Answer: B. Slump test
Workability of concrete is measured by slump test.
Slump test: Workability of concrete is measured by the most general test, the Slump test. For this test, a mould in the shape of a frustum of a cone with a top diameter of 10 cm, bottom diameter of 20 cm, and height of 30 cm will be used. By using the slump test, concrete's workability is measured in millimetres.
Type of workability test
Degree of workability
Flow table test
Very high (slump value > 150 mm)
Vee bee consistometer test
Very low (slump value < 50 mm)
Compaction factor test
Low to medium (slump value 25 to 100 mm)
Medium to high (slump value 50 to 150 mm)
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