Validation of CTU Prague thermo-mechanical simulator with TU Graz restraining frame experiments

Author(s): Karolina Hájková, Dirk Schlicke, Katrin Turner, Vít Šmilauer, Petr Havlásek, Peter Heinrich
Paper category: Proceedings
Book title: Proceedings of the 2nd International RILEM/COST Conference on Early Age Cracking and Serviceability in Cement-based Materials and Structures Volume 2
Editor(s): Stéphanie Staquet and Dimitrios Aggelis
Publisher: RILEM Publications SARL
Publication year: 2017
Pages: 703-708
Total Pages: 6
Language : English

Abstract: Serviceability and durability of concrete structures is strongly affected by presence of cracks. In this context, the avoidance of restraint-induced cracking - and in unavoidable cases the reduction of its intensity - is of major importance. At CTU Prague a thermo-mechanical coupled material model was elaborated in order to predict temperature field, resulting stresses as well as crack formation in a concrete member. The thermal part uses Hydrating model, considering the mix design and thermal boundary conditions. The mechanical part combines extended B3 creep model with isotropic damage model for cracking. Independent of this, a comprehensive experimental study of the occurring stress history in restrained concrete members was conducted at TU Graz.
This paper reports on the validation of the complex thermo-mechanical material model of CTU Prague on basis of the recalculation of the macroscopic experiments of TU Graz. The validated model enables now a systematic study of important parameters for reliable computational prediction of hardening-induced cracking of concrete structures.

Online publication : 2017
Publication type : full_text
Public price (Euros) : 0.00

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