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.

Author: Faejora Kigarr
Country: Guyana
Language: English (Spanish)
Genre: Software
Published (Last): 24 August 2004
Pages: 487
PDF File Size: 16.95 Mb
ePub File Size: 14.3 Mb
ISBN: 887-2-27828-497-5
Downloads: 1306
Price: Free* [*Free Regsitration Required]
Uploader: Malam

It is beyond the scope of this standard to consider significant digits used in analysis methods for engineering design. Agencies that meet the criteria of Practice D are generally considered capable of competent and objective testing. It is therefore recommended that samples used in this test method not be used for other tests subsequent to drying.

Agencies that meet the criteria of Practice D are generally considered capable of competent and objective testing. Performance of the test method utilizing another system of units shall not be considered non-conformance. Soil testing Lab Services: Soil testing Back to Results Print. Referenced Documents purchase separately The documents listed below are referenced within the subject standard but are not provided as part of the standard. Active view current version of standard.

This test method is best suited for minus 4 sized material. 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.

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

Request Quote Client Login. No other units of measurement are included in this test method. Therefore, the procedure recommended in this test method is meant to serve as a guide when using the microwave oven. 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 B98 PDF

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

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.

Some microwave ovens have settings at less than full power, which can also be used to reduce overheating. 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.

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. 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.

Reliable testing depends on many factors; Practice D provides a means of evaluating some of those factors. 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: Larger size particles can be tested; however, care must be taken because of the increased chance of particle shattering.

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

ASTM D4643

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. This procedure is repeated until the mass becomes nearly constant. Link f4643 Active This link will always route to the current Active version of the standard.

  AVERVISION SPB 370 PDF

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. This is especially important if the water content will be used to calculate other relationships such as r4643 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.

The use of a microwave oven is one such method. Larger size particles can be tested; however, care must be taken because of the increased chance of particle zstm. 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.

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. 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.

Users of this test method are cautioned that compliance with Practice D does not in itself ensure reliable testing. For Individuals with needing special d46643 for disabilities or limited English proficiency Please contact our Title VI specialist at This method is used for occasions when a more expedient method is desirable for water content determinations.

ASTM D Standard

Degregation of individual particles may occur, along with vaporization or chemical transition. Link to Active This link will always route to the current Active version of the standard. In addition, they are representative of the significant digits that generally should be retained.

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