ASTM C474 - 13

    Standard Test Methods for Joint Treatment Materials for Gypsum Board Construction

    Active Standard ASTM C474 | Developed by Subcommittee: C11.02

    Book of Standards Volume: 04.01


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    Abstract

    These test methods cover the physical testing of joint treatment materials such as joint compound, paper joint tape, glass-mesh joint tape, and an assembly of joint compound and paper joint tape. These materials are used in gypsum board construction. The test methods are detailed for the following: joint compound testsfor viscosity, shrinkage, check cracking, and putrefaction; joint tape testsfor tensile strength, width, and thickness; paper joint tape testsfor dimensional stability; assemblages of paper joint tape and joint compoundfor bond of paper joint tape to joint compound and cracking of joint compound at tape edges; and glass-mesh joint tape testfor skewness.

    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 joint compound, paper joint tape, glass-mesh joint tape, and an assembly of joint compound and paper joint tape.

    1.1.1 Joint treatment materials are specified in Specification C475/C475M.

    1.1.2 The joint treatment material described in this standard are for use with gypsum board installed in accordance with Specification C840.

    1.2 The test methods appear in the following order:

     

    Section

    Joint Compound Tests:

     

      Viscosity

     5

      Shrinkage

     6

      Check Cracking

     7

      Putrefaction

     8

    Joint Tape Tests:

     

      Tensile Strength

     9

      Width

    10

      Thickness

    11

    Paper Joint Tape Tests

     

      Dimensional Stability

    12

    Assemblages of Paper Joint Tape and Joint Compound:

     

      Bond of Paper Joint Tape to Joint Compound

    15

      Cracking of Joint Compound at Tape Edges

    14

    Glass-Mesh Joint Tape Test

     

      Skewness

    13


    1.3 The values stated in inch-pound units are to be regarded as standard. The values given in brackets are mathematical conversions to SI units that are provided for information only and are not considered standard.

    1.4 The text of this standard references notes and footnotes that provide explanatory material. These notes and footnotes (excluding those in tables and figures) shall not be considered as 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.


    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

    C472 Test Methods for Physical Testing of Gypsum, Gypsum Plasters and Gypsum Concrete

    C475/C475M Specification for Joint Compound and Joint Tape for Finishing Gypsum Board

    C840 Specification for Application and Finishing of Gypsum Board

    C1396/C1396M Specification for Gypsum Board

    D685 Practice for Conditioning Paper and Paper Products for Testing

    D828 Test Method for Tensile Properties of Paper and Paperboard Using Constant-Rate-of-Elongation Apparatus

    D3699 Specification for Kerosine

    D3882 Test Method for Bow and Skew in Woven and Knitted Fabrics

    E100 Specification for ASTM Hydrometers

    E177 Practice for Use of the Terms Precision and Bias in ASTM Test Methods

    E691 Practice for Conducting an Interlaboratory Study to Determine the Precision of a Test Method

    TAPPI Standard

    T‚ÄČ411 Thickness (Caliper) of Paper, Paperboard, and Combined Board Available from Technical Association of the Pulp and Paper Industry, Technology Park, P.O. Box 105113, Atlanta, GA 30348.


    ICS Code

    ICS Number Code 91.060.10 (Walls. Partitions. Facades); 91.100.10 (Cement. Gypsum. Lime. Mortar)

    UNSPSC Code

    UNSPSC Code 30161509(Gypsum board)


    DOI: 10.1520/C0474

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