ASTM C474-02

Standard Test Methods for Joint Treatment Materials for Gypsum Board Construction

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 C 475/C 475M.
1.1.2 The joint treatment material described in this standard are for use with gypsum board installed in accordance with Specification C 840.
1.2 The test methods appear in the following order:SectionJoint Compound Tests:Viscosity Shrinkage Check Cracking Putrefaction  Joint Tape Tests:Tensile Strength Width Thickness Paper Joint Tape TestsDimensional StabilityAssemblages of Paper Joint Tape and Joint Compound:Bond of Paper Joint Tape to Joint Compound Cracking of Joint Compound at Tape Edges Glass-Mesh Joint Tape TestSkewness
1.3 The values stated in inch-pound units are to be regarded as the standard. The SI (metric) values given in brackets are approximate and are provided for information purposes only.
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.

General Information

• Status: Historical
• Publication Date: 09-Dec-2002
• ICS: 91.060.10 - Walls. Partitions. Facades
• ICS: 91.100.10 - Cement. Gypsum. Lime. Mortar
• Technical Committee: C11 - Gypsum and Related Building Materials and Systems
• Drafting Committee: C11.02 - Specifications and Test Methods for Accessories and Related Products

Relations

• Replaces: ASTM C474-01 - Standard Test Methods for Joint Treatment Materials for Gypsum Board Construction
• Effective Date: 10-Dec-2002
• Replaced By: ASTM C474-05 - Standard Test Methods for Joint Treatment Materials for Gypsum Board Construction
• Effective Date: 01-Jan-2005
• Referred By: ASTM C475/C475M-17(2022) - Standard Specification for Joint Compound and Joint Tape for Finishing Gypsum Board
• Effective Date: 10-Dec-2002

Standards Content (Sample)

NOTICE: This standard has either been superseded and replaced by a new version or withdrawn.
Contact ASTM International (www.astm.org) for the latest information
Designation:C474–02
Standard Test Methods for
1
Joint Treatment Materials for Gypsum Board Construction
This standard is issued under the fixed designation C 474; the number immediately following the designation indicates the year of
original adoption or, in the case of revision, the year of last revision. A number in parentheses indicates the year of last reapproval. A
superscript epsilon (e) indicates an editorial change since the last revision or reapproval.
1. Scope* C11 Terminology Relating to Gypsum and Related Build-
2
ing Materials and Systems
1.1 These test methods cover the physical testing of joint
2
C36 Specification for Gypsum Wallboard
compound, paper joint tape, glass-mesh joint tape, and an
C 472 Test Methods for Physical Testing of Gypsum, Gyp-
assembly of joint compound and paper joint tape.
2
sum Plasters, and Gypsum Concrete
1.1.1 Joint treatment materials are specified in Specification
C 475/C 475M Specification for Joint Compound and Joint
C 475/C 475M.
2
Tape for Finishing Gypsum Board
1.1.2 The joint treatment material described in this standard
C 840 Specification for Application and Finishing of Gyp-
are for use with gypsum board installed in accordance with
2
sum Board
Specification C 840.
D 685 Practice for Conditioning Paper and Paper Products
1.2 The test methods appear in the following order:
3
for Testing
Section
D 828 Test Method for Tensile Properties of Paper and
Joint Compound Tests:
Viscosity 5
Paperboard Using-Constant Rate-of-Elongation Appara-
Shrinkage 6
3
tus
Check Cracking 7
D 3882 Test Method for Bow and Skew in Woven and
Putrefaction 8
4
Joint Tape Tests:
Knitted Fabrics
Tensile Strength 9
5
E 100 Specification for ASTM Hydrometers
Width 10
2.2 TAPPI Standard:
Thickness 11
Paper Joint Tape Tests
T 411 Thickness (Caliper) of Paper, Paperboard, and Com-
Dimensional Stability 12
6
bined Board
Assemblages of Paper Joint Tape and Joint Compound:
Bond of Paper Joint Tape to Joint Compound 13
3. Terminology
Cracking of Joint Compound at Tape Edges 14
Glass-Mesh Joint Tape Test
3.1 Definitions—For definitions of terms relating to gyp-
Skewness 15
sum, see TerminologyC11.
1.3 The values stated in inch-pound units are to be regarded
3.2 Definitions of Terms Specific to This Standard:
as the standard. The SI (metric) values given in brackets are
3.2.1 bond, n—in joint systems, the quality of adhesion
approximate and are provided for information purposes only.
between the paper joint tape and joint compound.
1.4 The text of this standard references notes and footnotes
3.2.1.1 Discussion—A 0 % bond means that no paper fiber
that provide explanatory material. These notes and footnotes
is adhering to the joint compound. A 100 % bond means that
(excluding those in tables and figures) shall not be considered
there is cohesive failure of the paper joint tape.
as requirements of the standard.
3.2.2 check cracking, n—in joint systems, short, narrow
1.5 This standard does not purport to address all of the
cracks randomly oriented in the surface of the dried joint
safety concerns, if any, associated with its use. It is the
compound.
responsibility of the user of this standard to establish appro-
3.2.3 joint compound, powder, n—Adrying-type or setting-
priate safety and health practices and determine the applica-
type cementitious material to be mixed with water.
bility of regulatory limitations prior to use.
3.2.4 joint compound, ready-mix, n—A drying-type cemen-
titious material that is factory mixed in ready-to-use form.
2. Referenced Documents
2.1 ASTM Standards:
1 2
These test methods are under the jurisdiction of ASTM Committee C11 on Annual Book of ASTM Standards, Vol 04.01.
3
Gypsum and Related Building Materials and Systems and are the direct responsi- Annual Book of ASTM Standards, Vol 15.09.
4
bility of Subcommittee C11.02 on Specifications and Test Methods for Accessories Annual Book of ASTM Standards, Vol 07.02.
5
and Related Products. Annual Book of ASTM Standards, Vol 14.03.
6
Current edition approved Dec. 10, 2002. Published February 2003. Originally Available from TechnicalAssociation of the Pulp and Paper Industry, Technol-
approved in 1961. Last previous edition approved in 2001 as C 474 – 01. ogy Park, P.O. Box 105113, Atlanta, GA 30348.
*ASummary of Changes section appears at the end of this standard.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.
1

---------------------- Page: 1 ----------------------
C474–02
4. Specimen Preparation
Upper pin from bottom of shaft 0.313 6 0.015 [7.95 6 0.38]
Lower pin from bottom of shaft 0.125 6 0.015 [3.28 6 0.38]
4.1 Joint Compound, Powder:
4.1.1 Mix 300 g of joint compound, powder, with approxi- 5.5 Procedure:
5.5.1 Fill the viscosity container with the mixed specimen
mately 150 to 160 mL of water.
4.1.2 Allow
...