Large Shearmec is an electromechanical frame designed by Matest to perform direct and residual shear tests on samples with coarse or medium grain soils, such as gravel. The stainless steel shear box has a size of 300x300 mm, in order to accommodate the largest diameter of the grains and obtain shear strength values for the sample as a whole, not just for the single particles. The shear force and the vertical pressure are applied by 2 electromechanical actuators of 100 kN each, with a travel of 150 mm and 75mm respectively. Stresses are measured by 2 electronic load cells of 100 kN, one for the horizontal force and one for the vertical pressure. To facilitate the sample insertion and access to the test area, Matest has developed an innovative upper plate lifting system with self locking joint which guarantees the axiality of the load. The Cyber Plus Progress unit, based on a closed-lood control, manages the system completely and automatically, from data acquisition to real time graph display. The machine can be controlled even remotely through SmartLab, the innovative software platform which allows both data acquisition and processing and test results export. Large Shearmec can be configured to perform tests on geosynthetic materials as well.
Main Features
Load application system via electromechanical actuators
Configurable for both soil tests and geosynthetic materials
Maximum vertical load 110 kN
Maximum horizontal load 100 kN
Specimen insertion system facilitated via an upper tilting plate
Upper plate equipped with ball joint
Liquid collection containers on the work top
Test fully configurable from 7-inch display
Data storage on USB key
Smartlab software available for remote control of the machine with data and results management
Technical Specifications
- Sample size: shear box 300 x 300 x 150 mm
optional accessory: shear box 150 x 150 mm
- Vertical and horizontal loads: 110 kN
(100 kN horizontal and vertical load cells)
- Speed: from 0.00001 to 12.00000 mm/min
- Travel: 75 mm
- Consolidation steps: up to 50
- Control and data acquisition:
Cyber-Plus Progress 8 channels + PC software (optional)
- Drive: Electromechanical on both consolidation axes and direct / residual Shear
Accessories:
S279-20 Shear box 150x150 mm
S279-21 Pair of containment plates 150x150 mm
SSW-ShearA Software for shear test. For fully automatic data control, acquisition, processing and display of direct/residual shear tests, with graphics on all the test phases.
SSW-LinkA SmartLab mode enable for automatic machines.