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Small Strain, Low Shear Rate Rheometry of Cohesive Sediments

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

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

Applied Stress Wall Slip Cohesive Sediment Volumetric Concentration Applied Torque 
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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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