ASTM D6383-99(2005)

NOTICE: This standard has either been superseded and replaced by a new version or withdrawn.
Contact ASTM International (www.astm.org) for the latest information
Designation:D6383–99 (Reapproved 2005)
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 (´) indicates an editorial change since the last revision or reapproval.
1. Scope minous Organic Roof Membrane Material
2.2 SPRI Document:
1.1 This practice covers sample preparation temperatures,
SPRI Recommended Laboratory Test Methods for Liquid
test parameters, and specimen exposure conditions that are
andTapeAdhesivesUsedtoSpliceSingle-PlyMembranes
applicable when Test Method D5405 is used for conducting
time-to-failure (creep-rupture) tests of adhesive joints fabri-
3. Terminology
cated from ethylene-propylene-diene terpolymer (EPDM) roof
3.1 Definitions—For definitions of terms used in this prac-
membrane material.
tice, refer to Terminologies D907 and D1079.
1.2 This practice is applicable to joints fabricated in the
3.2 Definitions of Terms Specific to This Standard:
laboratory from EPDM roof membrane materials and adhe-
3.2.1 creep-rupture test—a test that measures the time-to-
sives received from suppliers, and to joints prepared from
failure of a specimen subjected to a constant load; progressive
EPDM seams sampled from field installations.
specimen deformation may also be measured.
1.3 The joints are bonded using preformed tape or liquid-
3.2.2 failure—rupture of the bond resulting in complete
based adhesives, and EPDM roof membrane materials that are
separation of its adherents under the test conditions; or,
non-reinforced, fabric- or scrim-reinforced, and fabric backed.
alternatively, rupture of the membrane material away from the
Primers are also used as recommended for the specific adhe-
bonded section of the test specimen (that is, material rupture).
sive.
3.2.3 time-to-failure—the period of time beginning when a
1.4 Thispracticecontainsnotesthatareexplanatoryandare
joint specimen is placed under load and ending when failure
not part of the mandatory requirements of this practice.
occurs.
1.5 The values stated in SI units are to be regarded as the
standard. The inch-pound units given in parentheses are for
4. Summary of Practice
information only.
4.1 Adhesive joints are prepared in the laboratory at ambi-
1.6 This standard does not purport to address all of the
ent and low temperatures using tape or liquid adhesives and
safety concerns, if any, associated with its use. It is the
EPDM roof membrane material. Creep-rupture tests are then
responsibility of the user of this standard to establish appro-
conducted in accordance with Test Method D5405 before and
priate safety and health practices and determine the applica-
after subjecting these joints to artificial exposure in the
bility of the regulatory limitations prior to use.
laboratory. The loads are applied in either peel or shear
2. Referenced Documents configurations at ambient and elevated temperatures. Table 1
2 summarizes the preparation temperatures, test parameters, and
2.1 ASTM Standards:
exposureconditionsincorporatedinthispractice.Alternatively,
D907 Terminology of Adhesives
adhesive joints are prepared from EPDM seams sampled from
D1079 TerminologyRelatingtoRoofingandWaterproofing
roofs in service, and then subjected directly to creep-rupture
D5405 Test Method for Conducting Time-to-Failure
testing.
(Creep-Rupture) Tests of Joints Fabricated from Nonbitu-
5. Significance and Use
5.1 An important factor affecting the performance of seams
ThispracticeisunderthejurisdictionofASTMCommitteeD08onRoofingand
ofEPDMmembranesistheirabilitytoremainbondedoverthe
Waterproofing and is the direct responsibility of Subcommittee D08.18 on Nonbi-
membrane’sexpectedservicelife.Time-to-failuretestsprovide
tuminous Organic Roof Coverings.
Current edition approved May 1, 2005. Published May 2005. Originally a means of characterizing the behavior of joints under constant
´1
approved in 1999. Last previous edition approved in 1999 as D6383–99 . DOI:
load over time.
10.1520/D6383-99R05.
For referenced ASTM standards, visit the ASTM website, www.astm.org, or
contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM
Standards volume information, refer to the standard’s Document Summary page on AvailablefromSinglePlyRoofingInstitute(SPRI),77RumfordAve.,Suite3B,
the ASTM website. Waltham, MA 02453.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.
D6383–99 (2005)
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
NOTE 1—Table 1 is based on the results of an industry government
6.1.1 Peel Specimen Dimensions—The dimensions of the
consortium study on creep-rupture resistance (time-to-failure) of EPDM
peelspecimensshallbe125by25mm(5by1in.) 62%.The
4,5
adhesive joints. Referral to Footnotes 5 and 6 provides typical time-to-
bond length shall be 75 mm (3 in.) 6 2%.The bond is located
failure data, developed under the conditions in Table 1, for EPDM joints
at one end of the specimen.
fabricated in the laboratory with nonreinforced EPDM roof membrane
6.1.2 Shear Specimen Dimensions—The dimensions of the
material, butyl-based tapes, and liquid adhesives. It is noted that the peel
loadspecifiedinthispracticeis9.8N(2.2lbf).Thepeelloadunderwhich shearspecimensshallbe150by25mm(6by1in.) 62%.The
the tests described in Footnotes 4 and 5 were conducted was 9.3 N (2.1
bond length shall be 25 mm (1 in.) 6 2%.The bond is located
lbf). A load of 9.8 N (2.2 lbf) corresponds to 1 kgf (2.2 lbf), and dead
at the center of the specimen.
weights of 1-kg (2.2-lbm) mass are available through laboratory equip-
6.1.3 EPDM Surface Preparation—Prior to bond forma-
ment supply houses. Similarly, a load of 29.4 N (6.6 lbf) corresponds to a
tion, prepare the surface of the sheet material in accordance
dead weight of 3-kg (6.6-lbm) mass.
with the EPDM supplier’s instructions. Where primers are
5.2
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