D854.5741-1 - Designation: D 854 06e1 Standard Test Methods...

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Designation: D 854 – 06 e 1 Standard Test Methods for SpeciFc Gravity of Soil Solids by Water Pycnometer 1 This standard is issued under the fxed designation D 854; the number immediately Following the designation indicates the year oF original adoption or, in the case oF revision, the year oF last revision. A number in parentheses indicates the year oF last reapproval. A superscript epsilon ( e ) indicates an editorial change since the last revision or reapproval. This standard has been approved for use by agencies of the Department of Defense. e 1 N OTE —The equation in ±ootnote B in Table 1 was corrected editorially in April 2006. 1. Scope* 1.1 These test methods cover the determination oF the specifc gravity oF soil solids that pass the 4.75-mm (No. 4) sieve, by means oF a water pycnometer. When the soil contains particles larger than the 4.75-mm sieve, Test Method C 127 shall be used For the soil solids retained on the 4.75-mm sieve and these test methods shall be used For the soil solids passing the 4.75-mm sieve. 1.1.1 Soil solids For these test methods do not include solids which can be altered by these methods, contaminated with a substance that prohibits the use oF these methods, or are highly organic soil solids, such as fbrous matter which ²oats in water. N OTE 1—The use oF Test Method D 5550 may be used to determine the specifc gravity oF soil solids having solids which readily dissolve in water or ²oat in water, or where it is impracticable to use water. 1.2 Two methods For perForming the specifc gravity are provided. The method to be used shall be specifed by the requesting authority, except when testing the types oF soils listed in 1.2.1 1.2.1 Method A —Procedure For Moist Specimens, described in 9.2 . This procedure is the preFerred method. ±or organic soils; highly plastic, fne grained soils; tropical soils; and soils containing halloysite, Method A shall be used. 1.2.2 Method B —Procedure For Oven-Dry Specimens, de- scribed in 9.3 . 1.3 All observed and calculated values shall conForm to the guidelines For signifcant digits and rounding established in Practice D 6026 . 1.3.1 The procedures used to speciFy how data are collected/ recorded and calculated in this standard are regarded as the industry standard. In addition, they are representative oF the signifcant digits that generally should be retained. The proce- dures used do not consider material variation, purpose For obtaining the data, special purpose studies, or any consider- ations For the user’s objectives; and it is common practice to increase or reduce signifcant digits oF reported data to be commensurate with these considerations. It is beyond the scope oF these test methods to consider signifcant digits used in analysis methods For engineering design. 1.4 Units —The values stated in SI units are to be regarded as standard. The units oF measurement in the parentheses are For inFormational purposes only.
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This note was uploaded on 07/06/2009 for the course CEC 351 taught by Professor Lawrence during the Spring '09 term at Universidad Nacional de Asuncion.

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D854.5741-1 - Designation: D 854 06e1 Standard Test Methods...

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