Fully Automatic Direct Shear
STANDART: ASTM D3080; BS 1377:7; AASHTO T236, CEN-ISO/TS 17892-10
LT-S1260 Fully Automatic Direct Shear | 100 kN
LT-S1265 Shear Box Assembly | 300x300mm with Specimen Cutter and Extruder
LT-S0265/1 Shear Box | 300x300mm For the sample
LT-S0265/2 Loading Pad | 300x300mm For the sample
LT-S0265/3 Grooved Base Plate | 300x300mm For the sample
LT-S0265/4 Porous Stone | 300x300mm For the sample
LT-S0265/5 Plain Grid Plate | 300x300mm For the sample
LT-S0265/6 Perforated Grid Plate | 300x300mm For the sample
LT-S0265/7 Specimen Cutter | 300x300mm For the sample
LT-S0265/8 Specimen Extruder | 300x300mm For the sample
100 kN Fully Automatic Direct Shear / Consolidation Test Machine is designed to determine the consolidated drained shear strength of large soil and rock specimens under controlled normal load and horizontal displacement. The system automatically manages the consolidation and shearing stages, while digital sensors continuously record shear force, vertical displacement and horizontal displacement. Its 100 kN capacity, servo-controlled loading system and computer software support advanced testing of large-size specimens.
- 100 kN System Capacity: Suitable for high-strength soil and rock specimens.
- Fully Automatic Testing: Controls consolidation and direct shear stages automatically.
- Large Specimen Support: Designed for suitable large-size shear box configurations.
- 300 × 300 mm Shear Box: Available for large square soil specimens.
- Automatic Normal Loading: Servo-controlled system applies the required vertical load.
- Precise Speed Control: Shear rate can be adjusted over a wide operating range.
- Digital Data Acquisition: Records shear force and specimen displacement continuously.
- Real-Time Monitoring: Displays load, stress and displacement data during testing.
- Peak and Residual Strength: Software records both peak and residual shear values.
- Automatic Calculations: Supports determination of cohesion (c) and internal friction angle (φ).
- Computer Software: Test results can be stored, reviewed, reported and exported.
- Product Code: LT-S1260.
- Power Supply: 220 V, 50–60 Hz, 1 ph.
| Product Code | Product Name | Dimensions (cm) | Weight (kg) | Speed Range (mm/min) | Max. Shear Force | Power Supply |
| LT-S1260 | 100 kN Fully Automatic Direct Shear / Consolidation Test Machine | 165 × 155 × 135 | 470 | 0.0001–9.9999 | 100 kN | 220 V, 50–60 Hz, 1 ph |
| LT-S0265 | Shear Box Assembly | — | — | — | — | — |
LT_KAYA_DİREKTKESME_
100 kN Direct Shear Test Machine for Large Specimens
The 100 kN Direct Shear Test Machine is designed to determine the consolidated drained shear strength of large soil and rock specimens. The machine applies controlled normal stress to the specimen and then moves the shear box horizontally at a selected rate.
During testing, the system records shear force, horizontal displacement and vertical displacement. This allows laboratories to evaluate the behaviour of the specimen throughout consolidation and shearing.
Fully Automatic Consolidation and Shear Control
The normal load is applied through an automatic servo-controlled consolidation system. The operator enters the required test parameters before starting the procedure.
The machine first completes the consolidation stage. It then begins the direct shear stage automatically. This sequence reduces manual intervention and helps create more consistent conditions between different specimens.
The system can stop according to the selected test condition, such as specimen failure or a predetermined horizontal displacement.
Precise Shear Rate Control
The machine provides a wide adjustable shear-speed range. This allows the operator to select a suitable displacement rate according to soil permeability, specimen type and the selected test procedure.
For consolidated drained testing, the shear rate must be slow enough to allow excess pore-water pressure to dissipate. ASTM D3080/D3080M specifically requires drained conditions during shearing.
Digital Measurement and Real-Time Graphs
Digital sensors continuously monitor shear force, vertical movement and horizontal displacement.
The control system displays test values and graphs in real time. Users can therefore follow shear stress and displacement behaviour throughout the test.
The software also stores peak and residual shear values. Test information can be saved for later analysis and reporting.
Cohesion and Internal Friction Angle
A single test provides the shear resistance under one selected normal stress. To determine soil shear-strength parameters, several similar specimens are tested under different normal stresses.
Both ASTM D3080/D3080M and ISO 17892-10 indicate that three or more tests at different normal pressures are generally used when determining shear-strength parameters.
The software can use the resulting normal stress and peak shear stress values to determine cohesion (c) and the internal friction angle (φ).
Large Soil and Rock Specimen Testing
The large-capacity system is intended for specimens that exceed the dimensions handled by conventional small direct shear machines. Suitable shear box assemblies allow testing of large soil specimens and appropriate rock configurations.
As a result, the 100 kN Direct Shear Test Machine combines high load capacity, automatic consolidation, precise displacement control and digital analysis in one advanced laboratory system.
