Influence of pre-existing oxides layer and interface condition with carbonated concrete on active reinforcing steel corrosion - INSA Toulouse - Institut National des Sciences Appliquées de Toulouse Access content directly
Journal Articles Materials and Corrosion / Werkstoffe und Korrosion Year : 2015

Influence of pre-existing oxides layer and interface condition with carbonated concrete on active reinforcing steel corrosion

Abstract

This work focuses on carbonation-induced corrosion in concrete. This paper presents specific experiments which were developed in order to assess the influence of both pre-existing oxides layer at the surface of the steel bars and steel-concrete interface condition on active corrosion. Two types of active corrosion are studied: Microcell corrosion and galvanic corrosion. Results show that pre-existing oxide layer contributes to reduce both galvanic and microcell corrosion. Steel-concrete interface defect leads to a strong increase in galvanic corrosion but does not affect significantly microcell corrosion in carbonated concrete. The quantity of pre-existing oxides is highly scattered and these scatters can be superior to the mass of new oxides formed during relatively short-term corrosion tests in natural condition which makes mass loss analysis very difficult.

Dates and versions

hal-01849769 , version 1 (26-07-2018)

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Arnaud Castel, Abdelkader Nasser. Influence of pre-existing oxides layer and interface condition with carbonated concrete on active reinforcing steel corrosion. Materials and Corrosion / Werkstoffe und Korrosion, 2015, 66 (3), pp.206--214. ⟨10.1002/maco.201307195⟩. ⟨hal-01849769⟩
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