ASTM-D422 2002

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D422-63(2002)e1 Standard Test Method for Particle-Size Analysis of Soils

Published By	Publication Date	Number of Pages
ASTM	2002	8

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Categories: 91.100.30 - Concrete and concrete products, ASTM

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Description

1.1 This test method covers the quantitative determination of the distribution of particle sizes in soils. The distribution of particle sizes larger than 75 ?m (retained on the No. 200 sieve) is determined by sieving, while the distribution of particle sizes smaller than 75 ?m is determined by a sedimentation process, using a hydrometer to secure the necessary data (Note 1 and Note 2).

Note 1Separation may be made on the No. 4 (4.75-mm), No. 40 (425-?m), or No. 200 (75-?m) sieve instead of the No. 10. For whatever sieve used, the size shall be indicated in the report.

Note 2Two types of dispersion devices are provided: ( 1 ) a high-speed mechanical stirrer, and ( 2 ) air dispersion. Extensive investigations indicate that air-dispersion devices produce a more positive dispersion of plastic soils below the 20-?m size and appreciably less degradation on all sizes when used with sandy soils. Because of the definite advantages favoring air dispersion, its use is recommended. The results from the two types of devices differ in magnitude, depending upon soil type, leading to marked differences in particle size distribution, especially for sizes finer than 20 ?m.

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PDF Pages	PDF Title
1	Scope Referenced Documents Apparatus
2	Dispersing Agent FIG. 1 FIG. 2
3	Test Sample FIG. 3 FIG. 4
4	Procedure Determination of Composite Correction for Hydrometer Reading Hygroscopic Moisture Dispersion of Soil Sample
5	Hydrometer Test Sieve Analysis Sieve Analysis Values for the Portion Coarser than the No. 10 (2.00-mm) Sieve Hygroscopic Moisture Correction Factor Percentages of Soil in Suspension
6	Diameter of Soil Particles Sieve Analysis Values for Portion Finer than No. 10 (2.00-mm) Sieve TABLE 1
7	Graph Report TABLE 2
8	Keywords TABLE 3

Additional information

Standard Title	D422-63(2002)e1 Standard Test Method for Particle-Size Analysis of Soils
Published Code	ASTM
Publication Date	2002
Pages Count	8
ICS Codes	91.100.30 - Concrete and concrete products

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ASTM-D422 2002

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