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3D finite element analysis of reinforced concrete structures exposed to chloride induced corrosion (CROSBI ID 576330)

Prilog sa skupa u zborniku | izvorni znanstveni rad | međunarodna recenzija

Ožbolt, Joško ; Balabanić, Gojko ; Kušter, Marija 3D finite element analysis of reinforced concrete structures exposed to chloride induced corrosion // EUROCORR 2011 - Developing Solutions for the Global Challenge / Dachema ; Svarea KIMAB (ur.). Stockholm: Dachema ; Svarea KIMAB, 2011. str. 192-1-192-10

Podaci o odgovornosti

Ožbolt, Joško ; Balabanić, Gojko ; Kušter, Marija

engleski

3D finite element analysis of reinforced concrete structures exposed to chloride induced corrosion

Coupled 3D chemo-hygro-thermo mechanical model for transient analysis of corro-sion processes before and after depassivation of steel reinforcement in concrete is presented in this paper. To estimate reduction of the reinforcement cross-section and to predict the volume increase of the corrosion product it is necessary to calculate the corrosion rate. Therefore, the following physical, electrochemical and mechanical processes have been modeled: (i) transport of capillary water, heat, oxygen and chloride through the concrete cover ; (ii) immobilization of chloride in the concrete ; (iii) cathodic and anodic polarization ; (iv) transport of OH- ions through electrolyte in concrete pores ; and (v) distribution of electrical potential and current density (corrosion rate). The application of the model is illustrated on numerical examples in which the transient 3D finite element analysis of RC specimens is carried out. The numerical results are in good agreement with the available experimental observations and with the results known from the literature, what leads to the conclusion that the model is able to realistically predict corrosion of reinforcement.

Transport processes; Current Density; Electrical Potential; Damages; Depassivation; Microplane Model; Finite Elements

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Podaci o prilogu

192-1-192-10.

2011.

objavljeno

Podaci o matičnoj publikaciji

EUROCORR 2011 - Developing Solutions for the Global Challenge

Dachema ; Svarea KIMAB

Stockholm: Dachema ; Svarea KIMAB

Podaci o skupu

The European Corrosion Congress - EUROCORR 2011

predavanje

04.09.2011-08.09.2011

Stockholm, Švedska

Povezanost rada

Građevinarstvo, Temeljne tehničke znanosti