ASTM WK40065

    Revision of C219 - 07a Standard Terminology Relating to Hydraulic Cement

    (What is a Work Item?)

    Active Standard: C219 - 14a

    Developed by Subcommittee: C01.91 | Committee C01 | Contact Staff Manager


    1. Rationale

    The definition of equivalent alkalies could be improved by changing the words the total to read a weighted average. The word total implies a simple sum of the Na2O and K2O contents whereas the calculation provides a molecular weight ratio of the sum. A change to the discussion is also proposed, to insert the word weight to clarify that the molecular weight ratio is what the coefficient 0.658 refers to.


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    Work Item Status

    Date Initiated:

    Technical Contact:
    James Hicks

    Draft Under Development