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ASTM D4944 PDF

Posted on October 5, 2019 by admin

ASTM D Related Standards: ASTM D, D, D, E11, E, E, AASHTO T Standard Test Method for Field Determination of Water. All the Controls products ASTM D standard. Enter now!. Buy ASTM D TEST METHOD FOR FIELD DETERMINATION OF WATER (MOISTURE) CONTENT OF SOIL BY THE CALCIUM.

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ASTM D Standard

For specific hazards statements, see Section 7. Test Method D is to be used as the test method to compare for accuracy checks and correction. A measurement is made of the gas pressure produced when a specified mass of wet or moist soil is placed in a testing device with an appropriate volume of reagent and mixed.

Referenced Documents purchase separately The documents listed below are referenced within the subject standard but are not provided as part of the standard.

Some highly plastic clay soils or other soils not friable enough to break up may not produce representative results because some of the water may be trapped inside soil clods or clumps which cannot come in contact with the reagent.

Some soils containing compounds or minerals that dehydrate with heat such as gypsum which are to have special temperature control with Test Method D may not be affected dehydrated in this test method. Therefore, other methods may be more appropriate when highly accurate results are required, or when the use of test results is sensitive to minor variations in the values obtained.

Historical Version s – view previous versions of standard. For specific hazards statements, see Section 7. Some soils containing compounds or minerals that dehydrate with heat such as gypsum which are to have special temperature control with Test Method D may not be affected dehydrated in this test method. Referenced Documents purchase separately The documents listed below are referenced within the subject standard but are not provided as part of the standard.

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A measurement is made of the gas pressure produced when a specified mass of wet or moist soil is placed in a testing device with an appropriate volume of reagent and mixed.

There may be some soils containing certain compounds or chemicals that will react unpredictably with the reagent and give erroneous results.

ASTM D4944

Any such problem will become evident as calibration or check tests with Test Method D are made. Active view current version of standard. This standard does not purport to address all of the safety problems associated with its use. Calcium carbide, used as a reagent, reacts with water as it is mixed with the soil by shaking and agitating with the aid of steel balls in the apparatus.

The inch-pound units given in parentheses are mathematical conversions, which are provided for information purposes only and are not considered standard.

Reliable results depend on many factors; Practice D provides a means of evaluating some of those factors. Calcium carbide, used as a reagent, reacts with water as it is mixed with the soil by shaking and agitating with the aid of steel balls in the apparatus. This test method is used for these occasions. There may be some soils containing certain compounds or chemicals that will react unpredictably with the reagent and give erroneous results.

It is the responsibility of the user of this standard to establish appropriate safety, health, and environmental practices and determine the applicability of regulatory limitations prior to use. Inaccuracies may result because specimens are too small to properly represent the total soil, from clumps of soil not breaking up to expose all the available water to the reagent and from other inherent procedural, equipment or process inaccuracies.

The quality of the result produced by this standard is dependent on the competence of the personnel performing it, and the suitability of the equipment and facilities used. It is beyond the scope of this standard to consider significant digits used in analytical methods for engineering design.

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Link to Active This link will always route to the current Active version of the standard. Results are sometimes needed within a short time period and in locations where it is not practical to install an oven or to transport samples to an oven. Users of this standard are cautioned that compliance with Practice D does not in itself ensure reliable results. In addition they are representative of the significant digits that generally should be retained.

ASTM D, Test equipment Controls

Some highly plastic clay asfm or other soils not friable enough to break up may not produce representative results because some of the water may asfm trapped inside soil clods or clumps which cannot come in contact with the reagent.

Link to Active This link will always route to the current Active version of the standard. Any such problem will become evident as calibration or check tests with Test Method D are made. To produce accurate results, the reagent must react with all the water which is not chemically hydrated with soil minerals or compounds in the soil.

To produce accurate results, the reagent must react with all the water which is not chemically hydrated with soil minerals or compounds in the soil. It is the responsibility of qstm user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use.

Test Method D is to be used as the test method to compare for accuracy checks and correction.

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