What it is
The apparent volume of damp sand is compared with its settled or saturated volume.
Public test guide
Bulking of fine aggregate
Measures the temporary increase in sand volume caused by moisture films around the particles.
Plain-language explanation
What the test tells you.
The project specification controls the exact method and acceptance requirement.
What is used
Representative fine aggregate, graduated container, water and mixing tools.
What it determines
The percentage increase in apparent volume at the tested moisture condition.
Why it matters
Important when sand is batched by volume because uncorrected bulking can change mixture proportions.
Typical test sequence
From sample
to result.
- 01
Place and measure the damp sand volume
- 02
Add water and settle the particles
- 03
Compare volumes and calculate bulking
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