ACE – Automatic Computerized Oedometer
Soil Mechanics Testing Equipment
Standards
AASHTO T216, ASTM D2435, ASTM D3877, ASTM D4546, BS 1377:5, 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 |
Related Products
Moisture Determination Balance - GenMoist
GenMoist is designed to automatically and simultaneously dry and weight a solid sample for the determination of moisture content. The machine provides a continuous direct readout for both the weight and the percentage moisture loss through the entire cycle. It has a build-in timer.
MULTISPEED digital automatic universal tester for displacement controlled tests
The new MULTISPEED tester is the ideal solution for Road testing laboratory. The 50 kN capacity and the fully variable test speed of 0.2 to 51 mm/min make it possible to perform not only the CBR and Marshall tests, but many other applications as for instance Indirect Tensile test, Quick Triaxial tests, Unconfined and Uniaxial soil testing and, in general, all test to be performed under displacement control. The machine can be equipped with analogical or digital load/displacement measurement systems as well as with the specific accessories, to suit either the field or central laboratory requirement.
Dynamic Triaxial Systems 1000 kPa
Dynatriax systems are ideal for commercial and research laboratories for the following applications: Liquefaction potential, Strength degradation due to cyclic loading, Shear modulus and damping ratio, resilient modulus, Effects of blasting in mines and quarries, Effect of ocean waves on costal and off shore structures.
Automatic Triaxial Test Systems
The AUTOTRIAX Automatic triaxial system not only can perform Effective Stress triaxial tests with all the above vantages but is the unique and indispensable apparatus to perform the Stress Path test.
NG-Oedometer - Front Loading Oedometers - Consolidation Test
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.
Shearmatic 300 - Large Shear Testing Machine
The SHEARMATIC 300 automatic machine is ideal for testing geosyntetics and also soil and other materials that contain large particles of up to 20 mm largest dimension. Sample size up to 300 mm square can be tested, with inserts allowing the testing of smaller sample sizes. See accessories.
Resonant Column and Torsional Shear Tester
RESONANT COLUMN combines the features of both resonant column and torsional shear into a single unit including the current driven motor to apply torsional load to sample, a series of transducers with signal conditioning, a cell and back pressure electro-pneumatic control system and a data logger.
Automatic Shear Testing Machine
The microprocessor control system, therefore, allows the machine to work as an automatic stand-alone unit: the test measurements (force and displacements) a re directly displayed and stored in memory according to pre-set recording modes. The PC is only temporary required to download the test data via the RS 232 port once the test is completed. The data can be processed by the Direct and residual shear Geo-Analysis templates. See accessories.
Shearmatic - Automatic Shear Testing Machine
This microprocessor based advanced model, is a stand-alone machine, driven by a high-resolution stepper motor with epicyclical reduction gear with reduced backlash. Incorporate a pneumatic closed loop system for the automatic application of the axial pressure by a high performance pressure regulator, with the main advantage of eliminating the manual loading of the dead weights. Excellent and high resistance techno-polymeric material has been adopted for the carriage of the shear box. It offers excellent resistance to corrosion, wear and tear and is resistant to all chemicals found in a soil specimen. The carriage is lightweight and easy to clean.
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.