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54. Comparison of two concrete rheometers for shear thickening behaviour of SCC



Title: 54. Comparison of two concrete rheometers for shear thickening behaviour of SCC
Author(s): D. Feys, G. Heirman, G. De Schutter, R. Verhoeven, L. Vandewalle, D. Van Gemert
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: 365 - 370
Total Pages: 6
Nb references: 9
Language: English


Abstract: Traditionally, the rheological behaviour of fresh Self Compacting Concrete is described by the Bingham model, being the basic model to perform comparative tests with different rheometers. On the other hand, several test results in Belgium and the surrounding countries indicate that shear thickening is occurring. As a result, the Bingham model is not applicable anymore and comparison must be done in another way.
In this paper, two rheometers - Contec Viscometer 5 and Tattersall Mk-II rheometer - are compared for non-linear behaviour. After transformation of the data into fundamental rheological units, the results indicate that the Tattersall Mk-II rheometer shows very similar curves as for the Contec viscometer, but higher shear stresses at a certain shear rate are occurring. When the SCC is too fluid, the results of the rheometers are deviating from each other.


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