ASTM D4944 PDF

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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Test Method D is to be used as the test method to compare for accuracy checks and correction. The inch-pound units given in parentheses are mathematical conversions, which are provided for information purposes only and are not considered standard. Test V4944 D is to be used as the test method to compare for accuracy checks and correction.

Referenced Documents purchase separately The documents listed below are referenced within the subject standard but are not provided as part of the standard. This test method is used for these occasions.

This standard does not purport to address all of the safety problems associated with its use.

ASTM D4944

Therefore, other methods may be more appropriate when dd4944 accurate results are required, or when the use of test results is sensitive to minor variations in the values obtained. Any such problem will become evident as calibration or check tests with Test Method D are made. 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. In addition they are representative of the significant digits that generally should be retained.

Link to Active This link will always route to the current Active version of the standard. 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 ashm water to the reagent and from other inherent procedural, equipment or process dd4944.

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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. 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.

A measurement is made of the gas pressure produced when a specified mass of wet or moist soil is placed in a testing d444 with an appropriate volume of reagent and mixed.

Link to Active This link will always route to the current Active version of the standard. For specific hazards statements, see Section 7.

ASTM D, Test equipment Controls

Reliable results depend on many factors; Practice D provides a means of evaluating some of those factors. Some soils containing compounds or minerals that dehydrate with heat such as gypsum which are x4944 have special temperature control with Test Method D may not be affected dehydrated in this test method.

It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use. 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.

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.

Users of this standard are cautioned that compliance with Practice X4944 does not in itself ensure reliable results. Some soils containing compounds or minerals that dehydrate with heat such d4944 gypsum which are to have special temperature control with Test Method D may not be affected dehydrated in this test method.

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Historical Version s – view previous versions of standard. There may be some soils containing certain compounds or chemicals that will react unpredictably with the reagent and give erroneous asgm. 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.

Active view current version of standard. Any such problem will become c4944 as calibration or check tests with Test Method D are made. For specific hazards statements, see Section 7. There may be dd4944 soils containing certain compounds or chemicals that will react unpredictably with the reagent and give erroneous results. 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.

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. Referenced Documents purchase d4494 The documents listed below are referenced asm the subject standard but are not provided as part of the standard. It is beyond the scope of this standard to consider significant digits used in analytical methods for engineering design.

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 the user of this standard to establish appropriate safety, health, and environmental practices and determine the applicability of regulatory limitations prior to use.