ASTM D1101-97a(2006)
(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
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.
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.
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 D 2559, which is used to qualify adhesives for structural laminated wood products for use under exterior (wet-use) exposure conditions under industry standard ANSI/AITC A190.1-1992.
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.
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 2006)
StandardTest 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 priate safety and health practices and determine the applica-
bility of regulatory limitations prior to use.
1.1 These test methods cover an accelerated means of
measuring the resistance to delamination of structural lami-
2. Referenced Documents
nated wood members intended for exterior service.
2.1 ASTM Standards:
1.2 These test methods are not intended as substitutes or
D907Terminology of Adhesives
replacements for the more severe test of resistance to delami-
D2559Specification for Adhesives for Bonded Structural
nation in Specification D2559, which is used to qualify
Wood Products for Use Under Exterior Exposure Condi-
adhesivesforstructurallaminatedwoodproductsforuseunder
tions
exterior (wet-use) exposure conditions under industry standard
2.2 Other Standards:
ANSI/AITC A190.1-1992.
ANSI/AITC A190.1–1992 Wood Products – Structural
1.3 Two test methods are included. Choice of test method
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:
manufacturing techniques and equipment for production of
3.1.1 Many terms in these test methods are defined in
joints adequate for exterior service.
Terminology D907.
1.3.2 Test Method B—This test requires approximately 12 ⁄2
3.1.2 glulam, n—synonym for structural-glued-laminated
h. (If excessive delamination occurs, the cycle is repeated). It
timber.
is a quality-control type test for examining adhesive joint
3.1.3 structural-glued-laminated timber, n— an engineered
quality.
stress-rated product of a timber laminating plant comprising
1.4 The values stated in SI units are to be regarded as the
assemblies of specially selected and prepared wood lamina-
standard. The values given in parentheses are for information
tions securely bonded together with adhesives, with the fol-
only.
lowing characteristics: (1) the grain of all laminations is
approximately parallel longitudinally; and (2) the laminations
1.5 This standard does not purport to address all of the
may be comprised of pieces end-joined to form any length, of
safety concerns, if any, associated with its use. It is the
pieces placed or glued edge-to-edge to make wider ones or of
responsibility of the user of this standard to establish appro-
pieces bent to curved form during gluing. (Synonym glulam)
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 March 15, 2006. Published March 2006. Originally the ASTM website.
approved in 1997. Last previous edition approve in 1997 as D1101–97a. DOI: Available fromAmerican National Standards Institute (ANSI), 25 W. 43rd St.,
10.1520/D1101-97AR06. 4th Floor, New York, NY 10036.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
D1101 − 97a (Reapproved 2006)
ANSI/AITC A190.1-1992. American National Standard for TEST METHOD A
WoodProducts,StructuralGluedLaminatedTimber(Editedto
7. Procedure
conform with ASTM format).
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
of 517 + 34 kPa (75 6 5 psi) for 1 h. With the specimens still
4. Significance and Use
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 represent the probable
days.
range of quality of the adhesive joints.
7.2 At the end of the final drying period, measure to
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