Standard Method of Test for
Specific Gravity of Soils
AASHTO Designation:T 100-061
ASTM Designation: D 854-00
1.1.This method covers determination of the specific gravity of soils by means ofa pycnometer.
When the soil is composed of particles larger than the 4.75-mm (No. 4) sieve, the method outlined in
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 (Note 1).
When the specific gravity value is to be used in calculations in connection with the hydrometer portion of AASHTO T 88,
Particle Size Analysis of Soils, it is intended that the specific gravity test be made on that portion of the soil that passes
the 2.00-mm (No. 10) sieve.
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