Sieve analysis and fineness modulus

AASHTO T 27 · AASHTO T 11 · ASTM C136 · ASTM C117

Explained inSampling and Reducing Aggregate Samples

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Sieve analysis and fineness modulus

AASHTO T 27 · AASHTO T 11 · ASTM C136 · ASTM C117

Enter the mass left on each sieve. The percentages are of the original dry mass, so what washed through the 75 µm sieve counts with the pan.

Method

B and C sieve a reduced split of the minus 4.75 mm, for samples with a lot of coarse and fine material. Your agency says which to use.

Original dry mass, M, g

Dry mass after washing, g (optional)

Blank when the sample was sieved without washing (T 27 alone).

Mass retained on each sieve
Sieve	Sieve opening, mm	Mass retained, g
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Sieve openings in millimeters: 37.5, 25, 19, 12.5, 9.5, 4.75 (No. 4), 2.36 (No. 8), 1.18 (No. 16), 0.6 (No. 30), 0.3 (No. 50), 0.15 (No. 100), 0.075 (No. 200). Any order.

Mass in the pan, g

Mass retained from the split, on sieves below 4.75 mm
Sieve	Sieve opening, mm	Mass retained, g
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As weighed from the split: 2.36 (No. 8), 2.0 (No. 10), 1.18 (No. 16), 0.6 (No. 30), 0.425 (No. 40), 0.3 (No. 50), 0.15 (No. 100), 0.075 (No. 200).

Specification

Specification band, percent passing
Limit	Sieve opening, mm	Minimum, %	Maximum, %
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6

Optional. The example row is the 5 to 30 percent passing the No. 50 (0.300 mm) sieve that most specifications allow for concrete sand (IMCP manual, chapter 4).

Fineness modulus minimum (optional)

Concrete sand: 2.3 to 3.1 (ASTM C33 and AASHTO M 6, as the IMCP manual gives them). Leave both blank for coarse aggregate.

Fineness modulus maximum (optional)

Example values: a concrete sand. Your specification sets the band.

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