Concrete Properties
Bleeding
// Definition
The migration of water to the surface of freshly placed concrete. Excessive bleeding weakens the surface and creates a porous top layer.
Caused by excess water, poor gradation, or insufficient fines. Mitigated by lowering w/c, improving gradation, or adding mineral admixtures.
// Related Indian Standards
IS 456
// Cross-references
Fine Aggregate
Aggregate passing the 4.75 mm IS sieve — sand. Fills voids between coarse aggregates and contributes to workability.
Segregation
The separation of coarse aggregate from cement paste in fresh concrete. Causes honeycombing and weak spots.
W/C Ratio (Water-Cement Ratio)
The ratio of the weight of water to the weight of cement in a concrete mix. The single most important factor controlling strength and durability.
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