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Erscheinungsjahr
- 2016 (2) (entfernen)
Dokumenttyp
Sprache
- Englisch (2)
Schlagworte
- CFD (1)
- CFD simulation (1)
- Casting (1)
- Fresh concrete (1)
- Porous medium (1)
- Reinforcement (1)
- Rheology (1)
- Self-compacting concrete (1)
- Simulation (1)
The paper addresses numerical modelling of fresh self-compacting concrete. In the previous studies, a numerical tool for casting prediction is built based on the assumption that fresh concrete behaves as a yield-stress fluid and treating zones with rebars as porous media. The present contribution discusses the determination of material parameters, which are required as an input for numerical simulations of casting processes.
Numerical simulations of concrete castings are complex and time consuming. In order to decrease simulation time and to simplify simulation procedure, an innovative modelling approach, which treats reinforced sections in a formwork as porous media, was proposed. In the previous studies, this numerical model was proved suitable to simulate casting of model yield-stress fluids through reinforced elements. This article focuses on the experimental validation of the proposed model at the concrete scale. For this purpose, a large-scale laboratory casting of a highly reinforced beam is performed. The casting process is numerically simulated and the numerical results are compared to the experimental measurements.