Active Standard ASTM D422 | Developed by Subcommittee: D18.03
Book of Standards Volume: 04.08
Historical (view previous versions of standard)
This test method covers the quantitative determination of the distribution of particle sizes in soils. The distribution of particle sizes larger than 75 micrometers (retained on the No. 200 sieve) is determined by sieving, while the distribution of particle sizes smaller than 75 micrometers is determined by a sedimentation process using a hydrometer. The balances, stirring apparatus, hydrometer, sedimentation cylinder, thermometer, sieves, water bath or constant-temperature room, beaker, and timing device used in the method are specified. Sieve analysis, hydrometer analysis, and hygroscopic moisture analysis shall be performed on the sample soil.
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1.1 This test method covers the quantitative determination of the distribution of particle sizes in soils. The distribution of particle sizes larger than 75 μm (retained on the No. 200 sieve) is determined by sieving, while the distribution of particle sizes smaller than 75 μm is determined by a sedimentation process, using a hydrometer to secure the necessary data (Note 1 and Note 2).
2. Referenced Documents (purchase separately) The documents listed below are referenced within the subject standard but are not provided as part of the standard.
D421 Practice for Dry Preparation of Soil Samples for Particle-Size Analysis and Determination of Soil Constants
E11 Specification for Woven Wire Test Sieve Cloth and Test Sieves
E100 Specification for ASTM Hydrometers
ICS Number Code 91.100.30 (Concrete and concrete products)
UNSPSC Code 11111501(Soil)