ASTM D1101-97a(2013)
(Test Method)Standard Test Methods for Integrity of Adhesive Joints in Structural Laminated Wood Products for Exterior Use
Standard Test Methods for Integrity of Adhesive Joints in Structural Laminated Wood Products for Exterior Use
SIGNIFICANCE AND USE
4.1 The test is suitable for check testing properly selected samples from regular production or for determining the suitability of adhesives and bonding techniques for the production of joints for exterior service.
4.2 Vary the number of specimens taken from each member and the number of members selected for test depending on the total number of members involved and the purpose of the tests. It is advisable, however, to include at least three specimens in the test, with the specimens selected to represent the probable range of quality of the adhesive joints.
4.3 Adhesive joints at knots and knotty areas in general are not dependable under severe exposures. Disregard development of delamination at knots and do not include in the measurements or calculations.
SCOPE
1.1 These test methods cover an accelerated means of measuring the resistance to delamination of structural laminated wood members intended for exterior service.
1.2 These test methods are not intended as substitutes or replacements for the more severe test of resistance to delamination in Specification D2559.
1.3 Two test methods are included. Choice of test method depends on purpose of the test and available time to complete.
1.3.1 Test Method A—This test requires 3 days to complete and is a method for determining the suitability of adhesives and manufacturing techniques and equipment for production of joints adequate for exterior service.
1.3.2 Test Method B—This test requires approximately 121/2 h. (If excessive delamination occurs, the cycle is repeated). It is a quality-control type test for examining adhesive joint quality.
1.4 The values stated in SI units are to be regarded as the standard. The values given in parentheses are for information only.
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.
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Designation: D1101 − 97a (Reapproved 2013)
Standard Test Methods for
Integrity of Adhesive Joints in Structural Laminated Wood
Products for Exterior Use
This standard is issued under the fixed designation D1101; 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.
INTRODUCTION
The integrity of adhesive joints for structural laminated wood members, such as laminated arches
andbeams,shouldbeatleastequaltothatofthewood.Becauseinitialstrengthtestsgenerallyarenot
an adequate measure of integrity of adhesive joints under severe service conditions, a test that
simulates the effects of exterior exposure has been devised to evaluate adhesive joints in structural
laminated wood members intended for this type of service.
1. Scope 2. Referenced Documents
2.1 ASTM Standards:
1.1 These test methods cover an accelerated means of
D907Terminology of Adhesives
measuring the resistance to delamination of structural lami-
D2559Specification for Adhesives for Bonded Structural
nated wood members intended for exterior service.
Wood Products for Use Under Exterior Exposure Condi-
1.2 These test methods are not intended as substitutes or
tions
replacements for the more severe test of resistance to delami-
2.2 Other Standards:
nation in Specification D2559.
ANSI A190.1–2012American Nation Standard for Wood
1.3 Two test methods are included. Choice of test method
Products—Structural Glued Laminated Timber
depends on purpose of the test and available time to complete.
3. Terminology
1.3.1 Test Method A—This test requires 3 days to complete
andisamethodfordeterminingthesuitabilityofadhesivesand 3.1 Definitions—Many terms in these test methods are
manufacturing techniques and equipment for production of
defined in Terminology D907.
joints adequate for exterior service.
3.1.1 glulam, n—synonym for structural-glued-laminated
timber.
1.3.2 Test Method B—This test requires approximately 12 ⁄2
h. (If excessive delamination occurs, the cycle is repeated). It
3.1.2 structural-glued-laminated timber, n—an engineered
is a quality-control type test for examining adhesive joint
stress-rated product of a timber laminating plant comprising
quality.
assemblies of specially selected and prepared wood lamina-
tions securely bonded together with adhesives, with the fol-
1.4 The values stated in SI units are to be regarded as the
lowing characteristics: (1) the grain of all laminations is
standard. The values given in parentheses are for information
approximately parallel longitudinally; and (2) the laminations
only.
may be comprised of pieces end-joined to form any length, of
1.5 This standard does not purport to address all of the
pieces placed or glued edge-to-edge to make wider ones or of
safety concerns, if any, associated with its use. It is the
pieces bent to curved form during gluing. (Synonym glulam)
responsibility of the user of this standard to establish appro-
ANSI A190.1-2012. American National Standard for Wood
priate safety and health practices and determine the applica-
Products–Structural Laminated.
bility of regulatory limitations prior to use.
3.2 Definitions of Terms Specific to This Standard:
1 2
These test methods are under the jurisdiction of ASTM Committee D14 on For referenced ASTM standards, visit the ASTM website, www.astm.org, or
Adhesives and are the direct responsibility of Subcommittee D14.30 on Wood 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
CurrenteditionapprovedMay1,2013.PublishedJuly2013.Originallyapproved the ASTM website.
in 1997. Last previous edition approve in 2006 as D1101–97a (2006). DOI: Available fromAmerican National Standards Institute (ANSI), 25 W. 43rd St.,
10.1520/D1101-97AR13. 4th Floor, New York, NY 10036, http://www.ansi.org.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
D1101 − 97a (2013)
3.2.1 laminated wood, n—the fabricated product resulting TEST METHOD A
from the bonding of two or more laminations, with each
7. Procedure
lamination made from one or more pieces bonded either
7.1 Place the test specimens in the autoclave or pressure
lengthwise, edgewise, or both, and all with the direction of the
vessel and weight them down.Admit water at a temperature of
grain essentially parallel, to form a larger piece such as a
18 to 27°C (65 to 80°F) in sufficient quantity so that the
structural member.
specimens are completely submerged. Separate the specimens
by stickers, wire screens, or other means in such a manner that
4. Significance and Use
all end grain surfaces are freely exposed to the water. Draw a
4.1 The test is suitable for check testing properly selected
vacuum of 508 to 635 mm (20 to 25 in.) Hg (at sea level) and
samples from regular production or for determining the suit-
holditfor5min.Thenreleasethevacuumandapplyapressure
ability of adhesives and bonding techniques for the production
of 517 + 34 kPa (75 6 5 psi) for 1 h. With the specimens still
of joints for exterior service.
completely immersed, repeat this vacuum pressure cycle mak-
ing a two-cycle impregnating period requiring a total of 2 ⁄6 h.
4.2 Vary the number of specimens taken from each member
Dry the specimens for a period of between 21 and 22 h at 64
and the number of members selected for test depending on the
to67°C(147to153°F)andarelativehumiditynotgreaterthan
totalnumberofmembersinvolvedandthepurposeofthetests.
15%, in an oven capable of maintaining 45 to 50 air changes
It is advisable, however, to include at least three specimens in
per minute when the oven is empty. During drying, place the
the test, with the specimens selected to represent the probable
specimens at least 50 mm (2 in.) apart with the end-grain
range of quality of the adhesive joints.
surfaces parallel to the stream of air. Repeat the entire
soaking-drying cycle twice to comprise a total test period of 3
4.3 Adhesive joints at knots and knotty areas in general are
days.
not dependable under severe exposures. Disregard develop-
ment of delamination at knot
...
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