Advanced Soil Systems
| Code | LoadTrac II, FlowTrac II |
| Standards |
|
Description:
- The Load Trac-II/FlowTrac-II system fully auto mates the performance of a Controlled Strain Loading Consolidation (CSL) test. Once a soil sample is in place, and the test conditions selected, the LoadTrac-II/ FlowTrac-II system will run the entire CRCS test from start to finish.
- The LoadTrac II/ FlowTrac-II system consolidates the sample through a loading path specified by the user using constant rate of strain loading.
- To avoid running the test too fast (excess pore pressures become too large for the transducer) or too slow (the test takes too long), LoadTrac II/FlowTrac-II uses Excess Pore Pressure Ratio Limits.
- If the measured excess pore pressure divided by the current total vertical stress exceeds the Upper Pore Pressure Ratio Limit, the current strain rate is automatically decreased by a factor of 2.
- If the measured excess pore pressure divided by the current total vertical stress falls below the Lower Pore Pressure Ratio Limit, the current strain rate is increased by a factor of 2.
- These limits give the user a great deal of control over how a constant strain rate test is run.
- The FlowTrac II is used during back pressure saturation as well as maintaining a constant cell pressure during the consolidation phase of the test.
- A typical consolidation test can be completed in 24 to 36 hrs. on most materials.
Applicable Test Standards:
- ASTM D-4186 One-Dimensional Consolidation
- Properties of Soils Using Controlled – Strain Loading
User Benefits:
- Choose capacity to fit user needs from 22, 45 and 90 kN (5,000, 10,000 and 20,000 lbs.) models
- Total automation of data collection and reporting of test results
- Prepare tables and plots of report quality within minutes of completing a test
- Generate columns of data for easy reduction using your own spreadsheet software
- Ability to access and control the unit over a computer network using Geo-Net option
Technical Specifications:
| Motor | Stepper motor with built-in controls |
| Travel | Built-in displacement transducer with 76 mm (3 in.) range and 0.0013 mm (0.00005 in) resolution |
| Displacement | Control from 0.00003 to 15 mm per minute (0.000001 to 0.6 in. per minute) |
| Flow Range | 0.000006 to 3 cc per second |
| Power | 110/220 V, 50/60 Hz, 1phase |
Models:
| FlowTrac II Models | |
| FTII-250-nn | 250 cc capacity |
| FTII-750-nn | 750 cc capacity |
| LoadTrac II Models | |
| LTII-5,000 | 22 kN (5,000 lbs.) frame capacity |
| LTII-10,000 | 45 kN (10,000 lbs.) frame capacity |
| LTII-20,000 | 90 kN (20,000 lbs.) frame capacity |
| LTII-50,000 | 222 kN (50,000 lbs.) frame capacity |
| Dimensions | Weight (approx.) | |
| LoadTrac II | 464 x 546 x1206 mm
(18 x 21.5 x 47.5 in.) |
55 kg |
| FlowTrac II | 203 x 406 x 470 mm
(8 x 16 x 18.5 in.) |
14 kg |
Accessories:
| 1230 | All stainless-steel consolidation cell with backpressure saturation capability, 62.5mm (2.5 in.) sample diameter standard. External stainless-steel pressure sensor. Other sample sizes are available upon request |
Due to the continuous development of our products, the goods supplied may vary in detail to that illustrated on this Website.
