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Home > Soil Lab Test > OEM Automatic soil direct shear test apparatus Soil Direct Shear Apparatus Soil Direct Shear Tester Manufacturers, Supplier
OEM Automatic soil direct shear test apparatus Soil Direct Shear Apparatus Soil Direct Shear Tester Manufacturers, Supplier
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OEM Automatic soil direct shear test apparatus Soil Direct Shear Apparatus Soil Direct Shear Tester Manufacturers, Supplier

OEM Automatic soil direct shear test apparatus Soil Direct Shear Apparatus Soil Direct Shear Tester Manufacturers, Supplier

This direct shear tester is used to determine the shear strength of soil. Typically, a single specimen is subjected to shear force under different vertical pressures to determine the shear stress at failure. The shear strength coefficient, internal friction angle, and cohesion are then determined using Coulomb's law. The strain-controlled direct shear tester is a standard device for determining shear strength in geotechnical testing.

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Product Description

1

Equipment Composition

The Soil direct shear apparatus consists of a main unit for the direct shear test, a pressure control system, a direct shear data acquisition controller, an air pump, and host computer software.
● Main Structure: The shearing container consists of upper and lower shear boxes. Constant-velocity shear displacement (strain-controlled) is achieved by pushing the lower box.
● Vertical Pressurization: Lever-type loading (lever ratio 1:12) is used, applying different vertical pressures (e.g., 1.275 kg, 2.55 kg weights) using weights.
● Horizontal Shear Force: Measured via a push rod and force ring. In strain-controlled systems, the lower box is moved at a constant speed by a motor.
● Auxiliary Systems: Includes a pressure control system, a data acquisition controller (0.0002 mm accuracy displacement sensor), and an air pump.
The direct shear controller displays the maximum vertical pressure, shear force, and displacement. The software runs on a Windows operating system and enables automatic data extraction, storage, printing, and export.
Soil Direct Shear Apparatus Composition
2

Technical Parameters

1. Vertical Loading: 0～10KN; Accuracy: 0.005%
2. Pressurization Method: Cylinder pressurization in stages.
3. Shear Force: Standard 0～5KN (±10N); Selectable up to 30KN.
4. Specimen Size: Standard Φ61.8×20mm; Optional Φ100mm.
5. Displacement Stroke: 30mm; Accuracy: 0.01mm
6. Shear Speed: 0～5mm/min (arbitrarily set).
Technical Specifications Display
3

Application Areas

Widely used in civil engineering and geological engineering to determine the shear strength of:
  • Cohesive soil
  • Sandy soil
  • Gravelly soil
  • Composite foundations (e.g., gravel piles and mixing piles)

Frequently Asked Questions

What soil types can be tested with this apparatus?
The equipment is designed for testing cohesive soil, sandy soil, gravelly soil, and composite foundations such as gravel or mixing piles.
What is the maximum vertical loading capacity?
The standard vertical loading range is 0 to 10KN with a high accuracy of 0.005%.
What specimen sizes are compatible with the machine?
The standard configuration supports Φ61.8×20mm specimens, while Φ100mm and other sizes are available as options.
How is the data collected and managed?
Data is collected automatically through a high-precision data acquisition controller and managed via Windows-based software for storage and export.
Can the shear speed be adjusted?
Yes, the shear speed can be arbitrarily set within the range of 0 to 5mm/min to suit different testing requirements.
What is the displacement accuracy of the system?
The system provides an ultimate displacement stroke of 30mm with an accuracy of 0.01mm for precise measurements.

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