Field Vane Test (FVT)

The field vane test (FVT) was originated in the early 1990 and used as early as 1919 in Sweden by Olsson. Later in 1950, Cadling and Odenstad presented research work that helped make field vane test (FVT) a prominent in situ test for clays. FVT is primarily used to obtain the maximum undrained shear strength in soft to very soft saturated clays. Other in situ tests, for example the CPTU or DMT, often rely on the reference values obtained from the field vane test and also site-specific correlation could be developed to estimate the undrained strength from other in situ tests.

The result of Field vane test are primarily consisted of the followings.

  1. Maximum Undrained Shear Strength (at each test depth).
  2. Remolded Shear Strength (at each test depth)
  3. Sensitivity (i.e. Maximum undrained strength / Remolded strength).

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