Small Strain, Low Shear Rate Rheometry of Cohesive Sediments

  • A. E. James
  • D. J. A. Williams
  • P. R. Williams
Conference paper

Abstract

Elastic and yield phenomena of cohesive sediments are usefully studied with pulse shearometry and an applied stress rheometer combined with vane geometry. These sediments are elastico-viscous materials at volumetric concentrations ϕ equal to or greater than the critical concentrations ϕ SF at which a space-filling network exists in the sediment. Vane geometry provides reliable estimates of yield stress (Γ y ) in fresh, undisturbed sediment. Γ y and shear rigidity modulus G are strongly dependent on ϕ.

Keywords

Clay Torque Sedimentation 

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References

  1. Barnes HA, Walters K (1985) The yield stress myth. Rheologica Acta 24:323–329CrossRefGoogle Scholar
  2. Dzuy NQ, Boger DV (1983) Yield stress measurement for concentrated suspensions. J Rheol 27(4):321–349CrossRefGoogle Scholar
  3. Houwink R (1971) Elasticity, plasticity and structure of matter. Cambridge University PressGoogle Scholar
  4. James AE, Williams DJA, Williams PR (1987) Direct measurement of static yield properties of cohesive suspensions. Rheological Acta 26:437–446CrossRefGoogle Scholar
  5. Jones TER, Brindley G (1976) A study of the rheological properties of cement pastes. In: Proc Conf University of Sheffield, 8–9 April 1976, pp 134–143Google Scholar
  6. Keentok M (1982) The measurement of yield stress of Uquids. Rheologica Acta 21:325–332CrossRefGoogle Scholar
  7. Mehta AJ, Maa P-Y (1986) Waves over mud: modelling erosion. In: Wang SY, Sheng HW (eds) 3rd International Symposium on River Sedimentation, University of Mississippi, 31 March-4 April 1986Google Scholar
  8. Smith TL, Bruce CA (1979) Intrinsic viscosities and other rheological properties of flocculated suspensions of nonmagnetic and magnetic ferric oxides. J Colloid Interface Sci 72(1):13–25CrossRefGoogle Scholar
  9. Thornton S (1953) The measurement of the absolute viscosity of anomalous fluids: 1 — the measurement of the time dependence of viscosity of thixotropic materials. Proc Phys Soc B66:115–120Google Scholar
  10. Van den Tempel M (1961) Mechanical properties of plastic disperse systems at very small deformations. J Colloid Sci 16:284–296CrossRefGoogle Scholar
  11. Whorlow RW (1980) Rheological techniques. Halsted, OxfordGoogle Scholar
  12. Zosel A (1982) Rheological properties of disperse systems at low shear stresses. Rheologica Acta 21:72–80CrossRefGoogle Scholar

Copyright information

© Springer-Verlag Berlin Heidelberg 1988

Authors and Affiliations

  • A. E. James
    • 1
  • D. J. A. Williams
    • 2
  • P. R. Williams
    • 1
    • 2
  1. 1.Oceanography DepartmentUK
  2. 2.Chemical Engineering DepartmentUniversity College of SwanseaSwanseaUK

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