A coupled thermo-hygro-chemo-mechanical model for the simulation of spalling of concrete subjected to fire loading
1 FCP – Fritsch, Chiari & Partner ZT GmbH, Vienna, Austria
2 Institute for Mechanics of Materials and Structures (IMWS), Vienna University of Technology, Vienna, Austria
3 Material-Technology Innsbruck (MTI), University of Innsbruck, Innsbruck, Austria
The presented research work contributes to the realistic simulation of the stress state within fire-loaded concrete in order to attain insight into the development and occurrence of the critical state right before and during the event of spalling. A coupled thermo-hygro-chemo-mechanical code simulating the stress state as a consequence of both thermo-hygral and thermo-mechanical processes is presented together with an embedded strong-discontinuity model which is capable of capturing and tracking the propagation of a crack evolving in concrete as a quasi-brittle material. Combination of the two mentioned models is currently under way. With the resulting coupled model, it will be possible to take into account all major couplings, allowing to realistically simulate the spalling process.
© Owned by the authors, published by EDP Sciences, 2013
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