ASTM WK50586

    New Practice for Measuring the Electrical Resistance of Fresh Concrete

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    Developed by Subcommittee: C09.60 | Committee C09 | Contact Staff Manager



    WK50586

    1. Scope

    1.1 This practice describes procedures for sampling and measuring the electrical resistance of fresh concrete during setting and subsequent hardening under sealed curing conditions in the laboratory or in the field. 1.2 Units--The values stated in SI units are to be regarded as the standard. No other units of measurement are included in this standard. 1.3 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and to determine the applicability of regulatory limitations prior to use. (WARNING- Fresh hydraulic cementitious mixtures are caustic and may cause chemical burns to skin and tissue upon prolonged exposure.) 1.4 The text of this standard references notes and footnotes that provide explanatory information. These notes and footnotes shall not be considered as requirements of this standard.


    Keywords

    fresh concrete; electrical conductivity; electrical resistance; electrical resistivity; setting time; water-cement ratio

    Rationale

    A variety of equipment from various manufacturers is now available for measuring the electrical resistance of fresh and hardened concrete. Measurements on fresh concrete are concurrently being used for anticipating setting times, estimating w/c, estimating compressive strength, and assuring quality control. Guidance on making proper measurements of electrical resistance on fresh concrete in the form of a standard practice is needed.

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

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    Work Item Status

    Date Initiated:
    06-29-2015

    Technical Contact:
    Asia Shvarzman

    Item:
    014

    Ballot:
    C09 (18-05)

    Status:
    Withdrawn From Balloting

    Item:
    010

    Ballot:
    C09 (16-04)

    Status:
    Withdrawn From Balloting

    Item:
    027

    Ballot:
    C09 (16-03)

    Status:
    Withdrawn From Balloting