• ASTM D 4643 : 2008

    Superseded A superseded Standard is one, which is fully replaced by another Standard, which is a new edition of the same Standard.
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    Standard Test Method for Determination of Water (Moisture) Content of Soil by Microwave Oven Heating

    Available format(s):  Hardcopy, PDF

    Superseded date:  11-11-2014

    Language(s):  English

    Published date:  01-01-2008

    Publisher:  American Society for Testing and Materials

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    1.1 This test method outlines procedures for determining the water (moisture) content of soils by incrementally drying soil in a microwave oven.

    1.2 This test method can be used as a substitute for Test Method D 2216 when more rapid results are desired to expedite other phases of testing and slightly less accurate results are acceptable.

    1.3 When questions of accuracy between this test method and Test Method D 2216 arise, Test Method D 2216 shall be the referee method.

    1.4 This test method is applicable for most soil types. 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 deposits), this test method may not yield reliable water content values.

    1.5 The values stated in SI units are to be regarded as the standard. No other units of measurement are included in this test method.

    1.6 Refer to Practice D 6026 for guidance concerning the use of significant figures. 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. 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 0.1 %. 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 0.1/100 = 1.001, a value with four significant digits. While, if three significant digits are acceptable, then the water content can be recorded to the nearest 1 %.

    1.7 This standard does not purport to address all of the safety concerns, if any, associated with its use. 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. See Section 7.

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    Committee D 18
    Document Type Test Method
    Publisher American Society for Testing and Materials
    Status Superseded
    Superseded By
    Supersedes

    Standards Referenced By This Book - (Show below) - (Hide below)

    ASTM D 7698 : 2011 : REV A Standard Test Method for In-Place Estimation of Density and Water Content of Soil and Aggregate by Correlation with Complex Impedance Method
    ASTM D 5874 : 2016 Standard Test Methods for Determination of the Impact Value (IV) of a Soil
    ASTM E 3163 : 2018 Standard Guide for Selection and Application of Analytical Methods and Procedures Used during Sediment Corrective Action
    ASTM D 2937 : 2017 : EDT 2 Standard Test Method for Density of Soil in Place by the Drive-Cylinder Method
    ASTM D 2167 : 2015 Standard Test Method for Density and Unit Weight of Soil in Place by the Rubber Balloon Method
    ASTM D 8167/D8167M : 2018 : REV A Standard Test Method for In-Place Bulk Density of Soil and Soil-Aggregate by a Low-Activity Nuclear Method (Shallow Depth)
    ASTM D 2216 : 2019 Standard Test Methods for Laboratory Determination of Water (Moisture) Content of Soil and Rock by Mass
    ASTM D 3839 : 2014 Standard Guide for Underground Installation of “Fiberglass” (Glass-Fiber Reinforced Thermosetting-Resin) Pipe
    ASTM D 6758 : 2018 Standard Test Method for Measuring Stiffness and Apparent Modulus of Soil and Soil-Aggregate In-Place by Electro-Mechanical Method
    ASTM D 7876 : 2013 : R2018 Standard Practice for Practice for Sample Decomposition Using Microwave Heating (With or Without Prior Ashing) for Atomic Spectroscopic Elemental Determination in Petroleum Products and Lubricants
    ASTM D 5890 : 2019 Standard Test Method for Swell Index of Clay Mineral Component of Geosynthetic Clay Liners
    ASTM D 5126 : 2016 : EDT 1 Standard Guide for Comparison of Field Methods for Determining Hydraulic Conductivity in Vadose Zone
    ASTM D 6938 : 2017 : REV A Standard Test Methods for In-Place Density and Water Content of Soil and Soil-Aggregate by Nuclear Methods (Shallow Depth)
    ASTM D 7830/D7830M : 2014 Standard Test Method for In-Place Density (Unit Weight) and Water Content of Soil Using an Electromagnetic Soil Density Gauge
    ASTM D 1556/D1556M : 2015 : EDT 1 Standard Test Method for Density and Unit Weight of Soil in Place by Sand-Cone Method
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