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Triaxial testing simulates the stress conditions that soils experience in the real world. Utilizing specialized triaxial test equipment, this method applies confining pressure and controlled axial loading on soil specimens to provide valuable data on soil shear strength, cohesion, and stability. The test is widely used to predict slope stability and determine the behavior of soil in foundation systems under varying load conditions.
Triaxial tests are conducted following specific methods:
Unconsolidated-Undrained (UU): According to ASTM D2850, this method tests the soil's response without drainage, ideal for short-term analysis.
Consolidated-Undrained (CU): In accordance with ASTM D4767, this method allows for consolidation under stress but prevents drainage, simulating medium-term conditions.
Consolidated-Drained (CD): As per ASTM D7181, the test allows for both consolidation and drainage, representing long-term conditions, such as those found in permanent structures.
Below, we explain some of the key components that are part of this triaxial testing system:
• Load Cells: These sensors measure the load applied to the soil specimen. The S Type load cell (5 kN) is designed for general use, while the Pancake Type load cell (10 kN) is optimized for high precision.
• Triaxial Cells : These cells encase the soil specimen, allowing for the application of confining pressure and facilitating the shear testing process.
• Pressure Transducer Block: This component is responsible for monitoring the pressure applied within the triaxial cells, ensuring accurate readings during testing.
• Oil and Water Constant Pressure System: This system maintains a stable pressure environment for the soil specimens, which is crucial for consistent test results.
• Automatic Volume Change Unit: This unit automatically measures the volume changes of the soil specimen during testing, providing insights into its behavior under load.
• Data Acquisition Interface Unit: This device collects and processes data from various sensors, allowing for real-time analysis and monitoring of the testing conditions.
• Triaxial Testing Software: These software packages facilitate the execution and analysis of triaxial tests, ensuring compliance with industry standards and enabling detailed reporting.
• De-Airing Water Tank: This tank is used to prepare and maintain the water used in the testing process, ensuring that it is free from air bubbles that could affect results.
• Plastic Hose : This hose is used to connect various components of the system, allowing for the transfer of fluids necessary for maintaining pressure during tests.
Together, these components create a comprehensive triaxial testing system that allows for thorough analysis of soil properties, supporting informed decisions in engineering and construction projects.
| Product Code | Description | UU | UU-CU-CD |
|---|---|---|---|
| UTM-0108.SMPR | Multiplex Universal Electromechanic Test Machine* | 1 | 1 |
| UTGM-1180 | Load Cell 5 kN, S Type | 1 | 1 |
| UTGM-1190 | Load Cell 10 kN, Pancake Type** | 1 | 1 |
| UTS-2400 | Triaxial Cell*** | 1 | 1 |
| UTS-2401 | Triaxial Cell*** | 1 | 1 |
| UTS-2406 | Block with one connection line and pressure transducer | 1 | 3 |
| UTS-2408 | Oil and Water Constant Pressure System | 1 | 2 |
| UTS-2415 | Automatic Volume Change Unit | - | 1 |
| UTCU-0020 | Interface Unit with 4 Channel for Data Acquisition | - | 1 |
| USOFT-2419 | Software to Perform UU Triaxial Tests | 1 | 1 |
| USOFT-2420 | Software to Perform CU-CD Triaxial Tests | - | 1 |
| UTS-1330 | De-Airing Water Tank, 7 L. | 1 | 1 |
| UTGP-1145 | Plastic Hose, Ø8mm OD, 10 m | 1 | 1 |
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