Effect of crack openings on carbonation-induced corrosion
| Autor: | Nhu Cuong Tran, Rita Maria Ghantous, Valérie L’Hostis, Raoul François, Stéphane Poyet |
|---|---|
| Přispěvatelé: | Laboratoire Matériaux et Durabilité des constructions (LMDC), Institut National des Sciences Appliquées - Toulouse (INSA Toulouse), Institut National des Sciences Appliquées (INSA)-Institut National des Sciences Appliquées (INSA)-Université Toulouse III - Paul Sabatier (UT3), Université Fédérale Toulouse Midi-Pyrénées-Université Fédérale Toulouse Midi-Pyrénées, Institut National des Sciences Appliquées (INSA)-Université de Toulouse (UT)-Institut National des Sciences Appliquées (INSA)-Université de Toulouse (UT)-Université Toulouse III - Paul Sabatier (UT3), Université de Toulouse (UT) |
| Jazyk: | angličtina |
| Rok vydání: | 2017 |
| Předmět: |
Materials science
Carbonation Metallurgy 0211 other engineering and technologies 02 engineering and technology Building and Construction 021001 nanoscience & nanotechnology Reinforced concrete Seal (mechanical) Durability Corrosion Cracking [SPI]Engineering Sciences [physics] 021105 building & construction General Materials Science Water diffusion Composite material Diffusion (business) 0210 nano-technology |
| Zdroj: | Cement and Concrete Research Cement and Concrete Research, Elsevier, 2017, 95, pp.257--269. ⟨10.1016/j.cemconres.2017.02.014⟩ Cement and Concrete Research, 2017, 95, pp.257--269. ⟨10.1016/j.cemconres.2017.02.014⟩ |
| ISSN: | 0004-0088 0008-8846 |
| DOI: | 10.1016/j.cemconres.2017.02.014⟩ |
| Popis: | WOS:000400880100027; International audience; 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. (C) 2017 Elsevier Ltd. All rights reserved. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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