ASTM D1101-97a(2018)

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: D1101 − 97a (Reapproved 2018)
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 ization established in the Decision on Principles for the
Development of International Standards, Guides and Recom-
1.1 These test methods cover an accelerated means of
mendations issued by the World Trade Organization Technical
measuring the resistance to delamination of structural lami-
Barriers to Trade (TBT) Committee.
nated wood members intended for exterior service.
1.2 These test methods are not intended as substitutes or
2. Referenced Documents
replacements for the more severe test of resistance to delami-
2.1 ASTM Standards:
nation in Specification D2559.
D907Terminology of Adhesives
1.3 Two test methods are included. Choice of test method
D2559Specification for Adhesives for Bonded Structural
depends on purpose of the test and available time to complete.
Wood Products for Use Under Exterior Exposure Condi-
1.3.1 Test Method A—This test requires 3 days to complete
tions
andisamethodfordeterminingthesuitabilityofadhesivesand
2.2 Other Standards:
manufacturing techniques and equipment for production of
ANSI A190.1 American Nation Standard for Wood
joints adequate for exterior service.
Products—Structural Glued Laminated Timber
1.3.2 Test Method B—This test requires approximately 12 ⁄2
3. Terminology
h. (If excessive delamination occurs, the cycle is repeated). It
is a quality-control type test for examining adhesive joint
3.1 Definitions—Many terms in these test methods are
quality.
defined in Terminology D907.
3.1.1 glulam, n—synonym for structural-glued-laminated
1.4 The values stated in SI units are to be regarded as the
timber.
standard. The values given in parentheses are for information
only.
3.1.2 structural-glued-laminated timber, n—an engineered
stress-rated product of a timber laminating plant comprising
1.5 This standard does not purport to address all of the
assemblies of specially selected and prepared wood lamina-
safety concerns, if any, associated with its use. It is the
tions securely bonded together with adhesives, with the fol-
responsibility of the user of this standard to establish appro-
lowing characteristics: (1) the grain of all laminations is
priate safety, health, and environmental practices and deter-
approximately parallel longitudinally; and (2) the laminations
mine the applicability of regulatory limitations prior to use.
may be comprised of pieces end-joined to form any length, of
1.6 This international standard was developed in accor-
pieces placed or glued edge-to-edge to make wider ones or of
dance with internationally recognized principles on 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
Current edition approved Aug. 1, 2018. Published August 2018. Originally the ASTM website.
approved in 1997. Last previous edition approve in 2013 as D1101–97a (2013). Available fromAmerican National Standards Institute (ANSI), 25 W. 43rd St.,
DOI: 10.1520/D1101-97AR18. 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 (2018)
pieces bent to curved form during gluing. (Synonym glulam) TEST METHOD A
ANSI A190.1. American National Standard for Wood Prod-
7. Procedure
ucts–Structural Laminated.
7.1 Place the test specimens in the autoclave or pressure
3.2 Definitions of Terms Specific to This Standard:
vessel and weight them down.Admit water at a temperature of
3.2.1 laminated wood, n—the fabricated product resulting
18 to 27°C (65 to 80°F) in sufficient quantity so that the
from the bonding of two or more laminations, with each
specimens are completely submerged. Separate the specimens
lamination made from one or more pieces bonded either
by stickers, wire screens, or other means in such a manner that
lengthwise, edgewise, or both, and all with the direction of the
all end grain surfaces are freely exposed to the water. Draw a
grain essentially parallel, to form a larger piece such as a
vacuum of 508 to 635 mm (20 to 25 in.) Hg (at sea level) and
structural member.
holditfor5min.Thenreleasethevacuumandapplyapressure
4. Significance and Use
of 517 + 34 kPa (75 6 5 psi) for 1 h. With the specimens still
completely immersed, repeat this vacuum pressure cycle mak-
4.1 The test is suitable for check testing properly selected
ing a two-cycle impregnating period requiring a total of 2 ⁄6 h.
samples from regular production or for determining the suit-
Dry the specimens for a period of between 21 and 22 h at 64
ability of adhesives and bonding techniques for the production
to67°C(147to153°F)andarelativehumiditynotgreaterthan
of joints for exterior service.
15%, in an oven capable of maintaining 45 to 50 air changes
4.2 Vary the number of specimens taken from each member
per minute when the oven is empty. During drying, place the
and the number of members selected for test depending on the
specimens at least 50 mm (2 in.) apart with the end-grain
totalnumberofmembersinvolvedandthepurposeofthetests.
surfaces parallel to the stream of air. Repeat the entire
It is advisable, however, to include at least three specimens in
soaking-drying cycle twice to comprise a total test period of 3
the test, with the specimens selected to
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