AIM==>>
To determine the compressive strength of concrete cylinders.
APPARATUS==>>
Compression testing machine, cylinder mould of 150mm diameter and 300mm height, weighing balance.
PROCEDURE==>>
=>Cast the cylinder and cure for 28 days.
=>Takeout the specimen from the curing tank.
=>Wipe out the excess water from the surface of specimen.
=>Place the specimen vertically on the platform of compression testing machine.
=>Apply the load continuously and uniformly without shock at the rate of 315 kn/min. And continue the loading until the specimen fails.
=>Record the maximum load taken.
CALCULATIONS==>>
Range Calculation
Characteristic compressive strength at 28 days = N/ mm2
Area of cross section = (PI/4)*D^2
Expected load = stress x area
COMPRESSIVE STRENGTH==>>
Compressive strength = Maximum load/ Cross sectional area
RESULT==>>
Compressive strength of cylinder =…………………….N/mm2
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