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The fineness modulus of an aggregate is roughly proportional to:
- Aaverage size of particles in the aggregate
- Bgrading of the aggregate
- Cspecific gravity of the aggregate
- Dshape of the aggregate
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Fineness modulus of an aggregate is an indicator of the mean size of particles. The coarser the particle, the higher the fineness modulus.
Type of Sand
Fineness Modulus Range
Fine Sand
2.2 – 2.6
Medium Sand
2.6 – 2.9
Coarse Sand
2.9 – 3.2
Type of Sand
Fineness Modulus Range
Fine Sand
2.2 – 2.6
Medium Sand
2.6 – 2.9
Coarse Sand
2.9 – 3.2