Lab Services: Soil testing

Lab Services: Soil testing

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Test Method Title

Standard Practice for Dry Preparation of Soil Samples for Particle-Size Analysis and Determination of Soil Constants

Reference Number

ASTM D421

Material

Soil

Test Property

Sample preparation

Description of Test

This practice covers the dry preparation of soil samples as received from the field for particle-size analysis and the determination of the soil constants. This practice can be used to prepare samples for particle-size and plasticity tests where it is desired to determine test values on air-dried samples, or where it is known that air drying does not have an effect on test results relative to samples prepared in accordance with Practice D2217 (which ASTM has discontinued).

Preferred Test Sample Size

1 drillers jar

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

Dry preparation, particle size analysis, soil

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