ASTM D1779-98(2004)
(Specification)Standard Specification for Adhesive for Acoustical Materials
Standard Specification for Adhesive for Acoustical Materials
ABSTRACT
This specification covers the requirements for an adhesive which is intended for use in bonding pre-fabricated acoustical materials to the inside walls and ceilings of rooms in buildings. This adhesive is required to maintain a specific tensile adhesion or bond strength for a long period of time under the temperature and moisture conditions likely to be encountered and to maintain sufficient plasticity to allow for movement of parts of the building as it ages. The adhesive shall be of uniform composition, shall be free from all ingredients that will affect its serviceability or have a deleterious effect on the acoustical material, shall not liberate toxic gases or fumes under normal conditions of use and application, nor shall it contain irritating substances. Tests shall be conducted to determine the following adhesive properties: surface adherence; wetting; tensile and adhesion strengths; volume shrinkage; cracking; and plasticity to permit indentation. The specimens shall also be subjected to migration or bleeding and storage tests.
SCOPE
1.1 This specification covers an adhesive for bonding prefabricated acoustical materials to the inside walls and ceilings of rooms in buildings. This adhesive is required to maintain a tensile adhesion (bond strength) of not less than 3.45 104 dynes/cm2 (1/2 lb/in.2) for a long period of time under the temperature and moisture conditions likely to be encountered and to maintain sufficient plasticity to allow for movement of parts of the building as it ages.
Note 1—Cleanliness of Surface-The surface to which the acoustical material is applied with the adhesive should be clean, sound, and dry. Surface coatings should be removed if their nature indicates an unsatisfactory installation, so that the adhesive can be applied to the base. When the adhesive is to be applied on a painted surface, test tile should be applied for 48 h to determine suitable adherence of the coating by examination. Acoustical adhesives are not intended to be applied to surfaces that are moist and that have an alkaline reaction, or that may later become moist or alkaline. Such surfaces, as concrete or plaster, should be properly dried and aged before applying the adhesive.
Note 2—Load-This adhesive is not recommended as a sole means of holding acoustical materials weighing more than 121 kg/m 2 (21/2 lb/ft2) to ceiling surfaces.
Note 3—Amount and Condition of Material-It is recommended that sufficient adhesive be used so that there is a contact surface of not less than 1.2 104 cm2/m2 (20 in.2/ft2) of acoustical material, with a minimum thickness of 0.3 cm (1/8 in.) and that the adhesive be applied in four separate nearly spherical portions of approximately equal size near the corners for a standard 30.5 by 30.5-cm (12 by 12-in.) tile. Fewer than or more than four portions for 30.5 by 30.5-cm tile are not recommended due to difficulty in leveling and in securing effective contact area on all portions. Adhesives that are hard, or do not wet the surface, or are difficult to spread should not be used.Note 4
Rigidity of Base Surfaces-It is necessary that the material forming the base to which the adhesive is attached should be relatively smooth, firm, and rigid. If the pressure of applying tile and adhesive causes the base material to deflect excessively, tile previously applied may have their adhesive bond broken. This occurs on some types of gypsum board suspension systems.Note 5
Aging-To date, no accelerated aging tests for adhesives have been developed to duplicate exactly aging in service. The aging tests in this specification are designed to accelerate the aging process and to test various manifestations of aging, and are intended to be satisfactory for comparing one adhesive with another; they do not necessarily reflect aging characteristics on an absolute basis. Purchasers of adhesives should receive from the manufacturer additional warranties and assurances of performance of the adhes...
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Designation: D1779 – 98 (Reapproved 2004)
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. A number 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.
causes the base material to deflect excessively, tile previously applied may
1. Scope
have their adhesive bond broken. This occurs on some types of gypsum
1.1 This specification covers an adhesive for bonding pre-
board suspension systems.
fabricated acoustical materials to the inside walls and ceilings
NOTE 5—Aging—To date, no accelerated aging tests for adhesives have
of rooms in buildings. This adhesive is required to maintain a
been developed to duplicate exactly aging in service. The aging tests in
tensile adhesion (bond strength) of not less than 3.45 3 10 this specification are designed to accelerate the aging process and to test
2 2
various manifestations of aging, and are intended to be satisfactory for
dynes/cm ( ⁄2 lb/in. ) for a long period of time under the
comparingoneadhesivewithanother;theydonotnecessarilyreflectaging
temperature and moisture conditions likely to be encountered
characteristics on an absolute basis. Purchasers of adhesives should
and to maintain sufficient plasticity to allow for movement of
receive from the manufacturer additional warranties and assurances of
parts of the building as it ages.
performance of the adhesive under normal aging.
NOTE 6—Erection Practices—Proper erection techniques are essential
NOTE 1—Cleanliness of Surface—The surface to which the acoustical
for proper performance of any acoustical adhesive. Use of a material
material is applied with the adhesive should be clean, sound, and dry.
meeting this specification will not in itself guarantee satisfactory perfor-
Surface coatings should be removed if their nature indicates an unsatis-
mance. Only when tiles are applied by skilled and experienced workers
factory installation, so that the adhesive can be applied to the base. When
following instructions from the manufacturer can the purchaser be assured
the adhesive is to be applied on a painted surface, test tile should be
of satisfactory performance of an adhesive.
applied for 48 h to determine suitable adherence of the coating by
examination. Acoustical adhesives are not intended to be applied to
1.2 The values stated in SI units are to be regarded as the
surfaces that are moist and that have an alkaline reaction, or that may later
standard. The values given in parentheses are for information
become moist or alkaline. Such surfaces, as concrete or plaster, should be
only.
properly dried and aged before applying the adhesive.
1.3 This standard does not purport to address all of the
NOTE 2—Load—This adhesive is not recommended as a sole means of
2 2
safety concerns, if any, associated with its use. It is the
holding acoustical materials weighing more than 121 kg/m (2 ⁄2 lb/ft )to
ceiling surfaces. responsibility of the user of this standard to establish appro-
NOTE 3—Amount and Condition of Material—It is recommended that
priate safety and health practices and determine the applica-
sufficientadhesivebeusedsothatthereisacontactsurfaceofnotlessthan
bility of regulatory limitations prior to use.
4 2 2 2 2
1.2 3 10 cm /m (20 in. /ft ) of acoustical material, with a minimum
thickness of 0.3 cm ( ⁄8 in.) and that the adhesive be applied in four
2. Referenced Documents
separate nearly spherical portions of approximately equal size near the
2.1 ASTM Standards:
corners for a standard 30.5 by 30.5-cm (12 by 12-in.) tile. Fewer than or
C37/C37M Specification for Gypsum Lath
more than four portions for 30.5 by 30.5-cm tile are not recommended due
to difficulty in leveling and in securing effective contact area on all D618 Practice for Conditioning Plastics for Testing
portions.Adhesives that are hard, or do not wet the surface, or are difficult
D907 Terminology of Adhesives
to spread should not be used.
E104 Practice for Maintaining Constant Relative Humidity
NOTE 4—Rigidity of Base Surfaces—It is necessary that the material
by Means of Aqueous Solutions
forming the base to which the adhesive is attached should be relatively
2.2 Federal Specification:
smooth, firm, and rigid. If the pressure of applying tile and adhesive
1 2
This specification is under the jurisdiction of ASTM Committee D14 on For referenced ASTM standards, visit the ASTM website, www.astm.org, or
Adhesives and is the direct responsibility of Subcommittee D14.70 on Construction contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM
Adhesives. Standards volume information, refer to the standard’s Document Summary page on
Current edition approved April 1, 2004. Published April 2004. Originally the ASTM website.
approved in 1960. Last previous edition approved in 1998 as D1779 – 98. DOI: Withdrawn. The last approved version of this historical standard is referenced
10.1520/D1779-98R04. on www.astm.org.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.
D1779 – 98 (2004)
MMM-A—00150B Interim Federal Specification for appear to be nonrepresentative, and such samples must be
Acoustical Materials tested separately. Place the samples immediately in airtight
containers and transport them to the testing laboratory in these
3. Terminology
containers. Precautions must be taken to reduce evaporation or
drying to a minimum. The adhesive in the can must be
3.1 Definitions—Many terms in this specification are de-
fined in Terminology D907. thoroughly mixed if there is a tendency for the materials to
separate on standing.
4. General Requirements
4.1 Composition—The adhesive must be of uniform com-
TABLE 1 Strength Test Requirements
position. It must be free from all ingredients that will affect the
Adhesive Relative
Temperature, Duration,
serviceabilityoftheadhesiveorhaveadeleteriouseffectonthe
Test Thickness, Load, N (lbf) Humidity,
°C h
A
cm (in.) %
acoustical material or the surface to which the acoustical
3 1
1 0.5 ( ⁄16) 21to27 (2 ⁄4)506572
material is attached.
10.01
21 to 27 (2 ⁄4) 80to85 72
4.2 Toxicity—The adhesive must not liberate toxic gases or
2 0.5 ( ⁄16) 21to27 0 (0) 50 6524
fumes under normal conditions of use and application, nor 3
49 7.78 (1 ⁄4) <10 72
3 1
3 0.9 ( ⁄8) 21to27 (1 ⁄4)506572
shallitcontainirritatingsubstances.Theadhesivemustcontain
5.56
21 to 27 (1 ⁄4) 80to85 72
no more than 0.5 % of benzene or volatile chlorinated hydro-
4 0.9 ( ⁄8) 21to27 0 (0) 50 6524
carbon solvent.
49 3.34 ( ⁄4) <10 72
4.3 Workmanship—The ingredients and processes used A
Saturated salt solutions for maintaining constant relative humidity are given in
Practice E104.
must be an adhesive for acoustical materials meeting the
requirements of this specification.
7. Test Methods
5. Detail Requirements
7.1 Determine the properties enumerated in this specifica-
5.1 Consistency—The initial consistency of the adhesive
tion in accordance with the following test methods:
must adhere to the surfaces being bonded, spread or be capable
7.1.1 Consistency—Determine the consistency of the adhe-
of being applied readily, and not sag from walls or drop from
sive as received by applying the material to plywood and
ceilings.
gypsum board surfaces by hand tools at 20 to 30°C (68 to
5.2 Wetting—The adhesive must wet completely t
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