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Hai Dang Le, Geert De Schutter, El-Hadj Kadri, Salima Aggoun, Jan Vierendeels, Serge Tichko, Peter Troch
Computational fluid dynamics calibration of Tattersall MK-II type rheometer for concrete
Appl. Rheol. 23:3 (2013) 34741 (12 pages)
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Currently more and more researches have been performing concerning the numerical simulation of the behavior of fresh concrete
during pumping or formwork filling. Adequate implementation of the rheology properties of fresh concrete is a determinant
key to obtain realistic simulations. However, in many cases, the rheological parameters of the fresh concrete as determined
by rheometers are not sufficiently accurate. The common principle of all the rheometers is not to measure directly the
rheological parameters of concrete but to measure some basic physical parameters (torque, velocity, pressure, ...) that that in
some cases allow the calculation of the rheological parameter in terms of fundamental physical quantities. Errors can be
caused by undesired flow phenomena which are not taken into the prediction formulas and by the inaccurate prediction formulas
themselves. This is directly related to the poor calibration of the rheometer that cannot cover all ranges of materials.
This paper investigates the calibration of the Tattersall MK-II rheometer by performing the numerical simulation for a
tremendous range of concrete flowing in the rheometer, using computational fluid dynamics (CFD). This allows to quickly and
accurately obtain the rheological properties of fresh concrete, which can then be used consistently for further flow simulations.
This method can be applied for all types of rheometer.
► Cite this publication as follows:
Le HD, DeSchutter G, Kadri E, Aggoun S, Vierendeels J, Tichko S, Troch P: Computational fluid dynamics calibration of Tattersall MK-II type rheometer for concrete, Appl. Rheol. 23 (2013) 34741.
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