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



    WK69563


    Keywords

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

    Rationale

    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.

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    Work Item Status

    Date Initiated:
    08-15-2019

    Technical Contact:
    Craig Walloch

    Item:
    011

    Ballot:
    C15 (19-02)

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