Fine / Coarse Aggregate ( NATURAL AND CRUSHED SAND)

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Fine Aggregate

Sr. No. Particulars Test Method/ Reference Code Sample size required Significance
1 Sieve Analysis IS 2386 (I):1963 100 kgs. Helps proportioning of ingredients
2 Specific gravity and water absorption IS 2386 (III):1963 100 kgs. Helps classification of materials
3 Bulk density IS 2386 (pt.III ) : 1963 100 kgs. Helps conversion of weight to volume
4 Flakiness Index IS 2386 (pt. I ) : 1963 100 kgs. Flaky aggregate increase specific surface area & W/ C ratio.
5 Elongation Index IS 2386 (pt. I ) : 1963 100 kgs. Higher elongation increases water demand for concrete making it harsh.
6 Crushing Value IS 2386 (pt.IV ) : 1963 100 kgs. Determines resistance of aggregates to gradual Load.
7 Impact Value IS 2386 (pt.IV ) : 1963 100 kgs. Determine resistance to sudden impact or shocks.
8 10 % Fines Value IS 2386 (pt.IV ) : 1963 100 kgs. Indicates resistance to crushing.

Coarse Aggregate

Sr. No. Particulars Test Method/ Reference Code Sample size required Significance
1 Sieve analysis & fineness modulus IS 2386 (I) :1963 50 kgs. For proportioning of ingredients of concrete mix.
2 Material Finer than 75 Micron IS 2386 (I) :1963 50 kgs. Higher fine content increase water demand for concrete.
3 Specific Gravity and Water Absorption IS 2386 (pt.III ) : 1963 50 kgs. Classify the type of aggregate. & to check the porosity of the aggregates
4 Bulk density IS 2386 (pt.III ) : 1963 50 kgs. Conversion weight to volume
5 Moisture Content IS 2386 (pt.III ) : 1963 50 kgs. Conversion weight to volume
6 Slit Content (Natural Sand)
A) Volume Base
B) Wet Basis
IS 2386 (I) :1963 50 kgs. Conversion weight to volume