Step No. 1
First, clean the inner surface of the empty mould and then apply oil to it.
Set the mould on a horizontal non-porous and non-absorbent base plate.
Step No. 2
Step No. 3
Fill the mould fully by pouring freshly mixed concrete into three equal layers.
Step No. 4
Stroke each layer 25 times with the standard tamping rod over the cross-section.
After stroking 25 times the top layer is struck off level, now lift the mould slowly in the vertical direction without disturbing the concrete cone.
Use the measuring scale to measure the difference level between the height of the mould and the concrete sample.
Step No. 6
The subsidence of concrete is known as the slump and the value of slump is measured in mm.
Step No. 7
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