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ASTM D 4648 Document Information:
Title
Standard Test Method for Laboratory Miniature Vane Shear Test for Saturated Fine-Grained Clayey Soil
ASTM International
Publication Date:
Jun 1, 2005
Scope:
(Footnote *)
This test method covers the miniature vane test in very soft to stiff
saturated fine-grained clayey
soils (φ = 0). Knowledge of the nature of the soil in which each
vane test is to be made is
necessary for assessment of the applicability and interpretation of
the test results.
NOTE 1 - It is recommended that the miniature vane test be conducted
in fine-grained, predominately
clay soils with an undrained shear strength less than 1.0 tsf (100
kPa). Vane failure conditions in
higher strength clay and predominantly silty soils may deviate from
the assumed cylindrical failure
surface, thereby causing error in the measured strength.
This test method includes the use of both conventional calibrated
torque spring units (Method A)
and electrical torque transducer units (Method B) with a motorized
miniature vane shear device.
Laboratory vane is an ideal tool to investigate strength anisotropy in
the vertical and horizontal
directions, if suitable samples (specimens) are available.
The values stated in inch-pound units are to be regarded as the
standard. The values given in
parentheses are for information only. All measured and calculated
values shall conform to the
guidelines for significant digits and rounding established in Practice
D 6026.
This standard does not purport to address all of the safety concerns,
if any, associated with its
use. It is the responsibility of the user of this standard to
establish appropriate safety and
health practices and determine the applicability of regulatory
limitations prior to use.
Footnote * - A Summary of Changes section appears at the end of this
standard.
Keywords:
- clays
- laboratory
- miniature
- remolded
- saturated
- shear value
- undisturbed
- undrained strength
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