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Lab Services: Soil testing

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Test Method Title

Standard Test Method for Particle-Size Analysis of Soils

Reference Number

ASTM D422

Material

Soil

Test Property

Grain Size

Description of Test

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 #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.

Preferred Test Sample Size

1 drillers jar, but depends upon the largest size particle in the sample; the bigger the largest size particle is, the larger the sample must be

Number of Test Specimens

1

Test Specimen Size

Material passing #10 sieve of 115 grams for sandy soil and 65 grams for silt and clay soil

Keywords

Grain size, hydrometer analysis, hygroscopic moisture, particle-size, sieve analysis

For more information, contact GeoTesting Express:



Atlanta

770.645.6575


Boston

978.635.0424


Chicago

224.676.1371


New York

212.566.6630



info@geotesting.com

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