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| Warranty: | 1year |
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A method of measuring the shear strength of soil, which usually uses 3-4 cylindrical samples to apply pressure at different constant surrounding pressures (ie, the small principal stress σ3), (ie, the stress difference (σ1-σ3)) Carry out shearing until failure, and then obtain shear strength parameters, triaxial creep, triaxial penetration, lateral pressure coefficient, unconfined compressive strength test, and strain-controlled loading consolidation test according to Mohr-Coulomb theory.
Measure the total shear strength parameters and effective shear strength parameters of fine-grained soil and sandy soil, and divide them into unconsolidated undrained shear (UU), consolidated undrained shear (CU or UU), and Consolidation drainage shear (CD) and other 3 kinds of tests (pore water pressure dissipation test), (multi-stage loading triaxial compression of a sample).
The pressure chamber is divided into built-in or external sensor options (built-in sensors reduce friction and are not affected by confining pressure)
Optional functions: 1. Machine tool coefficient, automatically control the surrounding pressure during the shearing process, and also obtain the initial tangent modulus and secant modulus of any segment within the strain range. 2. The shear modulus keeps (σ1+2σ3)/3 constant during the shearing process of the test. 3. Elastic modulus, automatic control of axial repeated loading and unloading, control error ± 1KPa, adopting real-time cycle control technology, automatically correcting axial deformation error during pressurization and decompression conversion process. 4. It can also be used for various special tests such as flow penetration test.
The unconsolidated undrained (UU) test does not allow the sample to drain during the application of ambient pressure and increasing axial pressure until failure.
Consolidation undrained (CU or UU) is to make the sample drained and consolidated under a certain surrounding pressure first, and then increase the axial pressure until it fails while keeping it undrained.
Consolidation drainage (CD) is to make the sample drain and consolidate under a certain surrounding pressure, and then increase the axial pressure until the sample is allowed to fully drain until it fails.
Pore water pressure dissipation coefficient, dissipation percentage and pore pressure coefficient (applicable to undisturbed clayey soil with saturation greater than 85% and moisture content greater than . clayey soil).
The important components of the stress-strain triaxial instrument: controller, software, sensor, confining pressure system, back pressure system, pore pressure system and host accessories.
| Axial ultimate load | 10kN, 20kN, 30kN, 60kN, 100kN (optional) force sensor computer control display |
| Axial deformation | 0-20mm±0.01mm displacement sensor computer control display |
| Strain speed | 0.001~4.5mm/min stepless speed regulation |
| Stress rate | 10N~30KN/S can be adjusted arbitrarily |
| The constant force can be set according to the needs; the emergency stop can be set. | |
| Ambient pressure | 0~2MPa±0.1kPa LCD display computer control |
| Back pressure, pore pressure, saturation pressure | 0-2MPa±0.1kPa LCD display computer control |
| Consolidation drainage, shear drainage (volume change) accuracy 0.1ml, liquid crystal display computer control (water inflow can be measured; drainage can be collected and recorded in real time and the relationship between time and drainage can be drawn in graphs) | |
| Pressure chamber | φ61.8 φ39.1 φ101 optional |
| Lifting stroke | 0-60mm |
| Windows acquisition and processing software, support network, compatible with existing computer systems, easy to use, .. upgrade, no additional data acquisition system is needed for the whole machine, fully automatic computer control, software acquisition, data processing, and export data and graphics. | |
| Liquid crystal display, keyboard input, display shaft pressure, shaft deformation, confining pressure, back pressure, pore pressure, volume change, speed, real-time clock and calendar display, etc. | |
| The three-axis main engine adopts a steel frame structure, adopts a high-end motor for full-range stepless speed regulation, and has upper and lower axial protection, and automatically stops. | |
| Features | Confining pressure and back pressure control adopts "precision digital piston" to form a hydraulic system. Not only can confining pressure and back pressure be applied, but also volume change and drainage can be measured. , there is no need for measuring tubes and volume change tubes, no drainage and volume change sensors, no manual reading operation, the pipeline adopts quick connectors, the container is automatically filled with water, the drainage device is easy to operate, and can generate constant pressure, etc., and cycle pressure as required And volume change, linear change with time and other output. |
1. Warranty 1 year of replacement and return.
2. Providing factory visit and study, technical training.
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