ASTM C472 - 99(2014)

    Standard Test Methods for Physical Testing of Gypsum, Gypsum Plasters and Gypsum Concrete

    Active Standard ASTM C472 | Developed by Subcommittee: C11.01

    Book of Standards Volume: 04.01

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    These test methods cover the physical testing of gypsum, gypsum plasters, and gypsum concrete. Test methods are detailed for the following: precautions for physical tests, reagents and materials, free water, fineness, normal consistency of gypsum plaster and gypsum concrete, setting time, setting time (temperature rise method), compressive strength, and density. Materials include distilled or deionized water and standard sand. For each test method, the following are specified: significance and use, apparatus, and procedure.

    This abstract is a brief summary of the referenced standard. It is informational only and not an official part of the standard; the full text of the standard itself must be referred to for its use and application. ASTM does not give any warranty express or implied or make any representation that the contents of this abstract are accurate, complete or up to date.

    1. Scope

    1.1 These test methods cover the physical testing of gypsum, gypsum plasters, and gypsum concrete.

    1.2 The test methods appear in the following sections:




    Precautions for Physical Tests


    Reagents and Materials


    Free Water




    Normal Consistency of Gypsum Plaster


    Normal Consistency of Gypsum Concrete


    Setting Time


    Setting Time (Temperature Rise Method)


    Compressive Strength




    1.3 The values regarded as the standard are either in inch-pound units or SI (metric). The values stated first shall be regarded as the standard. Values following in parentheses are approximate and are provided for information purposes only.

    1.4 The text of this standard references notes and footnotes which provide explanatory material. These notes and footnotes (excluding those in tables and figures) are not requirements of the standard.

    1.5 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 determine the applicability of regulatory limitations prior to use.For a specific precautionary statement, see X1.2.1.

    2. Referenced Documents (purchase separately) The documents listed below are referenced within the subject standard but are not provided as part of the standard.

    ASTM Standards

    C11 Terminology Relating to Gypsum and Related Building Materials and Systems

    C778 Specification for Sand

    E11 Specification for Woven Wire Test Sieve Cloth and Test Sieves

    ICS Code

    ICS Number Code 91.100.10 (Cement. Gypsum. Lime. Mortar)

    UNSPSC Code

    UNSPSC Code 30111701(Gypsum plaster); 30111500(Concrete and mortars)

    DOI: 10.1520/C0472

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