Numerical simulation of multi-species diffusion
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