Journal ArticleDOI
Flow properties of coagulated colloidal suspensions: III. The elastic floc model
Bruce Firth,Robert J. Hunter +1 more
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In this article, the viscous flow behavior of a colloidal sol can be described in terms of the various contributions to the energy dissipation during flow, and a satisfactory description of the known features of the basic shear diagram can be obtained by attributing most of the dissipation to two processes: (i) viscous flows of the suspension medium around the flocs, which are the basic flow units, and (ii) the energy involved in stretching the flos in order to break floc doublets apart so that the amount of structure in the system isAbout:
This article is published in Journal of Colloid and Interface Science.The article was published on 1976-11-01. It has received 192 citations till now. The article focuses on the topics: Shear rate.read more
Citations
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Recognition, classification and mechanical description of debris flows
Philippe Coussot,M. Meunier +1 more
TL;DR: In this paper, a synthesis of the useful practical criteria of recognition is proposed, and two extreme debris flow types are thus distinguished: muddy debris flows and granular debris flows, and a critical review of recent advances in debris flow dynamic is then proposed.
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The role of reactive surface sites and complexation by humic acids in the interaction of clay mineral and iron oxide particles
TL;DR: In this article, the surface properties of clay and metal oxide particles, and the electrified mineral-water interfaces play a major role in formation, structure and strength of aggregates, any surface modification, especially by polyanionic organic complexants such as humic substances, has a significant affect on particle interaction.
Journal ArticleDOI
Rheological study of TBAB hydrate slurries as secondary two-phase refrigerants
TL;DR: In this article, the rheological properties of TBAB hydrates suspensions were investigated and an experimental determination of their flow behavior through flow rate and pressure drop measurements in laminar regime.
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Chemical and physical control of the rheology of concentrated metal oxide suspensions
TL;DR: In this paper, the effect of surface chemistry and particle physics on the rheology of metal oxide suspensions is reviewed, and the influence of variables, including solids concentration, particle size and size distributions are examined at various interparticle interaction conditions controlled by pH, electrolyte concentration, and/or addition of various additives for both flocculated and well-dispersed suspensions.
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Rheology of gelatinised starch suspensions
I. D. Evans,D. R. Haisman +1 more
TL;DR: The elastic moduli of the pastes considerably exceed the loss moduli, and both show only weak dependence on frequency over the range 0.002-2.5 Hz.
References
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Journal ArticleDOI
Effect of particle size on colloid stability
G. R. Wiese,T. W. Healy +1 more
TL;DR: In this paper, it was shown that the particle size effects of colloid stability increases, reaches a maximum and then decreases as the particle sizes increases, in apparent violation of D.L.O. theory.
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Computer simulation of floc formation in a colloidal suspension
TL;DR: In this article, a roughly isometric core is defined for aggregates which form by successive random addition of individual spherical particles without internal rearrangement as the floc grows, and the fraction of total particles within the core increases with increasing floe size and is nearly unity for visible flocs.
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The Plastic Flow Behavior of Flocculated Kaolin Suspensions
A. S. Michaels,J. C. Bolger +1 more
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A numerical approach to the problem of sediment volume
TL;DR: The mean number of neighbors for each sphere in this type of packing is 2.0 as mentioned in this paper, which corresponds to a model in which each sphere coheres rigidly to the first sphere it contacts, but is inconsistent with strong forces operative over an appreciable range of distance.
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Morphology of aggregates: VI. Effective volume of aggregates of carbon black from electron microscopy; Application to vehicle absorption and to die swell of filled rubber
TL;DR: In this paper, the volume of solid in an aggregate is computed from the particle size and projected area (as measured with the electron microscope), with the use of a relation based on floc simulation, and the packing volume of an aggregate at the end point is taken heuristically as equivalent to that of a sphere of the same projected area.