Experimental Study on Modes of Concrete Cracking and Threshold Amounts of Corrosion for Crack Onset

Nakagawa, Hiroyuki; Tanaka, Tomohiro; Yokota, Masaru; Matsushima, Manabu

doi:10.2208/jsceje.64.110

Cited by 4 publications

(2 citation statements)

References 7 publications

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“…It is clear from both theory and previous experiments (Nakagawa et al, 2008) that the macro-cell corrosion current density depends on the ratio of cathodal area to anodal area (see Fig. 10).…”

Section: Modelling Of Steel Materials In Rc Membersupporting

confidence: 60%

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Establishment of Coupled Analysis of Interaction between Structural Deterioration and Reinforcement Corrosion by Salt Damage

Suzuki

Fukuura²,

Takeda

et al. 2016

ACT

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This study develops an analysis method for estimating the process of corrosion in concrete, including initial corrosion and the onset of corrosion-induced cracking. The method is suitable for application in rationalizing the verification of the durability of salt-damaged RC structures. Corrosion deterioration is computed by coupling the analysis of structure with the analysis of reinforcement corrosion. A method of calculating macro-cell corrosion in consideration of macro-cell corrosion current density is also proposed, focusing on cathodic elements of a reinforcing bar. The proposed analytical method is validated against dry-wet cyclic tests with salt solution to simulate macro-cell corrosion. We verify the accuracy of the method by confirming the non-uniformity of the concrete before cracking and, by coupling the analysis with structural analysis, investigating how the expansion ratio of corrosion products and diffusion coefficient of chloride ions affect the onset of corrosion, the time of initial corrosion cracking, the chloride ion density and the corrosion amount. This paper is based on an original paper (Suzuki et al. 2014) written in Japanese.

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Section: Modelling Of Steel Materials In Rc Membersupporting

confidence: 60%

“…Generally, corrosion has been promoted in these experiments by electrolytic (Suzuki et al 2009;Morikawa et al 1987;Tamori et al 1988) and cyclic drying-wetting methods Nakagawa et al 2008). With the former, corrosion cracking is judged from the value of strain at the concrete surface.…”

Section: Verification Of Limit Corrosion Quantity At Corrosion Crack mentioning

confidence: 99%

Establishment of Coupled Analysis of Interaction between Structural Deterioration and Reinforcement Corrosion by Salt Damage

Suzuki

Fukuura²,

Takeda

et al. 2016

ACT

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Time-dependent reliability analysis of existing RC structures in a marine environment using hazard associated with airborne chlorides

Akiyama

Frangopol

Yoshida

2010

Engineering Structures

127

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Effect of uncertainties in cable corrosion and material strength on seismic fragility of long-span cable-stayed bridges in marine environments

Lu,

2024

Structures

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Experimental Study on Modes of Concrete Cracking and Threshold Amounts of Corrosion for Crack Onset

Cited by 4 publications

References 7 publications

Establishment of Coupled Analysis of Interaction between Structural Deterioration and Reinforcement Corrosion by Salt Damage

Establishment of Coupled Analysis of Interaction between Structural Deterioration and Reinforcement Corrosion by Salt Damage

Time-dependent reliability analysis of existing RC structures in a marine environment using hazard associated with airborne chlorides

Effect of uncertainties in cable corrosion and material strength on seismic fragility of long-span cable-stayed bridges in marine environments

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