The slump test (IS 1199) for concrete workability is NOT suitable for:
Choose the correct answer
Low workability concrete (slump 10-40 mm)
Medium workability concrete
Very stiff or very lean mixes with near-zero slump, for which the Vee-Bee test is more appropriate
High slump concrete (>100 mm)
Correct Answer
C. Very stiff or very lean mixes with near-zero slump, for which the Vee-Bee test is more appropriate
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Slump test range: 25-125 mm (meaningful). For stiff concrete (Vee-Bee time > 10 s) or dry mixes: Vee-Bee consistometer test. For high workability/SCC: slump flow test. Compaction factor test: measures workability by ratio of compacted to fully compacted concrete weight.
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