ASTM D6464-03a(2017)
(Specification)Standard Specification for Expandable Foam Adhesives for Fastening Gypsum Wallboard to Wood Framing
Standard Specification for Expandable Foam Adhesives for Fastening Gypsum Wallboard to Wood Framing
ABSTRACT
This specification establishes minimum performance requirements for determining strength, aging, and working properties of expandable foam adhesives intended for bonding back surfaces of gypsum wallboards of all thicknesses to wood framing. Minimum physical and performance requirements are specified for all measured properties of adhesives and adhesive bonds. Shear strength, tensile strength, adhesive open assembly time determination, substrate wet-out by adhesive, accelerated adhesive aging, freeze-thaw stability, suitability of a laminating adhesive for vinyl-covered wallboard, suitability for stain resistance for vinyl-covered wallboard, and gap filling tests shall be performed to conform to the specified requirements.
SCOPE
1.1 This specification establishes minimum performance requirements for determining strength, aging, and working properties of expandable foam adhesives intended for bonding back surfaces of gypsum wallboards of all thicknesses to wood framing. Minimum physical and performance requirements are specified for all measured properties of adhesives and adhesive bonds.
1.2 The values stated in inch-pound units are to be regarded as standard. The values given in parentheses are mathematical conversions to SI units that are provided for information only and are not considered 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 determine the applicability of regulatory limitations prior to use.
1.4 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.
General Information
Relations
Standards Content (Sample)
This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the
Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.
Designation: D6464 −03a (Reapproved 2017)
Standard Specification for
Expandable Foam Adhesives for Fastening Gypsum
Wallboard to Wood Framing
This standard is issued under the fixed designation D6464; the number immediately following the designation indicates the year of
original adoption or, in the case of revision, the year of last revision.Anumber in parentheses indicates the year of last reapproval.A
superscript epsilon (´) indicates an editorial change since the last revision or reapproval.
1. Scope ASTM Test Methods
1.1 This specification establishes minimum performance
3. Terminology
requirements for determining strength, aging, and working
properties of expandable foam adhesives intended for bonding
3.1 Definitions—Many terms in this specification are de-
backsurfacesofgypsumwallboardsofallthicknessestowood
fined in Terminology D907.
framing.Minimumphysicalandperformancerequirementsare
3.2 Definitions of Terms Specific to This Standard:
specifiedforallmeasuredpropertiesofadhesivesandadhesive
3.2.1 expandable foam adhesive, n—any polymer that ex-
bonds.
pands during delivery or cure to fill the space between
1.2 The values stated in inch-pound units are to be regarded
substrates.
as standard. The values given in parentheses are mathematical
conversions to SI units that are provided for information only
4. Significance and Use
and are not considered standard.
4.1 This specification applies to expandable foam adhesives
1.3 This standard does not purport to address all of the
used to bond the back surface of gypsum wallboard to
safety concerns, if any, associated with its use. It is the
Douglas-fir dimensional lumber or other lumber species of
responsibility of the user of this standard to establish appro-
equivalent bonding qualities capable of meeting the test
priate safety and health practices and determine the applica-
requirements.
bility of regulatory limitations prior to use.
4.2 The specification establishes the minimum strength
1.4 This international standard was developed in accor-
requirements of the bond for the selected assembly materials.
dance with internationally recognized principles on standard-
ization established in the Decision on Principles for the
4.3 Theadhesiveisnotconsideredasubstituteformechani-
Development of International Standards, Guides and Recom-
calfasteners.Fastenerswillberequiredtorestrictexpansionof
mendations issued by the World Trade Organization Technical
the foam adhesive while it cures. The recommended fastening
Barriers to Trade (TBT) Committee.
schedulemustappearinthemanufacturer’sapplicationinstruc-
tions.
2. Referenced Documents
4.4 The tests are suitable for product performance certifica-
2.1 ASTM Standards:
tion and quality control programs, and can be useful to the
C1396/C1396MSpecification for Gypsum Board
generalpublic,adhesivemanufacturers,distributors,specifiers,
D905Test Method for Strength Properties of Adhesive
architects,contractors,testinglaboratoriesandotherbusinesses
Bonds in Shear by Compression Loading
and professionals.
D907Terminology of Adhesives
4.5 Theresultsdonotincludeallpossibleconditions,which
E4Practices for Force Verification of Testing Machines
may occur during final assembly, but indicate a set of perfor-
E177Practice for Use of the Terms Precision and Bias in
mance characteristics for laboratory controlled bonding vari-
ables.
This specification is under the jurisdiction of ASTM Committee D14 on
Adhesives and is the direct responsibility of Subcommittee D14.70 on Construction
5. Adhesive Physical Property Requirements
Adhesives.
Current edition approved April 1, 2017. Published May 2017. Originally
5.1 Open Assembly Time—These adhesives have a distinct
ε1
approved in 1999. Last previous edition approved in 2009 as D6464-03a (2009) .
open assembly time and this time must be agreed upon by the
DOI: 10.1520/D6464-03AR17.
user and the manufacturer.
For referenced ASTM standards, visit the ASTM website, www.astm.org, or
contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM
5.2 Storage Life—The adhesive shall remain serviceable
Standards volume information, refer to the standard’s Document Summary page on
the ASTM website. and meet all the requirements of this specification for not less
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
D6464 − 03a (2017)
than six months after delivery, when stored in original un-
opened containers at temperatures ranging from 40 to 85°F (4
to 30°C).
6. Adhesive Properties and Performance
6.1 The adhesives shall conform to the requirements sum-
marized in Table 1.
7. Materials and Apparatus for Conducting Tests
7.1 Adhesives—The adhesive shall be an expandable foam
adhesive.
7.2 Gypsum Wallboard— ⁄2 in. (12.7 mm) thick, complying
with Specification C1396/C1396M; the dimensions are speci-
fied in each test.
3 23
7.3 Plywood— ⁄4 or ⁄32 in. (19 or 18.3 mm)-thick U.S.
Product Standard PS-1-95 grade marked stamped, commercial
plywood, Exterior, Group 1 Species, A-A or A-B grade face
FIG. 1 Tensile Strength Test Specimen Assembly
and back veneers. The test specimen dimensions are specified
in each test.
7.9 Vinyl-Covered Wallboard—A manufactured product
1 1 1
consistingofgypsumwallboardwith2milminimumthickness
7.4 Douglas-Fir Lumber—1 ⁄2 by 1 ⁄2 by 3 ⁄2 in. (38 by 38
vinyl overlay bonded to the wallboard front face.
by 89 mm), clear, dry lumber, (moisture content of 8 to 10%),
with the bonding surface free of bark, knots, splits, and pitch.
7.10 1-Pt and 1-Gal Non-Reactive Metal Can.
NOTE 1—The tensile test will use one of the ends of the block as a 7.11 Food Wrap Polyethylene Film—0.8 mil thickness
bonding surface and should be an edge grain face.
sheet.
7.5 Tensile Test Fixture—An assembly of one, 5 by 5 in.
7.12 Steel Mandrel—1 in. (25.4 mm) diameter steel rod or
(127 by 127 mm) by ⁄2 in. (6.35 mm) thick steel plate and two
pipe section with smooth and uniform surface.
1 1 1
6 in. long sections of 1 ⁄2 by 1 ⁄2 (38.1 by 38.1 mm) by ⁄4 in.
7.13 Tension Rod—Asteelrodforconnectingthetensiletest
(6.4 mm) thick steel angles (Fig. 1).
specimen assembly to the test machine.
7.6 Garnet Paper—No. 120 grit, 3/0.
7.14 Testing Machine—Any suitable testing machine that is
7.7 Plywood Shim—4by3 ⁄2in.or4by4in.(101.6by88.9
capable of operation at a constant rate of motion of the
3 23
mm or 101.6 by 101.6 mm) piece of ⁄4-in. (19-mm) or ⁄32-in.
moveable head and has an accuracy of 61% when calibrated
(18.3-mm) thick U.S. Product Standard PS-1-95 grade marked
in accordance with Practices E4 requirements.
stamped,commercialplywood,Exterior,Group1Species,A-A
7.15 CompressionShearTestFixture—Acompression-shear
or A-B grade face and back veneers.
apparatusthatissimilarto,butofalargerscalethanthefixture
7.8 Manila Folder—Plain manila paper, 11 point weight, recommendedinTestMethodD905.Asimilarfixtureisshown
(.011-in. (0.28-mm) thick). in Fig. 2.
TABLE 1 Adhesive Properties and Performance Requirements
Test Method Section Property Condition Requirements
Rate of shear strength 10.1.4 shear strength 24 h at STD. COND. 10 psi (69 kPa) min
10.1.5 shear strength 14 days at STD. COND. 40 psi (276 kPa) min
10.1.6 shear strength 14 days at STD. COND., + cyclic 32 psi (220 kPa) min
lab exposure, + 2 days at STD. COND.
10.1.7 resistance to static load in shear (a) 40 lb (178 N) for 24 h at STD. COND. no bond separation
(b) 20 lb (89 N) for 24 h at 100°F (38°C) no bond separation
Rate of strength development 10.2.2 tensile strength 24 h at STD. COND. 15 psi (103 kPa) min
10.2.2 tensile strength 14 days at STD. COND. 25 psi (172 kPa) min
Adhesive open-time determination 10.3 open time 24 h at STD. COND. 75 % paper transfer, min
Substrate wet-out by adhesive
1. Plywood 10.4.1 wet out spatula applied good wetting property
2. Wallboard 10.4.2 wet out spatula applied good wetting property
Adhesive aging 10.5 accelerated aging 500 h at 158°F (70°C) no cracking or chipping
Freeze thaw stability 10.6 low temperature storage 3 cycles of 24 h at 0°F + 24 h at no change in workability; 10 psi
STD. COND. (69 kPa) shear strength, min
Suitability of a laminating adhesive 10.7 compatibility 24 h at 100°F (38°C) no blistering, vinyl-film
for vinyl-covered wallboard discoloration, or bond failure
Suitability for Stain Resistance for 10.8 staining 1 h at STD. COND. no swelling or discoloration
Vinyl-covered wallboard
Bridging 10.9 gap-filling 48 h at STD. COND. intact adhesive bond line, report
length and paper failure %
D6464 − 03a (2017)
10.1.2 Preparation of Test Assembly—Prepare the test as-
1 3 23
sembly by bondinga4by3 ⁄2 by ⁄4 or ⁄32 in. (102 by 89 by
19 mm) piece of plywood (7.3) to the previously prepared
laminate as follows and shown in Fig. 3.
10.1.2.1 Sand the face of the ⁄4-in. (19-mm) thick plywood
smooth with garnet paper and wipe the sanded surface free of
dust. Drill two pilot holes through the wallboard-plywood
laminate. Use a standard 0.125 in. (3.175 mm) drill bit and
locate each pilot hole at ⁄8-in. (9.5 mm) from the sides and
⁄8-in. (22-mm) from the overlapped end.
10.1.2.2 Apply the adhesive on the sanded surface with the
self-contained delivery system set at the manufacturer’s rec-
ommended bead size. The amount of adhesive should be
sufficient to cover the entire bond area without gaps in the
adhesive.
10.1.2.3 Allow an open time of 30 6 5 s upon completion
of spreading.
10.1.2.4 Squarely position the wallboard-plywood laminate
1 1
on the coated plywood overlapping exactly 2 ⁄2 6 ⁄16 in. (63.5
2 2
mm), thus forming the approximate 10 in. (64.5 cm ) bonded
FIG. 2 Shear Strength Test Specimen Assembly
area (see Fig. 3).
10.1.2.5 Insert six wire spacers (No. 20 gage) at least 2 in.
(51 mm) long into the adhesive bondline joint. Position the
7.16 Wood Screw with Eyelet—#6 by 1 ⁄2 in. (38.1 mm)
spacers so that they are at each end of the test region.With the
long, ⁄8 in. (19.5 mm) inside diameter eyelet.
test specimen positioned horizontally on a firm surface and the
7.17 Scaffolding Nails—6d, double-head, smooth shaft,
wallboard plywood laminate piece on top, install two 6d
0.113-in. (2.870-mm) diameter 2 in. (51 mm) long.
scaffolding nails into the predrilled pilot holes.
NOTE 2—The pilot hole diameter should be slightly larger than the nail
8. Sampling
diameter. This is necessary to prevent the laminate from binding against
8.1 The test adhesive sample size of 1 qt (approximately 1
the nail shaft and interfering with the uniform compression at the bond
line. Carefully and uniformly set the nails into the lower plywood piece.
L) is a minimum amount to complete one full series of testing.
Drive the nails until the scaffold head initially encounters the wallboard-
The sample is to be handled and stored according to the
plywood laminate.
manufacturers recommendations. The sample is to be repre-
10.1.2.6 After the adhesive has hardened, remove the scaf-
sentative of the final product for which recognition is sought.
folding nails. Remove the spacers and cut away the excess
adhesive from the bonded edges. Do not disturb the alignment
9. Conditioning of Materials and Adhesives
of the bond line.
9.1 Standard condition will be defined as being 73 6 2°F
10.1.3 Shear Strength—Dynamic Loading Determination—
(23 6 1°C) and 50 6 5% relative humidity.
Following the appropriate conditioning, test the specimen in
9.2 Condition the Douglas-fir lumber, plywood, gypsum
shearusingacompression-sheartestfixtureasshowninFig.2.
wallboard, and plain manila file folder for 48 h as described in
The bottom edge of the wallboard-plywood laminate shall rest
9.1. (The Douglas-fir lumber and plywood should not vary by
on a self-aligning seat as the test loading is simultaneously
0.5% after consecutive weighings.)
10. Test Methods
10.1 Shear Strength (Rate-of-Shear Strength Development):
10.1.1 Preparation of Wallboard-Plywood Laminates—The
gypsum wallboard must be reinforced with plywood. The
plywood reinforced gypsum wallboard is referred to as the
wallboard-plywood laminate. Each laminate is made by bond-
1 1
ing the front surface of a piece of 4 by 3 ⁄2 by ⁄2 in. (101.6 by
3 23
88.9by12.7mm)thickwallboardtoa ⁄4 or ⁄32in.(19or18.3
mm) thick plywood piece of the same dimensions with a
commercially available adhesive. The grain of the wallboard
backsurfacefacingpapershallrunparallelwiththe3 ⁄2in.(89
mm) direction. Cure the adhesive in accordance with the
adhesive manufacturer’s recommendations. Condition the
wallboard-plywood laminate to a constant weight in accor-
dance with 9.2. FIG. 3 Predrilled Shear Test Specimen Prior to Assembly
D6464 − 03a (2017)
appliedtothetopedgeoftheplywood.Thestressappliedmust top (wallboard/plywood) of the assembly to a rigid frame and
be parallel and uniformly distributed to the joint (shear plane) attach the load to the bottom (plywood), making sure that
and must require careful orientation using shims and self- perfect alignment of the suspended assembly and the loads are
aligning apparatus as necessary. Determine the shear strength achieved.
atacrossheadspeedof0.2in.(5.1mm)/min.Observationsare
10.1.7.4 At the end of each condition’s 24-h period, exam-
made during stress application to ensure the test assembly ine each test specimen assembly for bond separation and
maintains proper alignment throughout the test. The test
slippage between the wallboard-plywood laminate and the
fixtures cannot in any way cause stress measurement error(s) plywood adherend. Slippage or separation at the bond line of
such as with binding or friction. Report the maximum shear
the adhesive is considered a failure. Report the results of
strength and the average shear strengths for the 24 h, the 14 analysisforeachofthefivestaticloadsheartestspecimensfor
day, and the cyclic exposure test conditions.
both conditions.
10.1.4 Shear Strength After 24 h:
10.2 Tensile Strength (Rate of Strength Development):
10.1.4.1 Prepare five test assemblies using the procedure in
10.2.1 Preparation of Wallboard-Plywood Laminates—
10.1.1 and 10.1.2.
Prepare the laminates using the same procedure in 10.1.1, but
10.1.4.2 After aging the assemblies 24 6 1 h at standard
with 4 by 4 in. (101.6 by 101.6 mm) gypsum wallboard and
condition (9.1), determine the shear strength in accordance
plywood shims, or without plywood shim as shown in Fig. 1.
with 10.1.3.
Drill one pilot hole with a 0.125 in. (3.2 mm) drill bit through
10.1.5 Shear Strength After 14 Days:
thecenterofthewallboard–plywoodlaminate.Thepilotholeis
10.1.5.1 Prepar
...
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