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Numerical simulation of multi-species diffusion

In English

Författare

Summary, in English

A numerical model has been developed to simulate the transport of several ionic species across a saturated concrete or mortar sample. The chloride binding as well as the electrical coupling between the different ionic fluxes are included in the model by using the Nernst-Planck system of equations. This model highlights which parameters affect substantially chloride penetration into reinforced concrete structures and then shows that the use of Fick's first law in a predictive model for chloride penetration is strongly challenged. The simulations are in good agreement with diffusion-cell experiments and membrane potential measurements. (23 refs.)

Publiceringsår

2000

Språk

Engelska

Sidor

566-573

Publikation/Tidskrift/Serie

Materials and Structures

Volym

33

Issue

9

Dokumenttyp

Artikel i tidskrift

Förlag

Springer

Ämne

  • Materials Engineering

Nyckelord

  • Bond strength (materials)
  • Computer simulation
  • Concrete construction
  • Concretes
  • Ionic strength
  • Ions
  • Mathematical models
  • Mortar
  • Chloride binding
  • Chloride penetration
  • Electrical coupling
  • Ionic fluxes
  • Reinforced concrete structures

Status

Published

ISBN/ISSN/Övrigt

  • ISSN: 1359-5997