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Title: Effect of crack openings on carbonation-induced corrosion

Abstract

Reinforced concrete is widely used in the construction of buildings, historical monuments, infrastructures and nuclear power plants. For a variety of reasons, many concrete structures are subject to unavoidable cracks that accelerate the diffusion of atmospheric carbon dioxide to the steel/concrete interface. Carbonation at the interface induces steel corrosion that could cause the development of new cracks in the structure, a determining factor for its durability. The aim of this article is to study the effect of existing cracks on the development of carbonation-induced corrosion. The results indicate that, after the initiation phase, the corrosion kinetics decreases with time and the free corrosion potential increases independently of the crack opening. In addition, the corroded zone matches the carbonated one. The interpretation of these results allows the authors to conclude that, during the corrosion process, corrosion products seal the crack and act as a barrier to oxygen and water diffusion. Consequently, the influence of crack opening on corrosion development is masked and the corrosion development is limited.

Authors:
 [1];  [2];  [1];  [1];  [3];  [4]
  1. Den-Service d'Etude du Comportement des Radionucléides (SECR), CEA, Université Paris-Saclay, F-91191, Gif-sur-Yvette (France)
  2. (France)
  3. EDF, R&D, MMC, F-77818 Moret-sur-Loing Cedex (France)
  4. LMDC, Université de Toulouse, INSA, UPS, Toulouse (France)
Publication Date:
OSTI Identifier:
22697111
Resource Type:
Journal Article
Resource Relation:
Journal Name: Cement and Concrete Research; Journal Volume: 95; Other Information: Copyright (c) 2017 Elsevier Science B.V., Amsterdam, The Netherlands, All rights reserved.; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; CARBON DIOXIDE; CARBON STEELS; CARBONATES; CORROSION; CORROSION PRODUCTS; CRACKS; DIFFUSION BARRIERS; HARDNESS; NUCLEAR POWER PLANTS; OPENINGS; REINFORCED CONCRETE; WATER

Citation Formats

Ghantous, Rita Maria, E-mail: rita-maria.ghantous@yncrea.fr, LMDC, Université de Toulouse, INSA, UPS, Toulouse, Poyet, Stéphane, L'Hostis, Valérie, Tran, Nhu-Cuong, and François, Raoul. Effect of crack openings on carbonation-induced corrosion. United States: N. p., 2017. Web. doi:10.1016/J.CEMCONRES.2017.02.014.
Ghantous, Rita Maria, E-mail: rita-maria.ghantous@yncrea.fr, LMDC, Université de Toulouse, INSA, UPS, Toulouse, Poyet, Stéphane, L'Hostis, Valérie, Tran, Nhu-Cuong, & François, Raoul. Effect of crack openings on carbonation-induced corrosion. United States. doi:10.1016/J.CEMCONRES.2017.02.014.
Ghantous, Rita Maria, E-mail: rita-maria.ghantous@yncrea.fr, LMDC, Université de Toulouse, INSA, UPS, Toulouse, Poyet, Stéphane, L'Hostis, Valérie, Tran, Nhu-Cuong, and François, Raoul. Mon . "Effect of crack openings on carbonation-induced corrosion". United States. doi:10.1016/J.CEMCONRES.2017.02.014.
@article{osti_22697111,
title = {Effect of crack openings on carbonation-induced corrosion},
author = {Ghantous, Rita Maria, E-mail: rita-maria.ghantous@yncrea.fr and LMDC, Université de Toulouse, INSA, UPS, Toulouse and Poyet, Stéphane and L'Hostis, Valérie and Tran, Nhu-Cuong and François, Raoul},
abstractNote = {Reinforced concrete is widely used in the construction of buildings, historical monuments, infrastructures and nuclear power plants. For a variety of reasons, many concrete structures are subject to unavoidable cracks that accelerate the diffusion of atmospheric carbon dioxide to the steel/concrete interface. Carbonation at the interface induces steel corrosion that could cause the development of new cracks in the structure, a determining factor for its durability. The aim of this article is to study the effect of existing cracks on the development of carbonation-induced corrosion. The results indicate that, after the initiation phase, the corrosion kinetics decreases with time and the free corrosion potential increases independently of the crack opening. In addition, the corroded zone matches the carbonated one. The interpretation of these results allows the authors to conclude that, during the corrosion process, corrosion products seal the crack and act as a barrier to oxygen and water diffusion. Consequently, the influence of crack opening on corrosion development is masked and the corrosion development is limited.},
doi = {10.1016/J.CEMCONRES.2017.02.014},
journal = {Cement and Concrete Research},
number = ,
volume = 95,
place = {United States},
year = {Mon May 15 00:00:00 EDT 2017},
month = {Mon May 15 00:00:00 EDT 2017}
}