ASTM WK46886

    Revision of C595 / C595M - 14 Standard Specification for Blended Hydraulic Cements

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    Active Standard: C595 / C595M - 14

    Developed by Subcommittee: C01.10 | Committee C01 | Contact Staff Manager



    WK46886

    1. Rationale

    A comment on a previous ballot questioned whether the current 5% tolerance on ingredients for blended cement ingredients was appropriate, particularly for materials in low quantities. An example was given of a Type IP cement made with a silica fume content of 4%. The 5% (by mass of finished cement) limit currently in C595 and M 240 means that the cement could contain between 0% and 9% silica fume and still be considered the same product, even though cements with 9% or 0% silica fume might be expected to have significantly different performance characteristics. This proposal includes revised limits for variation in ingredient quantity.


    Keywords

    blended hydraulic cement; fly ash cement; hydraulic cement; portland blast-furnace slag cement; portland-limestone cement; portland-pozzolan cement; pozzolanic cement; slag; granulated blast furnace slag;
    Citing ASTM Standards
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    Work Item Status

    Date Initiated:
    07-30-2014

    Technical Contact:
    Gregory Daderko

    Item:
    001

    Ballot:
    C01.10 (14-02)

    Status:
    Negative Votes Need Resolution