Influence of impressed current on the initiation of damage in reinforced mortar due to corrosion of embedded steel

Caré, Sabine; Raharinaivo, A

doi:10.1016/j.cemconres.2007.08.022

Cited by 115 publications

(48 citation statements)

References 25 publications

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“…This low current efficiency suggests that oxidation of steel is not the main anodic process involved in the present corrosion test. Several researchers (Caré and Raharinaivo 2007;Nossoni and Harichandran 2012;Duffó et al 2015) have also observed low efficiencies in the corrosion tests with low contents of chloride in the concrete, as is the case of the present work. Nossoni and Harichandran (2012) postulated that for low chloride contents there are competitive reactions in the anode.…”

Section: Corrosion Degreesupporting

confidence: 48%

Modeling of Corrosion-Induced Damage in Reinforced Concrete Considering Electro-Mechanical Coupling

Qiao

Nakamura

Yamamoto

et al. 2016

ACT

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This paper presents an electro-mechanical model for evaluating the corrosion-induced damage in reinforced concrete under accelerated conditions. The model consists of structural analysis of concrete and the rebar using the Rigid Body Spring Method and corrosion current analysis with the truss networks model. The electric corrosion process is coupled with concrete cracking conditions by relating current efficiency to local crack width; the predicted radius losses of rebars are used to evaluate concrete crack propagation and residual tensile performance of corroded rebars. The model is validated with the results of accelerated corrosion tests using impressed current and a sodium chloride pond on the concrete cover. Good agreement with the test data is obtained with the proposed model, in terms of corrosion degree and profile, concrete crack pattern, and tensile behavior of corroded rebars. The model offers a corroborative tool with the accelerated corrosion technique to study the mechanical behavior of corroded concrete structures.

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Section: Corrosion Degreesupporting

confidence: 48%

Modeling of Corrosion-Induced Damage in Reinforced Concrete Considering Electro-Mechanical Coupling

Qiao

Nakamura

Yamamoto

et al. 2016

ACT

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“…However, this current density falls within the range 100-500 |j.A/cm 2 for which Faraday's law for steel dissolution has been shown to hold for chlorinated concrete [4,5]. The composition factor, which may affect the evolution of cracking with time, is not essential in the present study since the tests are only intended to assess the ability of the numerical model to capture the crack pattern.…”

Section: Accelerated Corrosion Tests Set-upmentioning

confidence: 99%

“…Accelerated corrosion tests were carried out by the commonly used impressed current technique [1,4,5]. After corrosion, the prisms were cut into slices to study the cracking along the bar and the slices were impregnated under vacuum with resin containing fluorescein to improve the detection of cracks in the slices under UV light.…”

Section: Introductionmentioning

confidence: 99%

An experimental and numerical study of the pattern of cracking of concrete due to steel reinforcement corrosion

Sanz

Planãs

Sancho

2013

Engineering Fracture Mechanics

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“…The accelerated process appears to overestimate the actual damage when a weak electrolyte was used as a medium of accelerated corrosion. Discrepancy in terms of diameter loss was also reported in a separate study [14].…”

Section: Corrosion Damagementioning

confidence: 83%

Corrosion Damage Measurement on Reinforced Concrete by Impressed Voltage Technique and Gravimetric Method

Benito¹

2017

GEOMATE

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This study investigated the effect of sea water on the corrosion behavior of reinforcing steel in concrete. A 3% sodium chloride solution was used to simulate sea water. The solution was used as mixing water as well as immersion media. Combinations of mixing and immersion media considered in this study were normal-normal water (NN), normal-sea water (NS), seawater-normal water (SN), and seawater-seawater (SS). Corrosion measurement used were Impressed Voltage Test (IVT) and gravimetric method. Results showed that corrosion current curves, gravimetric mass loss, the average and maximum current passed are severe in SS but negligible in NN. The difference between NS and SN, however, is not well defined but was shown to differ in terms of corrosion current behavior before and after cracking. Incorporating chloride in the mix, regardless of its environment, was found to cause rapid crack development in concrete. Statistical analysis suggested that the presence of chloride had no influence on the outcome of percent mass loss with respect to the control sample except in SS combination.

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Influence of impressed current on the initiation of damage in reinforced mortar due to corrosion of embedded steel

Cited by 115 publications

References 25 publications

Modeling of Corrosion-Induced Damage in Reinforced Concrete Considering Electro-Mechanical Coupling

Modeling of Corrosion-Induced Damage in Reinforced Concrete Considering Electro-Mechanical Coupling

An experimental and numerical study of the pattern of cracking of concrete due to steel reinforcement corrosion

Corrosion Damage Measurement on Reinforced Concrete by Impressed Voltage Technique and Gravimetric Method

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