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Electrical double layer effect on chloride migration in cement-based materials



Title: Electrical double layer effect on chloride migration in cement-based materials
Author(s): A. Aït-Mokhtar
Paper category : conference
Book title: Third International RILEM Workshop on Testing and Modelling Chloride Ingress into Concrete
Editor(s): C. Andrade and J. Kropp
Print-ISBN: 2-912143-48-9
e-ISBN: 2912143578
Publisher: RILEM Publications SARL
Publication year: 2004
Pages: 51 - 64
Total Pages: 14
Nb references: 10
Language: English


Abstract: A new method for operating chlorides electrodiffusion test is proposed. This method allows getting chlorides flux through the sample in steady state by using current transfer, which are obtained from a chronoamperometry. A comparison of results obtained by the model with those obtained by a classical dosage of chlorides in the downstream solution of the cell has been carried out for mortars and cement pastes. The model results seem to be closer to those of experimental dosage. We showed that it is not necessary to measure chloride concentration in upstream or downstream cell, but a simple chronoamperometry suffices to obtain transfer characteristics of the material tested.


Online publication: 2002-12-15
Publication type : full_text
Public price (Euros): 0.00
doi: 10.1617/2912143578.004