ASTM WK69563

    Revision of C140 / C140M - 18a Standard Test Methods for Sampling and Testing Concrete Masonry Units and Related Units

    (What is a Work Item?)

    Active Standard: C140 / C140M - 18a

    Developed by Subcommittee: C15.03 | Committee C15 | Contact Staff Manager



    absorption; compressive strength; concrete masonry units; density; equivalent thickness; face shell; moisture content; roof paver; web area; webs; web thickness;;


    ASTM C140 contains a sample test worksheet and report to help testing labs. Due to changes in ASTM C90, the specification for CMU, that sample report shows a CMU with a compressive strength below the C90 limit. This ballot proposes to revise the worksheet and report to show compliant test results. Additional changes are proposed to remove the example test dates to reduce the maintenance required for these reports in the future.

    Citing ASTM Standards
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    Work Item Status

    Date Initiated:

    Technical Contact:
    Craig Walloch


    C15 (19-02)

    Ballot Item Approved as C140/C140M-2020 and Pending Publication