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Comparing the steel-concrete interface state and its electrochemical impedance
The object of this investigation is to validate a model of electrical impedance of steel-concrete interface, which has been previously published. In this model, a part of the impedance is related with the products formed directly on steel. Another part of the impedance corresponds to the transition...
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Published in: | Cement and concrete research 1996-02, Vol.26 (2), p.253-266 |
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Main Authors: | , , , |
Format: | Article |
Language: | English |
Subjects: | |
Citations: | Items that this one cites Items that cite this one |
Online Access: | Get full text |
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Summary: | The object of this investigation is to validate a model of electrical impedance of steel-concrete interface, which has been previously published. In this model, a part of the impedance is related with the products formed directly on steel. Another part of the impedance corresponds to the transition zone between steel and concrete. The third part corresponds to the inhomogeneity of the products formed at the interface.
The validation of this model was obtained by testing reinforced concrete specimens made of three cements and aged in solutions containing chloride or sulphate. The results obtained with measuring electrochemical impedance were compared with the actual condition of steel.
L'objet de cette étude est de valider un modèle électrique publié antérieurement, sur l'impédance de l'interface acier — béton. Dans ce modéle, une partie de l'impédance est liće aux produits directement formés sur l'acier. Une autre partie de l'impédance correspond à la zone de transition entre l'acier et le béton. La troisième partie correspond à l'hétérogénéité des produits formés à l'interface.
La validation de ce modèle a été obtenue en essayant des éprouvette de béton armé armé, faites avec trois ciments et placées dans des solutions contenant des chlorures ou des sulfates. Les résultats de mesure d'impédance électrochimique ont été comparés à l'état réel de l'acier. |
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ISSN: | 0008-8846 1873-3948 |
DOI: | 10.1016/0008-8846(95)00214-6 |