ASTM D5321 Geosynthetic Interface Shear Tester
Whats/App: +86 156 1874 6768
Web: standard-groups.com
Specification
For direct shear test, adopt detachable drive unit, which can be moved from one shear box to another, allowing the testing of one sample while another sample is being prepared in a separate box.
For pullout test, the box is removable of a constant rate controlled by the servo motor; it is as same as moving box in direct shear test.
The direct shear test machine consists of servo motor, load cell, control panel, transducer, readouts for the sensors, etc.
The drive system is mounted on a wheeled frame to allow for easy separation from the sample box.
The box has low friction linear bearings when moving.
Digital readout for each test and can be connected to PC for data analysis.
Application
The geosynthetic materials direct shear and pull-out friction testing system is primarily used to test the pull-out friction resistance between geosynthetic materials (such as geotextiles, geomembranes, geogrids, etc.) and the surrounding soil, as well as the friction characteristics of these materials under direct shear conditions.
Material performance evaluation: It tests the friction and pull-out performance of geosynthetic materials under specific conditions to evaluate their stability and durability in practical applications.
Engineering material selection: It allows for the comparison of the friction and pull-out performance of different geosynthetic materials to select the most suitable material for engineering needs.
New material development: In the development of new geosynthetic materials, this system can serve as an important tool for performance evaluation, helping researchers optimize material formulations and processes.
Standard
Direct shear test:
IS0 12957.1:Geosynthetics - Determination of friction characteristics - Part 1: Direct shear test
GB/T 17635.1-1998:Geotextiles and geotextile-related products - Determination of friction characteristics - Part 1: Direct shear test
JTG E50 T1129:Test method for direct shear friction of geosynthetics in highway engineering (corresponding to JTG E50 T1129)
SL/T 235:Specification for test and measurement of geosynthetics
ASTMD 5321:Standard Test Method for Determining the Coefficient of Soil and Geosynthetic or Geosynthetic and Geosynthetic Friction by the Direct Shear Method
Pull test :
JTG E50 T1130:Test method for pull-out resistance of geosynthetics in highway engineering (corresponding to JTG E50 T1130)
Parameters
| Description | Details |
|---|---|
| Shear box sizes | 300 x 300 x 200mm; 600 x 600 x 300mm; 600 x 600 x 300mm Under the shear box: 300 x 300 x 200mm; 800 x 600 x 300mm; 800 x 600 x 300mm |
| Drawing box sizes | 300 x 300 x 340mm; 600 x 400 x 500mm; 600 x 400 x 500mm |
| Loading mode | Servo cylinder loading; Hydraulic loading; Hydraulic loading |
| Normal pressure | 0 - 250kPa; 50 - 300kPa (customizable) |
| Static load | 50 - 400kPa |
| Dynamic load | 50 - 300kPa |
| Horizontal drive mode | Servo cylinder; Servo motor; Hydraulic drive |
| Maximum horizontal force | 30kN; 50kN; 100kN |
| Horizontal load accuracy | 0.50% |
| Straight shear drawing speed | 0.1 - 10mm/min; 0.1 - 10mm/min; 0.3 - 10mm/min |
| Direct shear displacement | 0 - 100mm |
| Drawing displacement | 0 - 150mm |
| Displacement resolution | 0.01mm |
| Return speed | 1 - 50mm/min |
| Power supply | AC220V 50Hz |
| Overall dimensions | 2400 * 700 * 2000mm; 2900 * 850 * 3400mm; 1500 * 900 * 1800mm |
Accessoriess
Shear box
Vertical loading device
Horizontal loading device
Tensile and compressive force sensor
Displacement sensor, etc.
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