ACE – Automatic Computerized Oedometer
Soil Mechanics Testing Equipment
Standards
BS 1377:5, ASTM D2435, ASTM D3877, ASTM D4546, AASHTO T216, NF P94-090-1, NF P94-091, UNE 103-405, UNE 103-602
This test determines the rate and magnitude of consolidation of a soil specimen restrained laterally and subjected to a number of successive increments of vertical loads. In this automatic model, the incremental loading, in the load (stress) or swelling (strain) mode, is fully automatic for a practical and accurate test execution with more reliable test results. The ACE unit, the SHEARMATIC Automatic shear testing machine and AUTOTRIAX Automatic triaxial test systems, are the unique equipment for the complete automation of a CST (Consolidation, Shear, Triaxial) Soil Mechanics laboratory in the different configurations. See Automatic Soil Mechanics Laboratory.
The ACE, Automatic Computerized oedometer, consists of a small and compact load frame housing two coaxial pneumatic cylinders: the smallest one for low loads and the other for higher loads, with automatic switch off from one to the other when needed. The load is controlled by a high precision pneumatic servo-valve. Two analogue channels: one for the displacement transducer and the other for the load cell with closed loop feedback control. The test end can be programmed on a time or on a step bases. The software can control from a single PC, up to 60 ACE units enabling the operator to choose from single to multiple control.
Test parameters are previously specified by the operator and set in the ACE software. Test results are recorded and displayed in real time on the PC and calculation are performed automatically. The test data can be processed by one of the Geo-Analysis Templates conforming to the BS or ASTM Standards.
The frame can accept all standard consolidation cells: from 50.47 to 112.80 mm dia. Consolidation cells, Geo-Analysis templates and test software not included. See acc essories. PC not included.
Main Features
- PC controlled fully automatic test execution
- Pneumatic system for incremental consolidation and one-dimensional swell tests
- Performance of 24 hours 7 days tests without interruption and greater through output of tests with a considerable cost decrease
- To avoid the negative environmental discrepancies as operator errors, non-calibration etc.
- 15 kN max. capacity, 10 mm travel displacement transducer
- Real time data and graph display
- Single ACE software controlling up to 60 units
- Test management software supplied including calibration menu
- High speed LAN network communication
Specifications
| NG-ACE | |
|---|---|
| Maximum Vertical Load | 15 kN |
| Load Cell Cap | 15 kN |
| Displacement Transducer | 10 mm maximum travel |
| Maximum Air Pressure Supply | 10 bar. If the air pressure line is not available in the laboratory, our Air compress model NG-D2015, 50L capacity may be used |
| Sample Dimensions | From 50.47 to 112.8 mm diameter using our consolidation cells. See accessories |
| Software | Can control up to 60 ACE units (not included, see accessories) |
| PC Connection | LAN Connection to PC |
| Test Data Accuracy | ±1% |
| Overall Dimensions | 28 x 30 x 60 cm |
| Approximate Weight | 25 kg |
Consolidation Cells
To perform either standard or permeability testing:
| Model | Specimen Dia. x Height [mm] | Specimen Area [cm2] | Cell Dimension Dia. x Height [mm] | Weight [kg] | Calibration Disk |
|---|---|---|---|---|---|
| NG-WF0320 | 50.47 x 20 mm | 20 cm2 | 139 x 74 mm | 1.3 kg | NG-WF0320/9 |
| NG-WF0321 | 63.50 x 20 mm | 31.67 cm2 | 139 x 74 mm | 1.3 kg | NG-WF0321/9 |
| NG-WF0325 | 71.40 x 20 mm | 40 cm2 | 139 x 74 mm | 1.3 kg | NG-WF0325/9 |
| NG-WF0326 | 75 x 20 mm | 44.16 cm2 | 139 x 74 mm | 1.3 kg | NG-WF0326/9 |
| NG-WF0335 | 112.80 x 25 mm | 100 cm2 | 200 x 74 mm | 3 kg | NG-WF0335/9 |
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Laboratory Vane Apparatus
The laboratory vane apparatus is based on an original concept of the Transport and Road Research Laboratory of the United Kingdom. It can be provided with a wide range of vane sizes, although as standard, it is sold with the 12.7 mm square vane and a set of four calibrated springs. The test can be performed directly on the sample or in the sample contained in the sampling tube. In this case the NG-WF1736 Attachment for 38 and 100 mm dia. sampling tubes, should be used. See accessories.