SSC JE Civil Engineering 23-Mar-2021 Shift 1 Paper

Concept:
A slump test is the simplest test to determine the workability of concrete, involves low cost and provides immediate results.
The dimension of slump cone is as follows:
It can be defined as the difference between the height of the concrete before removing slump cone (mould) and height of the concrete after removing of slump cone as measured during concrete slump test. IS 456 has given the following values of slumps for different workability of concrete.

Degree of Workability	Slump Value (mm)
Very low	Less than 25
Low	25 - 75
Medium	50 - 100
High	75 - 100
Very High	100 - 150