The 'Slump Flow' test is specifically used for which type of concrete?
Choose the correct answer
Dry lean concrete for road sub-base
Self-Compacting Concrete (SCC) — measures flow spread diameter (500–700 mm) without vibration
High-strength concrete M60 and above
Regular M20/M25 concrete for general construction
Correct Answer
B. Self-Compacting Concrete (SCC) — measures flow spread diameter (500–700 mm) without vibration
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Slump flow (IS 1199 Part 6 / BS EN 12350-8): used for Self-Compacting Concrete (SCC). Standard concrete: slump test (IS 7320). SCC flows without vibration → use flow spread diameter (500–700 mm target) and T500 time (< 2–5 s). SCC mix: high powder (cement+FA+filler), superplasticiser, VMA. Slump flow replaces slump because SCC collapses into a spread.
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