ASTM WK73382

    New Test Method for Standard Test Method for Potential Expansion of Steel Slag from Hydration Reactions by Autoclave

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    Developed by Subcommittee: D04.51 | Committee D04 | Contact Staff Manager


    1. Scope

    These test methods cover the determination of potential volume expansion of steel slags that contain components susceptible to hydration and consequent volume increase, such as the free calcium and magnesium oxides. While similar in design, this method is based upon the Cement Autoclave procedure, ASTM C-150, and the California Bearing Ration procedure, ASTM D-1883. This is an aggressive test that can detect both calcium and magnesium expansion potentials. The procedure is also a rapid method typically completed within 24-hours.


    aggregates; expansion; autoclave; hydration reaction; steel slag


    The current test method (D-4792) is not adequate for detecting magnesium hydration reactions in steel slags. This method exhibits a heightened severity in order to show the potential for expansion, while reducing testing time to 24 hours.

    The title and scope are in draft form and are under development within this ASTM Committee.

    Citing ASTM Standards
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    Work Item Status

    Date Initiated:

    Technical Contact:
    John Yzenas

    Draft Under Development