ASTM D4643 PDF

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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No other units of measurement are included in this test method.

This test method is best suited for minus 4 sized material. Link to Active Astj link will always route to the current Active version of the standard. 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.

ASTM D Standard

Active view current version of standard. Soil testing Back to Results Print.

The quality of the results produced by this test method is dependent on the competence of the personnel x4643 it and the suitability of the equipment and facilities used. Users of this test method are cautioned that compliance with Practice D does not in itself ensure reliable results. 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.

The principal objection to the use of the microwave oven for water content determination has been the possibility of overheating the soil and obtaining erroneous results.

Historical Version asm – view previous versions of 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 d464 within the subject standard but are not provided as part of the standard. For some soils, such as those containing significant amounts of halloysite, mica, montmorillonite, gypsum or other hydrated materials, highly organic soils, or atsm 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.

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For some soils, such as those containing significant amounts of halloysite, mica, montmorillonite, gypsum or other astk 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. 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.

Larger size particles can be tested; however, care must be taken because of the increased chance of particle shattering. Some microwave ovens have settings at less than full power, which can also be used to reduce overheating.

While not eliminating this possibility, the incremental drying procedure described in this test method will minimize its effects.

The behavior of a soil, when subjected to microwave energy, is dependent on its mineralogical compositions, and as a result no one procedure is applicable for all types of soil. 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. Test Method D is to be used as the method to compare for accuracy checks and correction.

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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. It is therefore recommended that samples used in this test method not be used for other tests subsequent to drying.

ASTM D4643

Link to Active This link will always route to the current Active version of the standard. Reliable testing depends on many factors; Practice D provides a means of evaluating some of those factors.

Active view current version of standard. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory asmt prior to use.

For more information, contact: The use of a microwave oven is one such method. It is beyond the scope of this standard to consider significant digits used in analysis methods for engineering design. 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. Referenced Documents purchase separately The documents listed below are referenced within the subject standard but are not provided as part of the standard.

Degregation of individual particles may occur, along with vaporization or chemical transition. Performance of the test method utilizing another system of units shall not be considered non-conformance.

Users of this test method are cautioned that compliance with Practice D does not in itself ensure reliable testing.