ASTM WK42585

    Revision of C311 / C311M - 13 Standard Test Methods for Sampling and Testing Fly Ash or Natural Pozzolans for Use in Portland-Cement Concrete

    (What is a Work Item?)

    Active Standard: C311 / C311M - 13

    Developed by Subcommittee: C09.24 | Committee C09 | Contact Staff Manager


    1. Rationale

    The Soundness test method section of C311 currently directs users to prepare a test specimen of 25 parts ash to 100 parts cement, the intent of the language is to express that the fly ash or natural pozzolan constitute 20% by mass of the cementitious material to be used for the soundness test. However, the current language may lead to an incorrect interpretation; the task group desires to change language to reflect its intent.


    fly ash; natural pozzolan;
    Citing ASTM Standards
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    Work Item Status

    Date Initiated:

    Technical Contact:
    Jorge Tercero


    C09.24 (14-01)

    Withdrawn From Balloting