ASTM WK42122

    New Test Method for Shear testing of bulk solids using the Freeman Technology FT4 Powder Rheometer Shear Cell

    (What is a Work Item?)

    Developed by Subcommittee: D18.24 | Committee D18 | Contact Staff Manager


    1. Scope

    This method covers the apparatus and procedures for measuring the incipient failure properties of a powder or other bulk solid material as a function of the normal stress for a given level of consolidation. This will allow the further determination of the unconfined yield strength, internal friction angles, cohesion, Flow Function, major principal stress and wall friction angle (with the appropriate wall coupon fitted to the correct accessory).


    Bulk solid; effective angle of internal friction; effective yield locus; flow function; flowability; Freeman Technology, FT4 Powder Rheometer; internal friction angle; wall friction angle; powder; rotational shear cell; Unconfined Yield Strength; wall friction

    The title and scope are in draft form and are under development within this ASTM Committee.

    Citing ASTM Standards
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    Work Item Status

    Date Initiated:

    Technical Contact:
    Tim Freeman


    COS (15-02)

    Ballot Item Approved as D7891-2015 and Pending Publication