• ASTM D 4647/D4647M : 2013:R2020

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    Standard Test Methods for Identification and Classification of Dispersive Clay Soils by the Pinhole Test

    Available format(s):  Hardcopy, PDF

    Language(s):  English

    Published date:  02-01-2020

    Publisher:  American Society for Testing and Materials

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    1.1This test method presents a direct, measurement of the dispersibility and consequent colloidal erodibility of clay soils by causing water to flow through a small hole punched in a specimen. The results of the tests are qualitative and provide general guidance regarding dispersibility and erodibility. This test method is complemented by Test Method D4221.

    1.2This 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).2

    1.3Three alternative procedures for classifying the dispersibility of clay soils are provided as follows:

    1.3.1Method 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).

    1.3.2Method B classifies soils into three categories of dispersiveness as: dispersibility (D), slightly dispersive (SD), and nondispersive (ND).

    1.4All 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, health, and environmental practices and determine the applicability of regulatory limitations prior to use.

    1.7This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.

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

    Standards Referencing This Book - (Show below) - (Hide below)

    ASTM D 2487 : 2017 : EDT 1 Standard Practice for Classification of Soils for Engineering Purposes (Unified Soil Classification System)
    ASTM D 653 : 2007 Standard Terminology Relating to Soil, Rock, and Contained Fluids
    ASTM D 698 : 2000 Standard Test Methods for Laboratory Compaction Characteristics of Soil Using Standard Effort (12,400 ft-lbf/ft3 (600 kN-m/m3))
    ASTM D 6026 : 2013 Standard Practice for Using Significant Digits in Geotechnical Data
    ASTM D 698 : 2012 : R2021 Standard Test Methods for Laboratory Compaction Characteristics of Soil Using Standard Effort (12,400 ft-lbf/ft3 (600 kN-m/m3))
    ASTM D 653 : 2022 Standard Terminology Relating to Soil, Rock, and Contained Fluids
    ASTM D 4753 : 1995 Standard Specification for Evaluating, Selecting, and Specifying Balances and Scales for Use in Soil, Rock, and Construction Materials Testing
    ASTM D 653 : 2020 : EDT 1 Standard Terminology Relating to Soil, Rock, and Contained Fluids
    ASTM D 653 : 2021 : REV A Standard Terminology Relating to Soil, Rock, and Contained Fluids
    ASTM D 653 : 2021 Standard Terminology Relating to Soil, Rock, and Contained Fluids
    ASTM D 653 : 2021 : REV B Standard Terminology Relating to Soil, Rock, and Contained Fluids
    ASTM D 6026 : 1996 : EDT 1 Standard Practice for Using Significant Digits in Geotechnical Data
    ASTM D 6026 : 2021 Standard Practice for Using Significant Digits and Data Records in Geotechnical Data
    ASTM D 2487 : 2017 Standard Practice for Classification of Soils for Engineering Purposes (Unified Soil Classification System)
    ASTM D 698 : 2012 : EDT 2 Standard Test Methods for Laboratory Compaction Characteristics of Soil Using Standard Effort (12 400 ft-lbf/ft3 (600 kN-m/m3))
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