The flow behavior of bentonite colloidal suspensions is given i n terms of the stress-strain relations with respect to variables of concentration, suspension medium, hydrogen-ion concentration, temperature, a n d the successive application of shear stress. Repeated cycling (successive reruns of upcurve a n d downcurve) caused thixotropic hysteresis loops which decreased in size to a final constant a n d reproducible flow curve. A hysteresis loop did not appear for a mixture of less than 20 wt% bentonite a n d glycerin. The flow curves are discussed i n terms of bondings in "cardhouse" a n d "blockhouse" models for dilute a n d concentrated suspensions respectively. Eyring's rate theory of viscosity is discussed briefly in terms of the well-known generalized viscosity equation which was applied successfully t o given flow curves. Physical and chemical characterizations are compared in terms of thixotropic flow models for aqueous, glycerol, a n d oil (Bentone grease) suspensions.
scite is a Brooklyn-based organization that helps researchers better discover and understand research articles through Smart Citations–citations that display the context of the citation and describe whether the article provides supporting or contrasting evidence. scite is used by students and researchers from around the world and is funded in part by the National Science Foundation and the National Institute on Drug Abuse of the National Institutes of Health.