GSO ASTM D1140:2022
Gulf Standard
Current Edition
·
Approved on
12 May 2022
·
Standard Test Methods for Determining the Amount of Material Finer than 75-μm (No. 200) Sieve in Soils by Washing
GSO ASTM D1140:2022 Files
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GSO ASTM D1140:2022 Scope
1.1 These test methods cover the determination of the
amount of material finer than a 75-µm (No. 200) sieve by
washing of material with a maximum particle size of 75 mm (3
in.).
1.2 The methods used in this standard rely on the use of
water or a dispersant to separate and remove materials finer
than a 75-µm (No. 200) sieve. During these processes soluble
substances, such as salts and other minerals, may also be
removed. It is not within the scope of this standard to
differentiate between the removal of fine particles and soluble
substances. It is recommended that materials containing significant amounts of soluble substances be tested using other
methods of separation.
1.3 Two methods for determining the amount of material
finer than the 75-µm (No. 200) sieve are provided. The method
to be used shall be specified by the requesting authority. If no
method is specified, the choice should be based upon the
guidance given in 5.2, 5.3, and 5.4.
1.3.1 Method A—Test specimen is dispersed by soaking in
water prior to wash sieving.
1.3.2 Method B—Test specimen is dispersed by soaking in a
dispersing solution prior to wash sieving.
1.4 Units—The values stated in SI units are to be regarded
as standard. Except the sieve designations are typically identified using the “alternative” system in accordance with Specification E11, such as 3 inch and No. 200, instead of the
“standard” of 75-mm and 75-µm, respectively. Reporting of
test results in units other than SI shall not be regarded as
nonconformance with this test method. The use of balances or
scales recording pounds of mass (lbm) shall not be regarded as
nonconformance with this standard.
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