In this closure of the discussion, the authors note that the purpose of the study was to evaluate the influence of angular shear velocity on the vane shear strength of soft highly plastic marine soils, and not to consider seimipervious or nonplastic soils. The authors comment on observations by discussers which relate to: angular shear velocity (this is not a unique parameter related to any intrinsic shear strength property); and the relationships between soil consistency, shear strength, vane blade size and rotation rate. The authors note that the discusser compares the vane rotation rate and shear velocity values obtained in the study with additional data that corroborates significant differences in shearing velocity that can exist between different field vanes and between field and laboratoy vanes. The use of a standard peripheral shear velocity does not eliminate all of the uncertainties associated with vane size and rotation rate; however, the establishment of a standard rate will better provide a basis for evaluating the influence of soil consistency, vane penetration disturbance, anisotropy, progressive failure etc. on vane shear strength.

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Filing Info

  • Accession Number: 00193593
  • Record Type: Publication
  • Report/Paper Numbers: ASCE 12697
  • Files: TRIS
  • Created Date: Jun 13 1979 12:00AM