Concrete Properties
Slump
// Definition
A measure of the consistency and workability of fresh concrete, determined by the slump cone test. Reported in millimetres.
Typical slump ranges: 25-75 mm (low workability), 75-150 mm (medium — most RMC), 150-200 mm (high — pumped concrete). SCC has slump flow >550 mm.
// Related Indian Standards
IS 1199IS 456
// Cross-references
Slump Flow (SCC)
For self-compacting concrete (SCC), slump flow measures the spread diameter of fresh concrete after lifting the cone — typically 550-850 mm.
Workability
The ease with which fresh concrete can be mixed, transported, placed, compacted, and finished without segregation.
Slump Test (IS 1199)
A standard field test measuring the consistency of fresh concrete using a 300 mm slump cone. The collapse height after lifting the cone is the slump value.
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