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() ASTM D Standard Test Method for Particle-Size Analysis of Soils. West Conshohocken, PA. This test method covers the quantitative determination of the distribution of particle sizes in soils. The distribution of particle sizes larger than 75 micrometers . American Society for Testing and Materials ASTM. Current edition approved Oct. 15, Published October 8 р. This test method.

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Use on a local area network or other network is not permitted. This set consists of the following sieves: This water must be removed, either by using a water trap on the air line, or by blowing the water out of the line before using any of the air astm d 63 dispersion purposes.

ASTM D – 63() Standard Test Method for Particle-Size Analysis of Soils

NOTE 10—The initial air pressure of 1 psi is required to prevent the soil-water mixture from entering the air-jet chamber when the mixture is transferred to the dispersion cup. The distribution 422-36 particle sizes larger than 75 micrometers. No further reproductions authorized.

Sieve analysis, hydrometer analysis, and hygroscopic moisture analysis shall be performed on the sample soil. Distribution of the PDF is not permitted.

For a given hydrometer and sedimentation cylinder, values vary according to the hydrometer readings. NOTE 12—It is important to remove the hydrometer immediately after each reading.

ASTM D 422 – 63 (Reapproved 2007) Standard Test Method for Particle-Size Analysis of Soils

Current edition approved Oct. Do we really need a prescribed pattern? The shaft shall be equipped with a replaceable stirring paddle made of metal, plastic, or hard rubber, ashm shown in Fig.

This set consists of the following sieves: Bring the liquid and the hydrometer to the other temperature to be used, satm secure the composite correction as before.

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Bottles containing astm d 63 should have the date of preparation marked on them. For both hydrometers, H and H: When the soil is mostly sand the sample should be approximately g. Extensive investigations indicate that air-dispersion devices produce a more positive dispersion of plastic soils below the ?

D — 63 Reapproved.

NOTE 8—A check on the mass values and the thoroughness of pulverization of the clods may be secured by weighing the portion passing the No.

In no case turn or manipulate fragments in the sample through the sieve by hand. The shaft shall be of such length that the stirring paddle will operate not less ashm 3?

Sieve analysis, hydrometer analysis, and hygroscopic moisture analysis shall be performed on the sample soil.

Place the liquid in a sedimentation cylinder and the cylinder in the constant-temperature water bath, set for one of the two temperatures to be used. NOTE 2—Two types of dispersion devices are provided: The distribution of particle sizes larger than 75?

Any soil remaining in the bottom of the cylinder during the? Percentages of Soil in Suspension Values shown on the scale are computed using a speci? NOTE 5—Water may condense in air lines when not in use.

ASTM D 422—63 (2007) Test Method for Particle-size Analysis of Soils (PDF Download)

Diameter of Soil Particles NOTE 7—Solutions of this salt, if acidic, slowly revert or hydrolyze back to the orthophosphate form with a resultant decrease in dispersive action. Transfer the soil-water slurry from the beaker to the air-jet dispersion cup by washing with distilled or demineralized water. It is a number less than one, except when there is no hygroscopic moisture. This mass is equal to the total percentage retained on the No. Does it really matter when 4226-3 next shovelful of earth from the same excavation is minutely different.

ASTM – D – STM for Partical-Size Analisis of Soil_百度文库

At the end of 1 min set the cylinder in a convenient location and take hydrometer readings at the following intervals of time measured from the beginning of sedimentationor as many as may be needed, depending on the sample or the speci? This water must be removed, either by using a water trap on the air line, or by blowing the water out of the line before using any of the air for dispersion purposes.

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Stir for a period of 1 min. This test method covers the quantitative determination of the distribution of particle sizes in soils. A dispersing agent is used in the water, however, and the speci? The PDF Download is licensed per individual in which the individual can place on up to four electronic devices for their personal use.

When the temperature of the liquid becomes constant, insert the hydrometer, and, after a short interval to permit the hydrometer to come to the temperature of the liquid, read the hydrometer at the top of the meniscus 4 formed on the stem. For a volume license the PDF is licensed to the person in which it is assigned. Bottles containing solutions should have the date of preparation marked on them.

For hydrometer H the composite correction is the difference between this reading and one; 4226-3 hydrometer H it is the difference between the reading and zero. Determination of Composite Correction for Hydrometer Reading 7. This value is the weight W in the equation for percentage remaining in suspension. NOTE 5—Water may condense in air lines when not in use. S mass of air-dried soil selected for purpose of tests, as prescribed in Practice Dshall be sufficient to yield quantities for mechanical analysis as follows: