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Influence of voltage on chloride diffusion coefficients from chloride migration tests
Obtaining diffusion coefficients using steady state diffusion cells can be quite slow, especially for high performance concrete. Research into electrical migration methods is now common. The magnitude of polarization across the anode and cathode in this type of experiment can be quite significant particularly if theoretical relationships such as the Nernst-Planck equation are applied to the conduction cell test data in order to calculate diffusion coefficients. The resulting error increases as applied potential decreases. Total polarization was found to range from 1.91 V to 2.36 V for 6 Volts and 30 Volts nominal applied potential with the test configuration described here. Calculated diffusion coefficients were reasonably constant over the voltage range tested for the non-steady state migration case but tended to increase with increased voltage for the steady state case.
Influence of voltage on chloride diffusion coefficients from chloride migration tests
Obtaining diffusion coefficients using steady state diffusion cells can be quite slow, especially for high performance concrete. Research into electrical migration methods is now common. The magnitude of polarization across the anode and cathode in this type of experiment can be quite significant particularly if theoretical relationships such as the Nernst-Planck equation are applied to the conduction cell test data in order to calculate diffusion coefficients. The resulting error increases as applied potential decreases. Total polarization was found to range from 1.91 V to 2.36 V for 6 Volts and 30 Volts nominal applied potential with the test configuration described here. Calculated diffusion coefficients were reasonably constant over the voltage range tested for the non-steady state migration case but tended to increase with increased voltage for the steady state case.
Influence of voltage on chloride diffusion coefficients from chloride migration tests
Einfluß einer elektrischen Spannung bei der Chloriddiffusionsmessung auf den Chloriddiffusionskoeffizienten
McGrath, P.F. (author) / Hooton, R.D. (author)
Cement and Concrete Research ; 26 ; 1239-1244
1996
6 Seiten, 2 Bilder, 2 Tabellen, 11 Quellen
Article (Journal)
English
Influence of Voltage on Chloride Diffusion Coefficients from Chloride Migration Tests
| British Library Online Contents | 1996
Influence of Voltage on Chloride Diffusion Coefficients from Chloride Migration Tests
| Online Contents | 1996
Measuring Chloride Diffusion Coefficients From Non-Steady State Diffusion Tests
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Measuring Chloride Diffusion Coefficients From Non-Steady State Diffusion Tests
| British Library Online Contents | 1998
Measuring chloride diffusion coefficients from non-steady state diffusion tests
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