ASTM D4944 PDFASTM 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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The inch-pound units given in parentheses are mathematical conversions, which are provided for information purposes only and astj not considered standard. This standard does not purport to address atsm of the safety problems astj with its use.

For specific hazards statements, see Section 7. 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.

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. 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.

Link to Active This link will always route to the current Active version of the standard. 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.

It is beyond the scope of this standard to consider significant digits used in analytical d444 for engineering design. 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.

Link to Active This link will always route to the current Active version of the standard. Some highly plastic clay soils or other zstm not friable enough to break xstm 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.

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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. In addition they are representative of the significant digits that generally should be retained.

Calcium carbide, used as a reagent, reacts with water as sstm is mixed with the soil by shaking and agitating with the aid of steel balls in the apparatus. Test Method D is to be used as the test method to compare for accuracy checks and correction. Test Method D is to be used as the test method to compare for accuracy checks and correction. Historical Version s – view previous versions of standard. sstm

ASTM D4944

Any such problem will become evident as calibration or check tests with Test Adtm D are made. 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.

Users of this standard are cautioned that compliance with Practice D does not in itself ensure reliable results. Any such problem will become evident as calibration or check tests with Test Method D are made. Active view current version of 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. Referenced Documents purchase separately The documents listed below are referenced within the subject standard but are not provided as part of the standard.

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.

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There may be some soils containing certain compounds or chemicals that will react unpredictably with the reagent and give erroneous results. For specific hazards statements, see Section 7. 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.

ASTM D Standard

Referenced Documents purchase separately The documents listed below are referenced within the subject standard but are not provided as part of the standard. 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. There may be some soils containing certain compounds or chemicals that will react unpredictably with the reagent and give erroneous results. Reliable results depend on many factors; Practice D provides a means of evaluating some of those factors.

ASTM D, Test equipment Controls

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. Some highly plastic clay soils or other soils not friable enough to break up may not produce representative results because some of d944 water may be trapped inside soil clods or clumps which cannot come in contact with the reagent.

This test method is used for these occasions. Inaccuracies may result because specimens are too small to properly represent the total soil, ashm clumps of soil not breaking up to expose all the available water to the reagent and from other inherent procedural, equipment or process inaccuracies.