Modeling the Time-Dependent Rheological Behavior of Clays Used in Fabrication of Ceramic

Authors: L. Hammadi, N. Boudjenane, R. Houdjedje, R. Reffis, M. Belhadri

Abstract:

In this study, we investigated the thixotropic behavior of two clays used in fabrication of ceramic. The structural kinetic model (SKM) was used to characterize the thixotropic behavior of two different kinds of clays used in fabrication of ceramic. The SKM postulates that the change in the rheological behavior is associated with shear-induced breakdown of the internal structure of the clays. This model for the structure decay with time at constant shear rate assumes nth order kinetics for the decay of the material structure with a rate constant.

Keywords: Ceramic, clays, structural kinetic model, thixotropy, viscosity.

Digital Object Identifier (DOI): doi.org/10.5281/zenodo.1110846

References:

[1] B.Abu-Jdayil, “Rheology of sodium and calcium bentonite–water dispersions: Effect of electrolytes and aging time,” International Journal of Mineral Processing, vol.98, 2011, pp.208-213
[2] F.Gridi-Bennadj, G.L. Lecomte-Nana, J.P. Bonnet, S. Rossignol, “Rheological properties of montmorillonitic clay suspensions: Effect of firing and interlayer cations, ”Journal of the European Ceramic Society. vol.32, 2011, pp.2809-2817.
[3] A.Alemdar, N.Oztekin, N.Gungor, O.I.Ece, F.B.Erim, “Effects of polyethylene mine adsorption on the rheological properties of purified bentonite suspensions,” Colloid Surf, vol. A 252,2005,pp.95–98.
[4] H. Nciri, M. Benna-Zayani, M. Stambouli, N. Kbir-Ariguib, M. Trabelsi-Ayadi, V.Rosilio, J.L.Grossiord, “Influence of clay addition on the properties of olive oil in water emulsions,” Applied Clay Science. vol.43, 2009, pp.383–391.
[5] L. Hammadi, N.Boudjenane, M. Belhadri, “Effect of polyethylene Oxide (PEO) and shear rate on rheological properties of bentonite clay” Applied Clay Science. vol.99, 2014, pp.306–311.
[6] R. Goh, Y. K. Leong, B. Lehane “Bentonite slurries-zeta potential, yield stress, adsorbed additive and time-dependent behavior,’’ Rheol Acta, vol .50, 2011.pp.29–38
[7] L.Hammadi, A.Ponton, M.Belhadri, “Temperature effect on shear flow and thixotropic behavior of residual sludge from wastewater treatment plant,” Mechanics of Time-Dependent Materials,vol.17, 2013, pp.401- 412.
[8] A.Besq, C.Malfoy, A.Pantet, P.Monneta, D.Righi, D “Physicochemical characterisation and flow properties of some bentonite muds,” Applied Clay Science, vol.23,2003, pp.275– 286.
[9] Q.D. Nguyen and D.V. Boger, "Thixotropic behavior of concentrated bauxite residue suspensions,” RheologicActa, vol.24, 1985, pp. 427– 437.