Shear Testing Equipment
ASTM D3080 | AASHTO T236 | BS 1377:7 | CEN-ISO/TS 17892-10 | NF P94-071
Shearmatic EmS is a standalone automatic machine with Electromechanic Servoactuation for direct/residual shear testing. It can also automatically perform the oedometric consolidation tests using the dedicated accessories. It incorporates two high-resolution stepper motors with high precision transmissions.
27-WF21E80: SHEARMATIC EmS – Electromechanical Servoactuated technology, automatic direct and residual shear testing machine. 220-100 V / 50-60 Hz / 1 ph
Shear box assemblies (ordered separately) are manufactured from brass and designed to contain the water that surrounds the specimen.
They consist of a square box with a rigid walled round or square hole complete with adapter loading pad, retaining plate, 2 grids, 2 perforated grids and 2 porous plates.
Shear box assemblies and accessories / spares:
27-WF0215/B: Shear box assembly for 60 mm square specimens
The laboratory Shear Vane Apparatus measures the shear strength of cohesive soils and is particularly useful for soils with low shear strength. Shear vane testing is a fast and economical method of measuring the shear strength of clay compared with elaborate tri-axial shear or direct shear tests.
This apparatus tests undrained strength of soils, both in undisturbed and remoulded conditions.
27-WF17D30: Laboratory Vane Apparatus for soil shear strength determination
- 12.7 mm x 12.7 mm vane
- set of four calibrated springs each with deflection/load chart
Vanes (ordered separately):
27-WF1732: 25.4 mm x 25.4 mm vane
27-WF1733: 12.7 mm x 25.4 mm vane
27-WF1734: 12.7 mm x 19 mm vane
Optional upgrade with a motorized actuator for a constant rate of rotation
(to be ordered separately):
27-WF17D30/2: to BS 1377:7 Standard, Speed 6 to 12 °/min, 220V,50Hz,1Ph
27-WF17D30/3: to ASTM D4648 Standard, Speed 60 to 90 °/min, 220V,50Hz,1Ph
Holding sample tube attachment:
27-WF1738 Attachment for sampling tube or cylindrical container
27-WF1731: 12.7 mm x 12.7 mm vane
27-WF1735/A: Set of kgf calibrated springs for laboratory vane apparatus
How it works:
The laboratory Vane Apparatus derives from an original design by the UK based Transport Research Laboratory. The vane is held in a rotating socket situated in the lower part of the vane head assembly. This socket rotates in a ball seating.
Four calibrated springs are supplied, each with a deflection/load chart.
If the vane is prevented from rotating and the hand knob is turned clockwise, the circular graduated scale rotates, and a torque is applied to the springs. The load applied can be determined by noting the angular deflection from the graduate scale and by reading the relevant spring calibration chart.
If the vane is permitted to rotate, the amount of vane deflation can be seen on the secondary scale.