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COMPRESSION TESTING MACHINE - ELECTRICALLY OPERATED 

Introduction:

This test is used to determine the compressive strength of a concrete cube, which has usually been made from fresh concrete cast in a standard test mould. The value of compressive strength can then be used to assess whether the batch that the concrete cube represents meets the required compressive strength. Following cube manufacture and curing, which should both be closely controlled, the cube is crushed at a stated constant speed until it can sustain no further increase in load. The strength is then derived by calculation using the maximum load and cube dimensions.

The machine embodies an hydraulic system designed to meet the requirements of Indian standards Specification 516-1959 for compression tests on concrete cubes up to 20 cm X 20 cm X 20 cm. and also concrete cylinders up to 30 cm height. Using special platens and fixture, Brick testing and flexural testing can also be carried out on the same machine.


General Description & Specification:

The hydraulic jack of rated capacity is fixed to the base. The upper platen has got a self-aligning action and is attached to a screw, which passed through the crosshead plate, and can be raised or lowered for initial clearance adjustment. The lower platen rests on the jack ram and is positioned with the help of a centering pin. Loading is accomplished by upward movement of lower platen. A dust cover is provided on the jack to prevent any dust from going into the cylinder. A spacer with a centering locating pin is provided to test small specimens. The lower and upper platens of the machine are hardened ground and polished. Guidelines are marked on the lower platen to keep the specimen coaxial with the hydraulic jack.


Optional Accessories:

Spare Oil Seal

Brick Testing Attachment

This test measures the compressive strength of bricks to be used in construction for load bearing walls. Specimens are first sampled from batches in a standard manner. The bearing faces are then either made perfectly flat by capping with sulphur or soft wooden spacers are used to take up surface defects, this will avoid any point loading. If frogs are present (indentations in the face) then these are filled with standard mortar. The maximum load sustained by the bricks before failure is then measured and the compressive strength calculated.

Flexural Test Attachment

The test method essentially involves applying a load at the centre of a beam of concrete supported at its ends. The load required to break the specimen is then recorded.

Cube moulds of various sizes

Accelerated curing tank

Hydraulic oil (TIIN of 5 liters)


+ 91 9212189333
M-11, Street No:-10, Anand Parvat Indls. Area,
New Rohtak Road, New Delhi-110005