Standard Method for Sieve Analysis of Fine and Coarse Aggregates (ASTM C136)

The standard test method for sieve analysis of fine and coarse aggregates determines the grading of materials for use as aggregates, ensuring compliance with specifications, and providing data for quality control in the production of various aggregate products and mixtures.

The necessary devices for this test include a balance with specific readability for fine or coarse aggregates, test sieves conforming to ASTM E11, a mechanical sieving device, an oven capable of maintaining 110 degrees Celsius, a sieve brush, sample container/pan, sieve pan, sieve stack cover, and a method to record and analyze findings.

First, dry the test sample in an oven at 110 degrees Celsius. Measure the tare weight of the sample container, then the gross weight with the sample. Select suitable sieves with decreasing opening sizes from top to bottom, nest them on a sieve pan, place the sample on the top sieve, and cover the stack.

Agitate the sieves using a mechanical sieving apparatus for a sufficient period, ensuring no more than 1% by mass of material retained on any sieve passes through during one minute of continuous sieving. The Gilson SS15 mechanical sieve shaker offers superior accuracy and repeatability through its combined motion.

After sieving, measure and record the mass of the material retained on each sieve and in the pan to the nearest 0.1 gram. The total mass should closely match the original sample mass; a difference exceeding 0.3% requires repeating the test. Record the total percentage of material passing each sieve, or the mass/percentage of material retained on each sieve and pan, to determine particle size distribution.