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About This Item
Full Description
1.2 This test method and the criteria for evaluating test data are based upon results of several hundred tests on samples collected from embankments, channels, and other areas where clay soils have eroded or resisted erosion in nature.
1.3 Three alternative procedures for classifying the dispersibility of clay soils are provided as follows:1.3.1 Method A and Method C, adapted from Ref 1, classify soils into six categories of dispersiveness as: dispersibility (D1, D2), slight to moderately dispersive (ND4, ND3), and nondispersive (ND2, ND1).
1.3.2 Method B classifies soils into three categories of dispersiveness as: dispersibility (D), slightly dispersive (SD), and nondispersive (ND).
1.4 All observed and calculated values shall conform to the guidelines for significant digits and rounding established in Practice D6026.
1.5Units - The values stated in either SI units or inch-pound units are to be regarded separately as standard. The values stated in each system may not be exact equivalents; therefore, each system shall be used independently of the other. Combining values from the two systems may result in non-conformance with the standard.
1.6This 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.
Document History
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ASTM D4647/D4647M-13(2020)
Standard Test Methods for Identification and Classification of Dispersive Clay Soils by the Pinhole Test- Most Recent
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ASTM D4647/D4647M-13
viewing
Standard Test Methods for Identification and Classification of Dispersive Clay Soils by the Pinhole Test- Historical Version
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ASTM D4647-06e1
Standard Test Method for Identification and Classification of Dispersive Clay Soils by the Pinhole Test- Historical Version
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ASTM D4647-06
Standard Test Method for Identification and Classification of Dispersive Clay Soils by the Pinhole Test- Historical Version
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ASTM D4647-93(2006)
Standard Test Method for Identification and Classification of Dispersive Clay Soils by the Pinhole Test- Historical Version
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ASTM D4647-93(1998)e1
Standard Test Method for Identification and Classification of Dispersive Clay Soils by the Pinhole Test- Historical Version