COLD CRUSHING STRENGTH APPARATUS - IS 1528 (PART IV)-

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PRINCIPLE

A test piece of known dimensions is subjected, under specified conditions, to a steadily increasing compressive load until it fails, that is when it cannot support a further increase in load. The cold compressive strength is calculated from the maximum load indicated at failure and the mean cross-sectional area over which the load is applied.

Compliance With Following International Standards:

EN 12390‑4, ASTM C39, AASHTO T22, IS : 14858 (2000), IS:1528(Part 4)

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:

Press the start button
Tighten the pressure valve
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
Release the pressure valve
The test execution conforming to Standards can be easily proved.
Working on 240V, 50‑60Hz, single phase.
Dual stage pump assuring fast piston approach and precise test execution
Test execution conforming to EN 12390‑4, ASTM C39, AASHTO T22, IS:1528(Part 4)
Controllable pace rate from 1 KN/Sec to 10 KN/Sec.
Auto stop after completion of each test.
Soft platen‑to‑specimen contact and smooth load rate control from the very beginning of the ramp.

Frame:

Four column high stiffness welded frame tested for stability.
Heavy duty spherical seat , allowing initial free alignment at the initial contact with the specimen and automatic jamming up to the end of test.
Surface hardness of platen is 55 HRC, flatness tolerance 0.03 mm. Traceable certificate of surface hardness available on request.
Piston travel limit switch (Extra cost)
Emergency stop button

Salient fetchers of data manager PC software (Optional At Extra Cost.)

Two way communication i.e machine operates from computer and from the touch screen controller both (Stat, stop, save data and save graph)
Results directly saved in excel file
Graph also saved in excel file
Capable to save customer name, other details of cutomer, ageing of cube moulds, identification mark of the cube mould, date and time of testing
Capable to print direct report from the computer
Capable to select different test perameters like pace rate, sample size and area from the computer (software)

NOTE: It is essential to use the machine with 3 KVA servo stabilizer.