Dynamic and rate-dependent yielding in model cohesive suspensions

  title={Dynamic and rate-dependent yielding in model cohesive suspensions},
  author={Richard Buscall and Peter J. Scales and Anthony D Stickland and Hui-En Teo and Tiara E. Kusuma and Daniel R. Lester},
  journal={arXiv: Soft Condensed Matter},
An experimental system has been found recently, a coagulated CaCO3 suspension system, which shows very variable yield behaviour depending upon how it is tested and, specifically, at what rate it is sheared. At P\'eclet numbers Pe > 1 it behaves as a simple Herschel Bulkley liquid, whereas at Pe < 1 highly non-monotonic flow curves are seen. In controlled stress testing it shows hysteresis and shear banding and in the usual type of stress scan, used to measure flow curves in controlled stress… Expand
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