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PROCEEDINGS OF THE FIFTEENTH INTERNATIONAL CONFERENCE ON CIVIL, STRUCTURAL AND ENVIRONMENTAL ENGINEERING COMPUTING
Edited by: J. Kruis, Y. Tsompanakis and B.H.V. Topping
Coupled Heat and Moisture Transport in Partially Damaged Concrete
J. Kruis and T. Koudelka
Department of Mechanics, Faculty of Civil Engineering, Czech Technical University in Prague, Czech Republic
J. Kruis, T. Koudelka, "Coupled Heat and Moisture Transport in Partially Damaged Concrete", in J. Kruis, Y. Tsompanakis, B.H.V. Topping, (Editors), "Proceedings of the Fifteenth International Conference on Civil, Structural and Environmental Engineering Computing", Civil-Comp Press, Stirlingshire, UK, Paper 4, 2015. doi:10.4203/ccp.108.4
Keywords: damage mechanics, moisture transport, isotropic damage model, fully coupled model, permeability.
The paper deals with coupling of damage mechanics and heat and moisture transport. Damage mechanics can be used for the description of stiffness degradation due to the loading exceeding a certain limit and micro-cracks or voids evolve.
These voids and cracks influence moisture transport significantly. For the low values of damage, the Picandet relation between permeability and crack width can be used while for the higher values of damage, the Hagen-Poisseuille law is exploited. The behaviour of a coupled thermo-hydro-mechanical model is demonstrated in a numerical simulation of a storage tank and a four-point shear test of a beam.
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