ASTM WK65474

    Revision of C1778 - 16 Standard Guide for Reducing the Risk of Deleterious Alkali-Aggregate Reaction in Concrete

    (What is a Work Item?)

    Active Standard: C1778 - 20

    Developed by Subcommittee: C09.50 | Committee C09 | Contact Staff Manager



    WK65474


    Keywords

    AAR; ACR; alkali-aggregate reaction; alkali-carbonate reaction; alkali-silica reaction; ASR; concrete; concrete durability; laboratory testing; pozzolans; reactive aggregates; risk evaluation; supplementary cementitious materials;;

    Rationale

    Many new supplementary cementing materials are emerging and this revision will require the new SCMs to be evaluated through the concrete prism test first followed by the quicker mortar bar test in the future if it passes the concrete prism test. In addition SCMs with high alkali contents are now mentioned by name in Note 11.

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    Work Item Status

    Date Initiated:
    10-22-2018

    Technical Contact:
    Thano Drimalas

    Status:
    Draft Under Development