ASTM WK38524

    Revision of C192 / C192M - 07 Standard Practice for Making and Curing Concrete Test Specimens in the Laboratory

    (What is a Work Item?)

    Active Standard: C192 / C192M - 13a

    Developed by Subcommittee: C09.61 | Committee C09 | Contact Staff Manager



    WK38524

    1. Rationale

    The apparatus requirements for the vibrator in C192 differ from those in C31 (Standard Practice for Making and Curing Concrete Test Specimens in the Field). Specifically, they differ in the frequency of the vibrator, the requirement for an internal vibrator, and that the vibrator frequency be periodically checked. The purpose of this proposed revision is to align these two standards, due to their similar purposes. The frequency cited in C31 (9,000 vibrations per minute) is used because it is the frequency recommended in Table 5.1 of ACI 309R.


    Keywords

    concrete; cylinders; laboratory; prisms; strength testing;
    Citing ASTM Standards
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    Work Item Status

    Date Initiated:
    07-26-2012

    Technical Contact:
    Michael Kesselmayer

    Status:
    Draft Under Development