Rheopexy and tunable yield stress of carbon black suspensions

@inproceedings{Ovarlez2012RheopexyAT,
  title={Rheopexy and tunable yield stress of carbon black suspensions},
  author={Guillaume Ovarlez and Laurent Tocquer and Franccois Bertrand and Philippe Coussot},
  year={2012}
}
We show that besides simple or thixotropic yield stress fluids there exists a third class of yield stress fluids. This is illustrated through the rheological behavior of a carbon black suspension, which is shown to exhibit a viscosity bifurcation effect around a critical stress along with rheopectic trends, i.e., after a preshear at a given stress the fluid tends to accelerate when it is submitted to a lower stress. Viscosity bifurcation displays here original features: the yield stress and the… CONTINUE READING

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Yield stress fluids and ageing

  • Rheologica Acta
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