ASTM D1779-98(2011)

NOTICE: This standard has either been superseded and replaced by a new version or withdrawn.
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Designation:D1779 −98(Reapproved 2011)
Standard Specification for
Adhesive for Acoustical Materials
This standard is issued under the fixed designation D1779; 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.
This standard has been approved for use by agencies of the Department of Defense.
various manifestations of aging, and are intended to be satisfactory for
1. Scope
comparingoneadhesivewithanother;theydonotnecessarilyreflectaging
1.1 This specification covers an adhesive for bonding pre-
characteristics on an absolute basis. Purchasers of adhesives should
fabricated acoustical materials to the inside walls and ceilings receive from the manufacturer additional warranties and assurances of
performance of the adhesive under normal aging.
of rooms in buildings. This adhesive is required to maintain a
4 NOTE 6—Erection Practices—Proper erection techniques are essential
tensile adhesion (bond strength) of not less than 3.45 × 10
for proper performance of any acoustical adhesive. Use of a material
2 2
dynes/cm ( ⁄2 lb/in. ) for a long period of time under the
meeting this specification will not in itself guarantee satisfactory perfor-
temperature and moisture conditions likely to be encountered
mance. Only when tiles are applied by skilled and experienced workers
and to maintain sufficient plasticity to allow for movement of followinginstructionsfromthemanufacturercanthepurchaserbeassured
of satisfactory performance of an adhesive.
parts of the building as it ages.
1.2 The values stated in SI units are to be regarded as the
NOTE 1—Cleanliness of Surface—The surface to which the acoustical
standard. The values given in parentheses are for information
material is applied with the adhesive should be clean, sound, and dry.
Surface coatings should be removed if their nature indicates an unsatis- only.
factory installation, so that the adhesive can be applied to the base. When
1.3 This standard does not purport to address all of the
the adhesive is to be applied on a painted surface, test tile should be
safety concerns, if any, associated with its use. It is the
applied for 48 h to determine suitable adherence of the coating by
examination. Acoustical adhesives are not intended to be applied to responsibility of the user of this standard to establish appro-
surfacesthataremoistandthathaveanalkalinereaction,orthatmaylater
priate safety and health practices and determine the applica-
become moist or alkaline. Such surfaces, as concrete or plaster, should be
bility of regulatory limitations prior to use.
properly dried and aged before applying the adhesive.
NOTE 2—Load—This adhesive is not recommended as a sole means of
2. Referenced Documents
2 2
holding acoustical materials weighing more than 121 kg/m (2 ⁄2 lb/ft)to
ceiling surfaces.
2.1 ASTM Standards:
NOTE 3—Amount and Condition of Material—It is recommended that
C37/C37M Specification for Gypsum Lath (Withdrawn
sufficientadhesivebeusedsothatthereisacontactsurfaceofnotlessthan
4 2 2 2 2 2004)
1.2×10 cm /m (20 in. /ft ) of acoustical material, with a minimum
1 D618Practice for Conditioning Plastics for Testing
thickness of 0.3 cm ( ⁄8 in.) and that the adhesive be applied in four
separate nearly spherical portions of approximately equal size near the
D907Terminology of Adhesives
corners for a standard 30.5 by 30.5-cm (12 by 12-in.) tile. Fewer than or
E104Practice for Maintaining Constant Relative Humidity
morethanfourportionsfor30.5by30.5-cmtilearenotrecommendeddue
by Means of Aqueous Solutions
to difficulty in leveling and in securing effective contact area on all
2.2 Federal Specification:
portions.Adhesivesthatarehard,ordonotwetthesurface,oraredifficult
to spread should not be used. MMM-A—00150B Interim Federal Specification for
NOTE 4—Rigidity of Base Surfaces—It is necessary that the material
Acoustical Materials
forming the base to which the adhesive is attached should be relatively
smooth, firm, and rigid. If the pressure of applying tile and adhesive
3. Terminology
causesthebasematerialtodeflectexcessively,tilepreviouslyappliedmay
have their adhesive bond broken. This occurs on some types of gypsum 3.1 Definitions—Many terms in this specification are de-
board suspension systems.
fined in Terminology D907.
NOTE5—Aging—Todate,noacceleratedagingtestsforadhesiveshave
been developed to duplicate exactly aging in service. The aging tests in
this specification are designed to accelerate the aging process and to test
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
Standards volume information, refer to the standard’s Document Summary page on
This specification is under the jurisdiction of ASTM Committee D14 on the ASTM website.
Adhesives and is the direct responsibility of Subcommittee D14.70 on Construction The last approved version of this historical standard is referenced on
Adhesives. www.astm.org.
Current edition approved Jan. 1, 2011. Published January 2011. Originally Available from Standardization Documents Order Desk, DODSSP, Bldg. 4,
approved in 1960. Last previous edition approved in 2004 as D1779–98(2004). Section D, 700 Robbins Ave., Philadelphia, PA 19111-5098, http://
DOI: 10.1520/D1779-98R11. dodssp.daps.dla.mil.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
D1779−98(2011)
TABLE 1 Strength Test Requirements
4. General Requirements
Adhesive Relative
4.1 Composition—The adhesive must be of uniform com- Temperature, Duration,
Test Thickness, Load, N (lbf) Humidity,
°C h
A
position.Itmustbefreefromallingredientsthatwillaffectthe
cm (in.) %
3 1
serviceabilityoftheadhesiveorhaveadeleteriouseffectonthe
1 0.5 ( ⁄16 ) 21to27 (2 ⁄4 ) 50± 5 72
10.01
21 to 27 (2 ⁄4) 80to85 72
acoustical material or the surface to which the acoustical
2 0.5 ( ⁄16 ) 21to27 0 (0) 50±5 24
material is attached.
49 7.78 (1 ⁄4 ) <10 72
3 1
3 0.9 ( ⁄8 ) 21to27 (1 ⁄4 ) 50± 5 72
4.2 Toxicity—The adhesive must not liberate toxic gases or
5.56
21 to 27 (1 ⁄4) 80to85 72
fumes under normal conditions of use and application, nor
4 0.9 ( ⁄8 ) 21to27 0 (0) 50±5 24
shallitcontainirritatingsubstances.Theadhesivemustcontain 49 3.34 ( ⁄4 ) <10 72
A
no more than 0.5% of benzene or volatile chlorinated hydro-
Saturated salt solutions for maintaining constant relative humidity are given in
Practice E104.
carbon solvent.
4.3 Workmanship—Theingredientsandprocessesusedmust
be an adhesive for acoustical materials meeting the require-
ments of this specification.
7. Test Methods
7.1 Determine the properties enumerated in this specifica-
5. Detail Requirements
tion in accordance with the following test methods:
5.1 Consistency—The initial consistency of the adhesive
7.1.1 Consistency—Determine the consistency of the adhe-
mustadheretothesurfacesbeingbonded,spreadorbecapable
sive as received by applying the material to plywood and
of being applied readily, and not sag from walls or drop from
gypsum board surfaces by hand tools at 20 to 30°C (68 to
ceilings.
86°F). The adhesive must spread readily, trowel smoothly
5.2 Wetting—The adhesive must wet completely the sur-
without drag, adhere to the surfaces, and not sag from walls or
faces being bonded.
drop from ceilings when applied in a thickness of approxi-
mately 0.9 cm ( ⁄8 in.).
5.3 Strength—The tensile-adhesion specimens prepared
7.1.2 Wetting—Place
...