ASTM D6383-99e1

NOTICE: This standard has either been superseded and replaced by a new version or withdrawn.
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e1
Designation:D6383–99
Standard Practice for
Time-to-Failure (Creep-Rupture) of Adhesive Joints
Fabricated from EPDM Roof Membrane Material
This standard is issued under the fixed designation D6383; 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 (e) indicates an editorial change since the last revision or reapproval.
e NOTE—Table 1 and paragraph 9.1.2 were editorially corrected in June 2000.
1. Scope and Bituminous Materials
D 5405 Test Method for Conducting Time-to-Failure
1.1 This practice covers sample preparation temperatures,
(Creep-Rupture) Tests of Joints Fabricated from Nonbitu-
test parameters, and specimen exposure conditions that are
minous Organic Roof Membrane Material
applicable when Test Method D5405 is used for conducting
2.2 SPRI Document:
time-to-failure (creep-rupture) tests of adhesive joints fabri-
SPRI Recommended Laboratory Test Methods for Liquid
cated from ethylene-propylene-diene terpolymer (EPDM) roof
and Tape Adhesives Used to Splice Single-Ply Mem-
membrane material.
branes
1.2 This practice is applicable to joints fabricated in the
laboratory from EPDM roof membrane materials and adhe-
3. Terminology
sives received from suppliers, and to joints prepared from
3.1 Definitions— For definitions of terms used in this
EPDM seams sampled from field installations.
practice, refer to Terminologies D907 and D1079.
1.3 The joints are bonded using preformed tape or liquid-
3.2 Definitions of Terms Specific to This Standard:
based adhesives, and EPDM roof membrane materials that are
3.2.1 creep-rupture test—a test that measures the time-to-
non-reinforced, fabric- or scrim-reinforced, and fabric backed.
failure of a specimen subjected to a constant load; progressive
Primers are also used as recommended for the specific adhe-
specimen deformation may also be measured.
sive.
3.2.2 failure—rupture of the bond resulting in complete
1.4 Thispracticecontainsnotesthatareexplanatoryandare
separation of its adherends under the test conditions; or,
not part of the mandatory requirements of this practice.
alternatively, rupture of the membrane material away from the
1.5 The values stated in SI units are to be regarded as the
bonded section of the test specimen (that is, material rupture).
standard. The inch-pound units given in parentheses are for
3.2.3 time-to-failure—the period of time beginning when a
information only.
joint specimen is placed under load and ending when failure
1.6 This standard does not purport to address all of the
occurs.
safety concerns, if any, associated with its use. It is the
responsibility of the user of this standard to establish appro-
4. Summary of Practice
priate safety and health practices and determine the applica-
4.1 Adhesive joints are prepared in the laboratory at ambi-
bility of the regulatory limitations prior to use.
ent and low temperatures using tape or liquid adhesives and
2. Referenced Documents EPDM roof membrane material. Creep-rupture tests are then
conducted in accordance with Test Method D5405 before and
2.1 ASTM Standards:
after subjecting these joints to artificial exposure in the
D907 Terminology of Adhesives
laboratory. The loads are applied in either peel or shear
D1079 Terminology Relating to Roofing, Waterproofing,
configurations at ambient and elevated temperatures. Table 1
summarizes the preparation temperatures, test parameters, and
exposureconditionsincorporatedinthispractice.Alternatively,
This practice is under the jurisdiction of ASTM Committee D-8 on Roofing,
Waterproofing, and Bituminous Materials and is the direct responsibility of
Subcommittee D08.18 on Nonbituminous Organic Roof Coverings.
Current edition approved Jan. 10, 1999. Published March 1999.
Annual Book of ASTM Standards, Vol 04.04.
Annual Book of ASTM Standards, Vol 15.06.
Available from SPRI, 175 Highland Ave., Needham, MA 01294.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.
D6383
TABLE 1 Summary of the Sample Preparation Temperature, Test Parameters, and Exposure Conditions Incorporated in the Practice
Sample Test Parameters
Sample Preparation
Set Temperature Temperature Loading Load Artificial Exposure Before Testing
Number °C °F °C °F Peel N lbf Conditions
1 23 73 23 73 Peel 9.8 2.2 None
2 23 73 70 158 Peel 9.8 2.2 None
3 −4 25 23 73 Peel 9.8 2.2 None
4 23 73 23 73 Peel 9.8 2.2 Heat: 90°C (194°F) for 90 days
5 23 73 23 73 Peel 9.8 2.2 Dry heat, wet heat, and freeze-thaw
cycling according to SPRI procedure
(†See 9.1.2)
6 23 73 23 73 Shear 29.4 6.6 None
7 23 73 70 158 Shear 29.4 6.6 None
† Editorially corrected.
adhesive joints are prepared from EPDM seams sampled from mens are less creep-resistant under peel loading than under
roofs in service, and then subjected directly to creep-rupture shearloading.Consequently,themajorityofthetestsstipulated
testing.
in this practice are performed under peel loading.
5.5 Thispracticedoesnotdeveloptime-to-failuredataonall
5. Significance and Use
environmental conditions to which EPDM adhesive seams can
5.1 An important factor affecting the performance of seams
be subjected in service.
ofEPDMmembranesistheirabilitytoremainbondedoverthe
membrane’sexpectedservicelife.Time-to-failuretestsprovide
6. Test Specimen
a means of characterizing the behavior of joints under constant
6.1 Laboratory Specimens—Prepare peel specimens and
load over time.
shear specimens as described in Section 8 of Test Method
NOTE 1—Table 1 is based on the results of an industry government
D5405. Table 1 lists the seven sample sets for which speci-
consortium study on creep-rupture resistance (time-to-failure) of EPDM
mens are prepared.
,
adhesive joints . Referral to Footnotes 5 and 6 provides typical time-to-
6.1.1 Peel Specimen Dimensions—The dimensions of the
failure data, developed under the conditions in Table 1, for EPDM joints
fabricated in the laboratory with nonreinforced EPDM roof membrane peelspecimensshallbe125by25mm(5by1in.) 62%.The
material, butyl-based tapes, and liquid adhesives. It is noted that the peel
bond length shall be 75 mm (3 in.) 6 2%.The bond is located
loadspecifiedinthispracticeis9.8N(2.2lbf).Thepeelloadunderwhich
at one end of the specimen.
the tests described in Footnotes 5 and 6 were conducted was 9.3 N (2.1
6.1.2 Shear Specimen Dimensions—The dimensions of the
lbf). A load of 9.8 N (2.2 lbf) corresponds to 1 kgf (2.2 lbf), and dead
shearspecimensshallbe150by25mm(6by1in.) 62%.The
weights of 1-k
...