STANDARDS : EN 12390-3, 12390-4; BS 1881, ASTM C39 ♦
GENERAL SPECIFICATIONS
The LIYA Automatic range of 2000 kN and 3000 kN capacity compression testing machines have been designed for reliable and consistent testing of a wide range of specimens.
Machines confirms all EN, ASTM and BS standards written above. These also meet the requirements of CE norms for the safety and health of the operator.
Testing machines are supplied with EN compression platens as standard. Machines also comply with the ASTM C39 standard when used together with suitable platens.
Tests can be performed by either Digital Readout Unit or on a computer with using free Software.
The Automatic Compression Testing Machines allow inexperienced operators to perform the tests. Once the machine has been switched on and the specimen is positioned and centered
by the help of centering apparatus. The only required operations are;
· Setting test parameters, including pace rate (only required when the specimen type is changed).
· Pressing the START button on the control unit
· The machine automatically starts the rapid approach, when the specimen touches the upper platen the rapid approach is ended and starts loading at the pace rate that selected
by user and stops once the specimen fails.
The EN Automatic Concrete Compression Testing Machines consist of;
Load Frame,
Automatic Hydraulic Power Pack,
Digital data acquisition & control system,
Distance Pieces, Ø 205x25 mm, Ø 205x50 mm and
Ø 205x80 mm,
Upper Platen (with ball seating assembly) Ø300 mm,
Lower Platen Ø300 mm,
Loading Cylinder Assembly & Limit Switch for safety,
Front and Rear Protective Doors for safety.
The ASTM Automatic Concrete Compression Testing Machines consist of;
Load Frame,
Automatic Hydraulic Power Pack,
Digital data acquisition & control system,
Distance Pieces, Ø 165x80 mm, Ø 165x50 mm and 2 pcs.
Ø 165x25 mm,
Upper Platen (with ball seating assembly) Ø165 mm,
Lower Platen Ø165 mm,
Loading Cylinder Assembly & Limit Switch for safety,
Front and Rear Protective Doors for safety.
Concrete Compression Load Frame
Capacities of 2000 kN and 3000 kN Load Frames are most popular and available models for welded type frames.
The load frame provides the stability needed for accurate and repeatable test results over the years of operation.
Upper Platens/Lower Platens
Upper Platen (with ball seating assembly) Ø 30 x 5 cm and Lower Platen Ø 30 cm x 5 cm.
The platens enable the testing of a wide variety of cylinder, cube blocks or similar samples.
*Manufactured from high quality steel, which is then hardened, smoothed and finished.
*The roughness value for the surface texture of the auxiliary platens is ≤ 3.2 μm.
*Upper Platen (with ball seating assembly) and Lower Platen have centering rings on the lower platens for proper centering of samples.
Block Platens with Sliding Rail Assembly
STANDARDS: EN 772-1, 12390-4
Block Platens with Sliding Rail Assembly are installed on the compression testing machines for testing concrete blocks and other structural materials. The Sliding Rail Assembly allows
the platens to be easily installed without removing the existing Ø 300 mm compression platens. This assembly should be factory installed.
It should be noted that after installing, the vertical clearance between the platens decreases by 50 mm.
Block Platens Lifting Assembly is used for easy removal of the lower platen of Block Platens and easy replacement of the distance pieces between the piston and the lower platen.
HYDRAULIC POWER PACK AND DIGITAL DATA ACQUISITION & CONTROL SYSTEM
Hydraulic Power Pack
Automatic Hydraulic Power Pack, dual stage, controlled by digital readout unit is designed to supply the required oil to the load frames for loading.
Controller unit has a simple and compact configuration. The Hydraulic Power Pack, Control and Read out Units are positioned on the right hand side of the load frame for
easier accessibility, increased productivity and for safer operations.
Very silent power pack can load the specimen between 1 kN/sec. to 20 kN/sec, with an accuracy of ±5%. A Rapid approach pump is supplied as standard. Safety valve
(maximum pressure valve) is used to avoid machine overloading.
Maximum working pressure of the system is 410 bar.
Dual Stage Pump
The dual stage pump is formed by two groups;
1. Low pressure gear pump
2. High pressure radial piston pump
On the dual stage pump, a high delivery, low pressure gear pump is used for rapid approach, while a low delivery, high pressure radial piston pump is used for test execution. The rapid approach facility shortens the time interval from piston start until the upper platen touches to the specimen. This excellent feature helps to save a lot of time when a large number of specimens are going to be tested.
Main Features
*Pace rate control from 1 kN/sec to 20 kN/sec depending on piston size.
*Can control 2 frames (optional)
*Can make test with load control.
*Real time display of test graph.
*Analog channels for different frame load cells
*RS-232 serial port connecting for computer interface
*LCD display
*2 different unit system selection; kN and kgf
*Multi-language support (English and Turkish)
*2 different unit system selection; SI and Metric
*Real-time clock and date
*Free of charge PC software for the test control and printout the test report.
