Computational homogenization of micro-structural damage due to frost in hardened cement paste
- verfasst von
- M. Hain, Peter Wriggers
- Abstract
Based on a micro-structural finite-element model using computer-tomography scans at micrometer length-scale, damage due to frost within hardened cement paste (HCP) is evaluated. In order to verify the microscopic constitutive equations, a multi-scale model is introduced which allows a comparison with experimental data at macro-level. Subsequently, damage due to frost is simulated numerically: the water-filled pores of HCP increase in volume during a freezing process which yields an inelastic material behavior. Numerical simulations at micro-structural level are performed for different moistures and temperatures, and an effective correlation between moisture, temperature and the inelastic material behavior is obtained. Finally, thermo-mechanical coupling is introduced and an effective constitutive equation for HCP is developed using the abovementioned temperature-moisture-damage correlation.
- Organisationseinheit(en)
-
Institut für Kontinuumsmechanik
- Typ
- Artikel
- Journal
- Finite Elements in Analysis and Design
- Band
- 44
- Seiten
- 233-244
- Anzahl der Seiten
- 12
- ISSN
- 0168-874X
- Publikationsdatum
- 01.03.2008
- Publikationsstatus
- Veröffentlicht
- Peer-reviewed
- Ja
- ASJC Scopus Sachgebiete
- Analysis, Ingenieurwesen (insg.), Computergrafik und computergestütztes Design, Angewandte Mathematik
- Elektronische Version(en)
-
https://doi.org/10.1016/j.finel.2007.11.020 (Zugang:
Unbekannt)
