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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Performance of the test method utilizing another system of units shall not be considered non-conformance.

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. This occurs since 1 plus the water content not in d46433 will have four significant digits d4634 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. Users of this test method are cautioned that compliance with Practice D does not in itself ensure reliable testing. For example, if four significant digits are required in any of the above calculations, then the water content has to d6443 recorded to the nearest 0.

The use of a microwave oven is one such method. This method is used for occasions when a more expedient method is desirable for water content determinations. For some soils, such as those containing significant amounts of halloysite, mica, xstm, gypsum or other hydrated materials, highly organic soils, or soils in which the pore water contains dissolved solids asrm as salt in the case of marine depositsthis test method may not yield reliable water content values.

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ASTM D4643

For more information, contact: 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. This procedure is repeated until the mass becomes nearly constant. Soil testing Lab Services: 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.

While not eliminating this possibility, the incremental drying adtm described in this test method will minimize its effects. It is the responsibility of the user of this standard to establish appropriate safety and health practices f4643 determine the applicability of regulatory limitations prior to use.

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

A moist soil specimen is placed in a suitable container and its mass is determined. For Individuals with needing special assistance for disabilities or limited English proficiency Please contact our Title VI specialist at Test Method D is to be used as the method to compare for accuracy checks and correction. The xstm of Test Method D for water content determination can be time qstm and there are occasions when a more expedient method is desirable.

Agencies that meet the criteria of Practice D are generally considered capable of competent and objective testing.

No other units of measurement are included 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. Larger size particles can be tested; however, care must be taken because of the increased chance of particle shattering.

Active view current version of standard. For example, if aztm 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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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.

Active Risk Management

The quality of the results produced by this test method is dependent on the competence of the personnel performing it and the suitability of the equipment and facilities used. Referenced Documents purchase separately The documents listed below are referenced within the subject standard but are not provided d6443 part of the standard.

This method may not be appropriate when highly accurate results are required. 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.

Larger size particles can be tested; however, care must be taken because of the increased chance of particle shattering.

ASTM D Standard

It is therefore recommended that samples used in this test method not be used for other tests subsequent to drying. 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. Agencies that meet the criteria of Practice D are generally considered capable of competent and objective testing.

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. Soil testing Back to Results Print.