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- Title
Macroscopic diffusivity in concrete determined by computational homogenization.
- Authors
Nilenius, Filip; Larsson, Fredrik; Lundgren, Karin; Runesson, Kenneth
- Abstract
SUMMARY Effective moisture and chloride ion diffusivity coefficients for concrete are determined by computational homogenization, where concrete is modeled on the mesoscale as a heterogenous three-phase composite material. By imposing moisture and chloride ion gradients on a representative volume element, effective macroscale properties are obtained through finite element analysis. A parametric study of the effects of the ballast content was carried out. The numerical results correspond well with an estimate of the Hashin-Shtrikman type available in the literature. The computational homogenization strategy proposed here also includes the interfacial transition zone, and its influence on the effective diffusivity coefficients is assessed. Copyright © 2012 John Wiley & Sons, Ltd.
- Subjects
ASYMPTOTIC homogenization; PARTIAL differential equations; COMPOSITE materials research; DIFFUSION; FINITE element method
- Publication
International Journal for Numerical & Analytical Methods in Geomechanics, 2013, Vol 37, Issue 11, p1535
- ISSN
0363-9061
- Publication type
Article
- DOI
10.1002/nag.2097