The Diffusion Coefficient of Ionic Species Through Unsaturated Materials
| Autor: | Xavier Bourbon, Hugo Mercado-Mendoza, Sylvie Lorente |
|---|---|
| Přispěvatelé: | Laboratoire Matériaux et Durabilité des constructions (LMDC), Université Toulouse III - Paul Sabatier (UT3), Université Fédérale Toulouse Midi-Pyrénées-Université Fédérale Toulouse Midi-Pyrénées-Institut National des Sciences Appliquées - Toulouse (INSA Toulouse), Institut National des Sciences Appliquées (INSA)-Institut National des Sciences Appliquées (INSA), Agence Nationale pour la Gestion des Déchets Radioactifs (ANDRA), Institut National des Sciences Appliquées - Toulouse (INSA Toulouse), 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) |
| Rok vydání: | 2012 |
| Předmět: |
Materials science
General Chemical Engineering 0211 other engineering and technologies Analytical chemistry Impedance spectroscopy Ionic bonding 02 engineering and technology migration Chloride Catalysis Electrical resistance and conductance Porous material 021105 building & construction medicine equivalent-circuit model portland-cement concrete chloride diffusion function minimization Saturation paste 021001 nanoscience & nanotechnology Microstructure 6. Clean water Dielectric spectroscopy [SPI.GCIV]Engineering Sciences [physics]/Civil Engineering electrochemical impedance spectroscopy mortar Equivalent circuit 0210 nano-technology Porous medium Saturation (chemistry) medicine.drug |
| Zdroj: | Transport in Porous Media Transport in Porous Media, Springer Verlag, 2013, 96 (3), pp.469--481. ⟨10.1007/s11242-012-0100-3⟩ Transport in Porous Media, 2013, 96 (3), pp.469--481. ⟨10.1007/s11242-012-0100-3⟩ |
| ISSN: | 1573-1634 0169-3913 |
| Popis: | WOS:000313654300003; International audience; This paper documents the measurement of the chloride diffusion coefficient through partially saturated porous materials. The method was electrochemical impedance spectroscopy, and it was validated by comparison to migration tests in fully saturated samples. A microstructure-based electrical equivalent circuit was developed to obtain the main features of the sample including the material electrical resistance for any water saturation degree. It is shown that the chloride diffusion coefficient varies over four orders of magnitude when the material is almost dry to fully saturated. |
| Databáze: | OpenAIRE |
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