Numerical modelling of SCC flow through reinforced sections

Figure: K. Vasilic, B. Meng, H. C. Kuhne, and N. Roussel

The illustration of the basic idea, reinforcement (left), porous medium approximation (right)

Figure: K. Vasilic, B. Meng, H. C. Kuhne, and N. Roussel

Figure: K. Vasilic, W. Schmidt, H. C. Kuehne, and N. Roussel

Front and top view of Plexiglas container with four different reinforcement zones. A ramp is constructed on the pouring side of the container

Figure: K. Vasilic, W. Schmidt, H. C. Kuehne, and N. Roussel

Figure: BAM

The filling form made of Plexiglas and the funnel filled with concrete. The experiment stared by pulling a gate on the bottom of the funnel

Figure: BAM

Setup for numerical simulation, porous medium analogy

Figure: BAM

Figure: K. Vasilic, W. Schmidt, H. C. Kuehne, and N. Roussel

The material shape when the flow stops, experiment versus numerical simulation. High yield stress concrete = 71 Pa (SCC1) and medium yield stress concrete =36 Pa (SCC2)

Figure: K. Vasilic, W. Schmidt, H. C. Kuehne, and N. Roussel

The study introduces the porous medium model for the simulation of concrete flow through highly-reinforced sections. It shows that numerical simulations can predict concrete behavior during casting and help to avoid expensive mistakes.

In the last decades, numerical simulations of fresh concrete flow have gained increasing importance in the concrete industry [1, 2]. They showed a potential to become an essential tool for better understanding of the material in fresh state and determination of material properties. Numerical simulations can also be used to predict concrete behavior during casting and can help engineers to avoid expensive mistakes on site, especially in case of complex and highly-reinforced elements. A promising field for application of numerical modelling is casting of Self-Compacting Concrete (SCC), since the...