A method of two-scale chemo-thermal-mechanical coupling for concrete
Author
Wu, T.
Temizer, İlker
Wriggers, P.
Date
2011Source Title
Proceedings of the 11th International Conference on Computational Plasticity, COMPLAS 2011
Publisher
CIMNE
Pages
1626 - 1637
Language
English
Type
Conference PaperItem Usage Stats
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Abstract
The Alkali Silica Reaction(ASR) is one of the most important reasons to cause damage in cementitious constructions, which can be attributed to the expansion of hydrophilic gel produced in the reaction. In this contribution, the chemical extent is described depending on the temperature and it has influences on damage parameters. Expansions of the gel are assumed to only happen in the micropores of Hardened Cement Paste. Afterwards, the homogenization of damage in the microscale is initialized and the effective damage can be applied in the mesoscale directly. Moreover, parameter identification is implemented to extract the effective inelastic consititutive equation. In all, 3D multiscale chemo-thermo-mechanical coupled model is set up to describe the damage in the concrete due to ASR.
Keywords
Alkali silica reactionCoupling
Coupled models
Damage parameter
Hardened cement paste
Homogenization
Hydrophilic gel
Mesoscale
Micro-scales
Micropores
Multiscales
Concretes
Plasticity
Silica
Three dimensional
Thermal expansion