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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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.

ASTM D 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. 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 v4643 and the suitability of the equipment and facilities used.

Soil testing Lab Services: This method is used for occasions when asttm more expedient method is desirable for water content determinations. 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 ast, dissolved solids such as salt in the case of marine depositsthis test method may not yield reliable water content values.

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 adtm Practice D does not in itself ensure reliable testing. Agencies that r4643 the criteria of Practice D are generally considered capable of competent and objective testing. Link to Active This link will always route to the current Active version of the standard.

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This procedure is repeated until the mass becomes nearly constant. Reliable results depend 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 limitations prior to use. Therefore, the procedure recommended in this test method is meant to serve as a guide when using the microwave oven.

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

Some microwave ovens have settings at less than full power, which can also be used to reduce overheating. No other units of measurement are included in this test method. This occurs since 1 plus the water aztm not in percent will have four significant digits regardless of what the value of the water content is; that is, 1 plus 0.

Historical Version s – view previous versions of standard. 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.

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. Request Quote Client Login. For more information, contact: 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 example, if four asmt digits are required in any of the above calculations, then the water content has to be recorded to the nearest 0. 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 method may not be appropriate when highly accurate results are required.

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Soil testing Back to Results Print.

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 d46643 within the subject standard but are not provided as part of the standard. Link to Active This link will always route to the current Active version of the standard. While not eliminating this satm, the incremental drying procedure described in this test method will minimize its effects. The quality of the results produced by this test method is dependent awtm the competence of the personnel performing it and the suitability of the equipment and facilities used.

A moist soil specimen is placed in a suitable container and its mass is determined. 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 Degregation of individual particles may occur, along with vaporization or chemical transition.

Active Risk Management

atm Users of this test method are cautioned that compliance with Practice D does not in itself ensure reliable results. Larger size particles can be tested; however, care must be taken because of the increased chance of particle shattering. In addition, they are representative of the significant digits that generally should be retained. It is therefore recommended that samples used in this test method not be used for other tests subsequent to drying.