ASTM D4644 - 08

    Standard Test Method for Slake Durability of Shales and Similar Weak Rocks

    Active Standard ASTM D4644 | Developed by Subcommittee: D18.12

    Book of Standards Volume: 04.08


      Format Pages Price  
    PDF 4 $38.00   ADD TO CART
    Hardcopy (shipping and handling) 4 $38.00   ADD TO CART
    Standard + Redline PDF Bundle 8 $45.60   ADD TO CART


    Significance and Use

    The test method is used to estimate qualitatively the durability of weak rocks in the service environment.(1-7).

    This test method is used to assign quantitative durability values to weak rocks. A primary example is the Franklin Rating System (1).

    Note 1—The quality of the result produced by this standard is dependent on the competence of the personnel performing it, and the suitability of the equipment and facilities used. Agencies that meet the criteria of Practice D 3740 are generally considered capable of competent and objective testing, sampling, inspection, and so forth. Users of this standard are cautioned that compliance with Practice D 3740 does not in itself assure reliable results. Reliable results depend on many factors; Practice D 3740 provides a means of evaluating some of those factors.

    1. Scope

    1.1 This test method covers the determination of the slake durability index of a shale or other similar rock after two drying and wetting cycles with abrasion.

    1.2 All observed and calculated values shall conform to the guidelines for significant digits and rounding established in Practice D 6026.

    1.2.1 The method used to specify how data are collected, calculated, or recorded in this standard is not directly related to the accuracy to which the data can be applied in design or other uses, or both. How one applies the results obtained using this standard is beyond its scope.

    1.3 The values stated in SI units are to be regarded as standard. The values given in parentheses are mathematical conversions to inch-pound units that are provided for information only and are not considered standard.

    1.4 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.


    2. Referenced Documents (purchase separately) The documents listed below are referenced within the subject standard but are not provided as part of the standard.

    ASTM Standards

    D653 Terminology Relating to Soil, Rock, and Contained Fluids

    D2113 Practice for Rock Core Drilling and Sampling of Rock for Site Investigation

    D2216 Test Methods for Laboratory Determination of Water (Moisture) Content of Soil and Rock by Mass

    D3740 Practice for Minimum Requirements for Agencies Engaged in Testing and/or Inspection of Soil and Rock as Used in Engineering Design and Construction

    D5079 Practices for Preserving and Transporting Rock Core Samples

    D6026 Practice for Using Significant Digits in Geotechnical Data

    E11 Specification for Woven Wire Test Sieve Cloth and Test Sieves


    ICS Code

    ICS Number Code 91.100.15 (Mineral materials and products)

    UNSPSC Code

    UNSPSC Code 11111600(Stone)


    Referencing This Standard

    DOI: 10.1520/D4644-08

    ASTM International is a member of CrossRef.

    Citation Format

    ASTM D4644-08, Standard Test Method for Slake Durability of Shales and Similar Weak Rocks, ASTM International, West Conshohocken, PA, 2008, www.astm.org

    Back to Top