TRIAXIAL TESTING MACHINE FOR ROCK

It consists of following:-

(A) Automatic Compression Testing Machine with Touch Panel, Capacity 2000kN

(B) Hoek Type Triaxial Cell (For NX size cores)

(C) High pressure controller, Pressure Range 0.5 - 50 Mpa in steps of 0.5 Mpa

Compliance With Following International Standards:

EN 12390-4, ASTM C39, AASHTO T22, IS : 14858 (2000)

Automatic Test Execution:

Once the machine has been switched on, the specimen positioned and centered, the only required operations are:

Set test parameters including load rate:

1. Press the start button
2. Tighten the pressure valve
3. The machine automatically: starts the rapid approach; switches to the test speed once the specimen comes into contact with the upper platen; automatically stops the motor upon specimen failure
4. Save the test including data results .
5. The test execution conforming to Standards can be easily proved.
6. Working on 240V, 50 60Hz, single phase.
7. Dual stage pump assuring fast piston approach and precise test execution
8. Test execution conforming to EN 12390 4, ASTM C39, AASHTO T22
9. Controllable pace rate from 0.1 KN/Sec to 10 KN/Sec.
10. Auto stop after completion of each test.
11. Soft platen to specimen contact and smooth load rate control from the very beginning of the ramp
12. Servo motor driven machine

Frame:

1. Four column high stiffness welded frame tested for stability.
2. Heavy duty spherical seat, allowing initial free alignment at the initial contact with the specimen and automatic jamming up to the end of test.
3. Surface hardness of platen is 55 HRC, flatness tolerance 0.03 mm. Traceable certificate of surface hardness available on request.
4. Piston travel limit switch (Extra cost)
5. Emergency stop button
6. Servo motor driven machine
7. Gives live online graph on the 7" touch screen
8. User friendly large graphical display
9. Displacement controlled machine also available (at extra cost)
10. Saves 100 results in the 7" touch screen
11. Inbuilt USB drive to save the data.

(B) Hoek Type Triaxial Cell (For NX size cores)

Pressure Range: 0-50 Mpa (0-500 bar)

1. Basic Cell of steel body.
2. Two nos. steel end caps.
3. Two nos. loading pistons.
4. Two nos. self sealing couplings, one for connecting to hydraulic pressure system and the other for deairing the cell chamber or attachment of pressure measuring device, if required.
5. Two Nos. sleeves made from special rubber, capable of withstanding high lateral pressure.

(C) High pressure controller

Pressure Range 0.5 - 50 Mpa in steps of 0.5 Mpa

The Controllers are designed to maintain confining pressure at the set value with the help digital indicator irrespective of any deformation that takes place during testing of the specimen. Close loop system is provided for automatic actuation of the main pumping unit depending upon the volume change in the specimen. All the electrical controls are easily accessible and are mounted on the front panel.

The unit operates on 220 volts, 1 phase, 50 Hz supply.