AASHTO T 37:07(2020) Standard Method of Test for Sieve Analysis of Mineral Filler for Hot Mix Asphalt (HMA).
Obtain the sample for test in accordance with M 17 and reduce it to testing size in accordance with R 76. Use a minimum of 100 g of dry material for each sieve analysis.
Dry the test sample to constant mass at a temperature of 110 ± 5°C (230 ± 9°F) and determine the mass to the nearest 0.1 g.
6.2. After drying and determining the mass, place the dry test sample on the 600-pm (No. 30) sieve, which shall be nested above the 300-pm (No. 50) and 75-pm (No. 200) sieves. Wash the material by means of a stream of water from a faucet (Note 1). Continue the washing until the water coming through the 75-pm (No. 200) sieve is clear (Note 2). Remove the material retained on each of the three sieves into individual pans, washing the sieves as necessary to remove all material. If desired, excess water may be decanted from the pans prior to drying (Note 3). Dry the residue from each sieve to constant mass at a temperature of 110 ± 5°C (230 ± 9°F) (Note 4). Calculate the mass of material retained on each sieve as a percentage of the original sample.
Note I —A spray nozzle or a piece of rubber tubing attached to a water faucet may be used for the washing. The velocity of the water, which may be increased by pinching the tubing, must be controlled to prevent loss of any sample by splashing over the sides of the sieves.
Note 2 —Take care to avoid accumulation of water on the 75-jim (No. 200) sieve because it may become clogged such that the operation cannot be completed within a reasonable period. Note 3 If excess water is decanted from the pan containing the washed aggregate prior to drying, care should be taken to avoid the loss of fines. The excess water should be decanted through a 75-jim (No. 200) sieve and any material on the sieve should be returned to the sample with minimal washing.
Note 4—Some material passes the 75-pm (No. 200) sieve on dry sieving that did not pass during the washing operation. When desired, additional information may be obtained by dry sieving the portion of the sample retained on the 75-pm (No. 200) sieve in accordance with T 88.
Report the results of the sieve analysis as the total percentage passing each sieve, expressed to the nearest 0.5 percent.
Precision—The estimates of precision for this test method are shown in Table I. They are based on results of an interlaboratory testing program where replicable samples of four different mineral fillers were tested in 20 laboratories using this test method.AASHTO T 37 pdf download.