ASTM WK40630

    Work Item: ASTM WK40630 - Revision of C1702 - 09a Standard Test Method for Measurement of Heat of Hydration of Hydraulic Cementitious Materials Using Isothermal Conduction Calorimetry

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    Active Standard: C1702 - 13a

    Developed by Subcommittee: C01.26 | Committee C01 | Contact Staff Manager



    1. Rationale

    The recent Round Robin tests confirmed that while most users have a good handle of the Gains calibration, several users suffer from inadequate Baseline calibration, despite the current wording in section 6.2.1 Instrument Stability in ASTM C1702. Furthermore, while section 6.2.1 Instrument Stability does provide for minimum requirements on the calorimeter used, it does not address any baseline error caused by variations in the ambient conditions during testing. Rather than specifying tighter laboratory conditions, the subcommittee feels that a simple base line verification test should be mandated. This test will address the net effect of instrument stability as well as correct baseline calibration as affected by the given test conditions. Furthermore, changes to 8 Procedure are proposed to ensure the calorimeter is at thermal equilibrium prior to testing.


    Keywords

    heat of hydration; hydraulic cement; isothermal conduction calorimetry; portland cement; Calorimetry; Heat of hydration; Hydraulic cement; Portland cement ;
    Citing ASTM Standards
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    Work Item Status

    Date Initiated:
    01-25-2013

    Technical Contact:
    Paul Sandberg

    Status:
    Draft Under Development