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Lab Services: Soil testing

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Test Method Title

Standard Method of Test for Specific Gravity of Soils

Reference Number

AASHTO T 100

Material

Soil

Test Property

Specific Gravity

Description of Test

This test method covers the determination of the specific gravity of soils that pass the 4.75-mm (#4) sieve, by means of a pycnometer. When the soil contains particles larger than the 4.75-mm sieve, the method outlined in AASHTO T 85, shall be followed. When the soil is composed of particles both larger and smaller than the 4.75-mm sieve, the sample shall be separated on the 4.75-mm sieve and the appropriate test method used on each portion. The specific gravity value for the soil shall be the weighted average of the two values. When the specific gravity value is to be used in calculations in connection with the hydrometer portion of AASHTO T 88, it is intended that the specific gravity test be made on that portion of the soil which passes the 2.00-mm (#10 ) sieve.

Preferred Test Sample Size

1 drillers jar

Number of Test Specimens

1

Test Specimen Size

at least 25 g dry, passing #4 sieve

Keywords

Specific gravity

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