Multiscale Adaptive Simulation of Concrete Carbonation Including Microstructure Evolution

Claus-Justus Heine, Christian A. Möller, Malte A. Peter* and Kunibert G. Siebert

Concrete carbonation is a chemical degradation mechanism compromising the service life of reinforced concrete structures. Using a homogenization approach to upscale the associated reaction--diffusion system given in a porous medium, whose microstructure undergoes an evolution in time, an effective macroscopic limit model is obtained. To lower the complexity of numerical simulations further, an efficient adaptive finite element scheme for the limit problem is presented. The approach is generally applicable to reaction--diffusion problems in porous media.

Mathematics Subject Classification: 74F25 65M60 92E20

Keywords: Adaptive finite elements; Concrete carbonation; Simulations

Minisymposion: Adaptivity and Model Order Reduction in PDE Constrained Optimization