Image processing of shear flow in a vane rheometer for clay mineral suspensions

Author(s): Alexandre Pierre, Arnaud Perrot, Aymeric Histace, E-H. Kadri
Paper category: Proceedings
Book title: International RILEM Workshop on Rheological Measurements of Cement-based Materials IRWRMC’18
Editor(s): Chafika DJELAL, Yannick VANHOVE
Print-ISBN: 978-2-35158-230-5
e-ISBN: 978-2-35158-231-2
Publisher: RILEM Publications SARL
Publication year: 2019
Pages: 43 - 47
Total Pages: 5
Language: English

Abstract: This study presents results from the rheological measurement of clay suspensions using vane geometry in a wide gap
configuration. It focuses on how a measurement of viscosity cannot be effective for two reasons: the limits of the vane geometry itself and the limits of the material depending on its content of solid particles. Image analysis of the flow while shearing the material is carried out to relate the flow behavior. Depending on the solid volume fraction of the particles in the mixture, we relate the macroscopic behavior using the image analysis and the shear-flow curves to the rheophysical regime of the flow of the suspensions. Therefore, this paper has two simultaneous goals: the first one is to describe the physical phenomena which control macroscopic behavior and the second one is to highlight the limits of the vane geometry for the viscosity measurement of mineral suspensions like kaolinite pastes.

Online publication : 2019
Publication type : full_text
Public price (Euros) : 0.00