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DYNA
versão impressa ISSN 0012-7353versão On-line ISSN 2346-2183
Resumo
LIZARAZO MARRIAGA, JUAN e CLAISSE, PETER. OPTIMIZATION OF THE IONIC TRANSPORT RELATED PROPERTIES OF CONCRETE AND SIMULATION OF THE ASTM C1202 TEST. Dyna rev.fac.nac.minas [online]. 2009, vol.76, n.160, pp.185-194. ISSN 0012-7353.
In this paper the fluxes of the principal ionic species present (Cl, OH, Na, and K) during an ASTM C1202 test Standard Test Method for Electrical Indication of Concrete's Ability to Resist Chloride Ion Penetration were modelled by a finite differences approach using the Nernst - Plank equation with a variable electrical field. This equation describes the ionic movements in saturated porous materials. To achieve this, a new electrochemical test has been carried out and its results were optimized to obtain the intrinsic diffusion, the hydroxide composition of the pore solution, the porosity, and the chloride capacity of binding
Palavras-chave : Rapid chloride permeability test; chloride; migration; concrete.