The test, is performed as per IS : 2720 (Part XXX), is suitable for estimation of undrained shear strength of cohesive soils of low shear strength. The equipment listed below satisfies the requirements of IS: 2720 (Part XXX).
LABORATORY VANE SHEAR APPARATUS – HAND OPERATED
The apparatus comprises of the following.
(i) A torque applicator having a base with a hole for holding the specimen mould in position, supporting frame carrying torque head adjustable in height and a graduated drum to measure the deformation of springs.
(ii) A set of four springs, one each of 2 kg cm,4 kg cm, 6 kg cm and 8 kg cm.
(iii) A vane of size 12.0 x 24.0 mm long with a vane rod.
(iv) Specimen container to take a specimen of 50 mm dia x 75 mm high.
(v) Wooden carrying case for the complete apparatus.
LABORATORY VANE SHEAR APPARATUS – MOTORIZED
Same as Hsn.95 but torque head is electrically driven by a small reduction geared motor with a strain rate of 60 per minute approximately.
