded Reinforced Concrete Frames

Ghanooni-Bagha

Zarei

Savoj

et al. 2019

Period. Polytech. Civil Eng.

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In this study, effects of reinforcement corrosion such as reinforcement cross section reduction, steel yield strength and concrete compressive strength reduction on RC member capacity decrease are studied. Next, a two-dimensional reinforced concrete moment resistant frame is modeled to evaluate the effects of moderate and severe intensity corrosion on moment-curvature behavior of elements and structure seismic response under nonlinear analysis. Structure capacity curves in push-over analysis and failure curves resulted from IDA for both the structure without and with corrosion are obtained and the effects of reinforcement’s corrosion on the reinforced concrete frame seismic performance are determined through comparing the results. The results revealed that in terms of amount, place and type of corrosion in the reinforced concrete frame, value of the reduction resisting moment of elements is different. Furthermore, the outcomes of nonlinear analyses showed that the capacity of structure is reduced and its seismic performance level is changed as a result of corrosion.

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“…The ratio of the ultimate bond strength (T c max) to developed bond strength (T c ) can be obtained for each corrosion degree based on the above assumptions and using Figure 3 [19]. In this study, the bond behavior is idealized as plotted in Figure 4.…”

Section: Modelling Assumptions and Limitationsmentioning

confidence: 99%

Simulation of the Behavior of Corrosion Damaged Reinforced Concrete Beams with/without CFRP Retrofit

et al. 2018

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Harsh environmental conditions along with aggressive chemical agents are known as one of the main reasons behind damages observed in reinforced concrete members. Corrosion of reinforcement worldwide is one of the leading causes of damages occurred in reinforced concrete over the lifespan. There are many critical energy and transportation infrastructures located on coastal regions exposed to high humidity and chloride content where they are highly prone to reinforcement corrosion. This calls for retrofit methods, which safeguard not only the strength but also the durability of corrosion deteriorated reinforced concrete structures. Carbon fiber polymers considering their mechanical and chemical properties are recognized as one of the main retrofit techniques. In this study, the influence of different levels of corrosion on the structural behavior of reinforced concrete beams is studied. ABAQUS software package is employed to simulate the nonlinear behavior of reinforced concrete beams with tensile reinforcements and stir-ups corrosion degrees of 20% and 40%. The structural behavior of original damaged specimen as well as the same specimen strengthen with carbon fiber reinforced polymer (CFRP) is studied. The purpose of the retrofit is compensate for the loss of shear and flexural capacity of the member due to corrosion. Different variants for the arrangement of CFRP strips are studied and compared. The result of the current research further uncaps the efficiency of fiber polymers to secure strength and durability of corrosion damaged reinforced concrete members.

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Effect of longitudinal rebar corrosion on the compressive strength reduction of concrete in reinforced concrete structure

Cited by 33 publications

References 36 publications

Simulation The Force- Displacement Behavior of Reinforced Concrete Beams Under Different Degrees and Locations of Corrosion

Simulation The Force- Displacement Behavior of Reinforced Concrete Beams Under Different Degrees and Locations of Corrosion

Time-dependent Seismic Performance Assessment of Corroded Reinforced Concrete Frames

Simulation of the Behavior of Corrosion Damaged Reinforced Concrete Beams with/without CFRP Retrofit

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