Fick's 2nd law - Complete solutions for chloride ingress into concrete – with focus on time dependent diffusivity and boundary condition
Författare
Summary, in English
This report focuses on models of chloride ingress into concrete that are based on mathematical solutions of Fick's second law. In recent years a lot of confusion has been identified concerning these models. In some cases time-dependencies of diffusivity have been used in a mathematically incorrect way. In other cases field and laboratory data from one way of describing the time-dependency of these diffusivities has been used in models that are based on another model. This is now clarified in this report. Some of the clarifications are completely new, concerning the relationship between the age exponents in the time-dependency of the "instantaneous" and the "achieved" diffusivity.
Avdelning/ar
Publiceringsår
2009
Språk
Engelska
Publikation/Tidskrift/Serie
Report TVBM
Fulltext
Dokumenttyp
Rapport
Förlag
Division of Building Materials, LTH, Lund University
Ämne
- Materials Engineering
Nyckelord
- mathematical solutions
- surface chloride
- diffusivity
- time-dependent
- concrete
- chloride
- Fick's 2nd law
Status
Published
Report number
3146
ISBN/ISSN/Övrigt
- ISSN: 0348-7911
- TVBM-3146