ASTM D4643 PDF

ND D – MICROWAVE METHOD OF DRYING SOILS. Conduct this procedure according to ND D Consult the current edition of ASTM for procedure in. ASTM D – Free download as PDF File .pdf), Text File .txt) or read online for free. ASTM D Standard Test Method for Determination of Water Content of Soil and Rock by Microwave Oven Heating. standard by ASTM.

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Agencies that meet the criteria of Practice D are generally considered capable of competent and objective testing. Historical Version s – view previous versions of standard. Soil testing Lab Services: For example, if four significant digits are required in any of the above calculations, then the water content has to be recorded to the nearest 0. Active view current version of standard. In addition, they are representative of the significant digits that generally should be retained.

Soil testing Back to Results Print. Active view current version of standard. For some soils, such as those containing significant amounts of halloysite, mica, montmorillonite, gypsum or other hydrated materials, highly organic soils, or soils in which the pore water contains dissolved solids such as salt in the case of marine depositsthis test method may not yield reliable water content values.

This procedure is repeated until the mass becomes nearly constant. Request Quote Client Login. 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. Reliable results depend on many factors; Practice D provides a means of evaluating some of those factors. Link to Active This link will always route to the current Active version of the standard.

Agencies that meet the criteria of Practice D are generally considered capable of competent and objective testing. A moist soil specimen is placed in a suitable container and its mass is determined. The use of a microwave oven is one such method. Note 1-Notwithstanding statements of precision and bias contained in this standard, the precision of this test method is dependent on the competence of the personnel performing it and the suitability of the equipment and facilities used.

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For some soils, such as those containing significant amounts of halloysite, mica, montmorillonite, gypsum or other hydrated materials, highly organic soils, or soils in which the pore water contains dissolved solids such as salt in the case of marine depositsthis test method may not yield reliable water content values. Users of this test method are cautioned that compliance with Practice D does not in itself ensure reliable results.

For example, if four significant digits are required in any of the above calculations, then the water content has to be recorded to the nearest 0.

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Referenced Documents purchase separately The documents listed below are e4643 within the subject standard but are not provided as part of the standard. Degregation of individual particles may occur, along with vaporization or chemical ast. Therefore, the procedure recommended in this test method is meant to serve as a guide when using the microwave oven. This occurs since 1 plus the water content not in percent will have four significant digits regardless of what the value of the water content is; that is, 1 plus 0.

It is then placed in a microwave oven, subjected to an interval of drying, and removed from the oven and its new mass is determined. Performance of the test method utilizing another system of units shall not be considered non-conformance.

ASTM D Standard

Larger size particles can be tested; however, care must be taken because of f4643 increased chance of particle shattering. This is especially important if the water content will be used to calculate other relationships such as moist mass to dry mass or vice versa, wet unit weight to dry unit weight or vice versa, and total density to dry density or vice versa.

Link to Active This link will always route to the current Active version of the standard. 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. Referenced Documents purchase separately The documents listed below are referenced within the adtm standard but are not provided as part of the standard. The quality of the results produced by this test method is dependent on the competence of the personnel performing asfm and the suitability of the equipment and facilities used.

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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. For more information, contact: This method may not be appropriate when highly accurate results are required. No other units of measurement are included in this test method.

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

Users of this test method are cautioned that compliance with Practice D does not in itself ensure reliable testing. It is therefore recommended that samples used in this test method not be used for other tests subsequent to drying.

Referenced Documents purchase separately The documents listed below are referenced within the subject standard but are not provided as part of the standard. Reliable testing depends on aastm factors; Practice D provides a means of evaluating some of those factors. This test method is best suited for minus 4 sized material. For Individuals with needing special assistance for disabilities or limited English proficiency Please contact our Title VI specialist at Link to Active This link will always route to the current Active version of the standard.

Larger size particles can be tested; however, care must be taken because of the increased chance of particle shattering. The principal objection to the use of the microwave oven for aastm content determination has been the possibility of overheating the soil and obtaining erroneous results.

The use of Test Method D for water content determination can be time consuming and there are occasions when a more expedient method is desirable.

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