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Numerical simulation of multi-species transport through saturated concrete during a migration test - MsDiff code

Författare

Summary, in English

A numerical model, called MsDiff (Multi-Species DIFFusion), based on a finite difference method and on the Nernst-Planck relation has been developed. The concentration profiles for several species (i.e., Cl-, Na+, K+ and OH-), the flux and the potential profile are computed. The simulations allow having a better understanding about the phenomena involved during the transport of different ions into concrete under the influence of an electrical field. The effect of various parameters as the pore solution composition, the non-ideality of the solutions or the chloride binding, is also discussed. Finally, it is shown how the effective diffusion coefficient of chlorides could be measured experimentally by using the LMDC test method.

Publiceringsår

2000

Språk

Engelska

Sidor

1581-1592

Publikation/Tidskrift/Serie

Cement and Concrete Research

Volym

30

Issue

10

Dokumenttyp

Artikel i tidskrift

Förlag

Elsevier

Ämne

  • Materials Engineering

Nyckelord

  • Migration tests
  • Numerical model
  • Chloride ions
  • LMDC test method

Status

Published

ISBN/ISSN/Övrigt

  • ISSN: 0008-8846