Shear Test Apparatus
Strain controlled direct shear apparatus is used to determine the shear strength. Shear strength is applied at different vertical pressures and thus shear is performed to obtain shear strength values. The strength parameters are determined according to the Coulomb force principle and the cohesion from inside friction angle.
Main vertical load | 400kPa |
Pressure grade | 50kPa, 100 kPa, 200 kPa, 300 kPa, 400 kPa; |
Respective counterweight weight | 1.275 kPa, 2.55 kPa, 5.1 kPa, 7.65 kPa, 10.2 kPa |
Lever ratio | 1:12 |
Specimen area | 30cm2, height is 2 cm |
Max. horizontal shear force | 1.2KN |
Power type | Electric Power |
Respective shear speed | 0.02mm/min, 0.8 mm/min, 2.4 mm/min |
Power supply | 220V 50/60HZ |
Net weight | 40Kg |
This machine performs consolidation & shearing operations that are normally carried out by a standard direct shear & residual shear test at an auto-controlled speed. It uses a micro-stepper motor, allowing the system to apply a horizontal shearing loading to the soil specimen at a specific shear rate.
The shear force readings are obtained from the proving ring at specified intervals of the horizontal displacement shown on the touch screen display.
This equipment is also equipped with limit sensors to prevent the shearbox from over-traveling at forward or reverse motions. The control panel is equipped with an LCD screen and keyboard for manual setting and control. The large liquid crystal display and 16 key membrane allow for a reciprocating shear capability and adjustable time setting using a built-in 16-bit Data acquisition and control.
ITEM | Parts and Specifications | QTY |
1 | Shear Base Unit including: Computer controlled Shear frame, Max. Travel ranges: 30mm. Lever ration: 11:1, 10:1, 9:1. Digital control and display of speed. Reversible stepper. Motor for residual strength test. Infinitely variable speed drive from 0.00001 to 9.99999mm/min. Power supply: 220VAC / 110VAC (50HZ or 60HZ) | 1 |
2 | Shear Box Assembly(Material:SUS304 ) 60*60 and 100*100mm | 1 |
3 | One embedded controller for horizontal controls, including: One front panel LCD and Keypad for manual controls, 240*128 liquid crystal display and a 16 key membrane, reciprocating shear capability and times are settable Built-in 16 bit Data Acquisition and Control, two analog and two digital channels with signal conditioning and power supplies built-in. Micro-switch mechanism to prevent ram over travel. | 1 |
4 | Load Sensor Assembly: 5KN capacity, fitted with 4 pin DIN plug. | 1 |
5 | Vertical Displacement Transducer Assembly: 12.7mm travel, Accuracy:0.003mm, Resolution:0.001mm, with 4pin DIN plug, mounting pillar and bracket for shear box. | 1 |
6 | Horizontal Displacement Transducer Assembly: 25.4mm travel, Accuracy:0.003mm, Resolution:0.001mm, 4 pin DIN plug, mounting pillar and bracket for shear box. | 1 |
7 | Set of Weights: 50kg in total . | 1 |
8 | software in Windows : digital control of speed and data acquisition via control system. | 1 |
This ZJ quadruple Strain Controlled Direct Shear Apparatus(infinitively variable speeds)is a kind of strain controlled direct shear apparatus used to test resisting shear strength of soil specimen, it usually adopts four specimens under the different vertical pressure and to exert horizontal force to the specimens so as to obtain shearing stress while the specimen is destroyed. According to Coulomb's law to confirm the resisting shear strength coefficient, angle of internal friction and coagulable force of the soil.
Vertical load: | 400kPa max. |
Pressure grade: | 100kPa, 200kPa, 300kPa, 400kPa |
Lever ration: | 1 : 12 |
Shear box: | 4 |
Horizontal shear force: | 1.2kN |
Specimen size: | 30cm2 x 2cm (H) |
Speed ratio: | 2.4mm/min. 0.8mm/min. 0.1mm/min. 0.02mm/min. |
Power supply: | 220VAC 50Hz |
ZJ Light-duty Strain Controlled Direct Shear Apparatus is a kind of strain controlled direct shear apparatus used to test resisting shear strength of the soil specimen. It usually adopts four specimens under the different vertical shearing while the specimen is destroyed. According to Coulomb’s law to compress (400Kpa, 300Kpa, 200Kp, 100Kpa and 50Kpa can be selected), to exert horizontal force t o the specimens so as to obtain firm the resisting shear strength coefficient , angle of internal friction and coagulable force of the soil.
Specimen size: | 30cm2 x 2cm (H) |
Lever ration: | 1 : 20 |
Vertical load to be added: | 50kPa, 100kPa, 200kPa, 300kPa, 400kPa |
Horizontal load capacity: | 1.2kN max. |
Dimension: | 850 x 550 x 1100mm(L X W X H) |
Weight: | 40kg |
This ZJ Direct Shear Apparatus is a kind of strain controlled direct shear apparatus used to test resisting shear strength of soil specimen. It usually adopts four specimens under the different vertical pressure exerted on the specimens to obtain shear stress when the specimen is destroyed. According to Coulomb’s law to confirm the resisting shear strength coefficient, angle of internal friction and coagula force of the soil.
2 speed or 3 speed;
Vertical load: | 400kPa, 300kPa, 200kPa, 100kPa, 50kPa (selectable) |
Horizontal load: | 1.2kN |
Lever ratio: | 1 : 12 |
Specimen size: | 30cm² |
Power supply: | 220VAC 50Hz |