Sieve Analysis Explained for Construction Materials
Why almost every aggregate and soil specification references gradation
A test that recurs across many materials
Sieve analysis isn't specific to one material — it's used for aggregate destined for concrete, aggregate for asphalt mixes, road-base material, and soil samples in geotechnical work. In each case, the underlying method is similar: shake a weighed sample through a stack of sieves and weigh what's retained on each.
Concrete mix design
Fine and coarse aggregate gradation directly affects a concrete mix's workability, the amount of cement paste needed to fill voids, and the finished material's strength and durability — mix designers reference sieve analysis results (including the fineness modulus for fine aggregate) when proportioning a mix.
Asphalt and base materials
Asphalt mix designs specify a target gradation band, and the aggregate supply is checked against it via sieve analysis. Road base and crusher-run materials are similarly specified by a gradation envelope, since their compacted density and drainage behavior both depend on having the right blend of particle sizes.
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Sources
ASTM C136
Standard Test Method for Sieve Analysis of Fine and Coarse Aggregates.