64. Investigations of the fluid structure interaction on the flow behaviour of self-compacting concrete regarding the numerical flow simulation

Title: 64. Investigations of the fluid structure interaction on the flow behaviour of self-compacting concrete regarding the numerical flow simulation
Author(s): S. Uebachs, W. Brameshuber
Paper category : conference
Book title: 5th International RILEM Symposium on Self-Compacting Concrete
Editor(s): G. De Schutter and V. Boel
Print-ISBN: 978-2-35158-047-9
e-ISBN: 978-2-35158-088-2
Publisher: RILEM Publications SARL
Publication year: 2007
Pages: 429 - 435
Total Pages: 7
Nb references: 8
Language: English

Abstract: The Fluid Structure Interaction (FSI) has a considerable influence on the flow behaviour of the Self-Compacting Concrete (SCC) in the formwork. FSI describes the friction between a flowing SCC and the surface of the formwork. This paper includes a description of the influencing factors on the FSI at flow processes of SCC. These have been determined considering the respective literature concerning existing investigations on the FSI. The relevance of the influencing factors determined, e. g. the viscosity of the SCC, the condition of the formwork surface, the flow velocity and the fresh concrete pressure of SCC, have been verified in tests using a self-developed low pressure tribometer.
The evaluation of all test results confirmed a significant influence of the formwork surface, the fresh concrete pressure and the viscosity of the SCC. The frictional coefficient was determined in the tribometer tests. In this paper, the approach of an equation of state which describes the frictional coefficient depending on the formwork surface and the fresh concrete pressure is developed.

Online publication: 2009-06-16
Publication type : full_text
Public price (Euros): 0.00