ASTM D2523/D2523M-13(2019)e1

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.
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Designation: D2523/D2523M −13 (Reapproved 2019)
Standard Practice for
Testing Load-Strain Properties of Roofing Membranes
This standard is issued under the fixed designation D2523/D2523M; the number immediately following the designation indicates the
year of original adoption or, in the case of revision, the year of last revision. A number in parentheses indicates the year of last
reapproval. A superscript epsilon (´) indicates an editorial change since the last revision or reapproval.
ε NOTE—Units information was editorially revised in January 2019.
1. Scope 3. Terminology
3.1 Definitions of Terms Specific to This Standard:
1.1 This practice is a guide for determining the load-strain
3.1.1 roofing membrane—that part of the roofing system
properties of roofing membranes and their components at
whoseprimaryfunctionistoexcludewater;itdoesnotinclude
various temperatures. Test specimens may be prepared in the
field-applied aggregate.
laboratory or cut from samples obtained in the field.
1.2 The values stated in either SI units or inch-pound units
4. Significance and Use
are to be regarded separately as standard. The values stated in
4.1 This practice is designed to aid those interested in the
each system are not necessarily exact equivalents; therefore, to
engineering properties of roofing membranes.
ensure conformance with the standard, each system shall be
4.2 The data obtained will not permit prediction of the
used independently of the other, and values from the two
systems shall not be combined. servicelifeofamembraneunderfieldconditions.Thedatawill
provide a basis for study of the mechanical properties of the
1.3 This standard does not purport to address all of the
membrane. Note that if strain rates, specimen dimensions,
safety concerns, if any, associated with its use. It is the
initial clear distance between clamps, or temperatures and
responsibility of the user of this standard to establish appro-
moisture contents are varied, the data may not be strictly
priate safety, health, and environmental practices and deter-
comparable.
mine the applicability of regulatory limitations prior to use.
1.4 This international standard was developed in accor-
5. Sampling
dance with internationally recognized principles on standard-
5.1 Take field membrane sample at least 100 by 250 mm [4
ization established in the Decision on Principles for the
by 10 in.] in accordance with good roofing practices. In cases
Development of International Standards, Guides and Recom-
where field-applied aggregate is in place, remove it with a
mendations issued by the World Trade Organization Technical
scraper such as a heated putty knife.
Barriers to Trade (TBT) Committee.
5.1.1 Sample those areas of the membrane that are expected
to represent the extremes in load/strain characteristics.
2. Referenced Documents
5.1.2 At least one sample is required for each test tempera-
2.1 ASTM Standards:
ture at which it is desired to determine load/strain properties.
D95Test Method for Water in Petroleum Products and
5.2 Prepare laboratory samples at least 200 by 300 mm [8
Bituminous Materials by Distillation
by 12 in.] in strict accordance with the roofing specification
D412TestMethodsforVulcanizedRubberandThermoplas-
being tested. Observe all cautions specified, such as not
tic Elastomers—Tension
overheating the bitumen. Do not oven condition any of the
E178Practice for Dealing With Outlying Observations
components or the final sample.
5.2.1 Select those areas of the membrane that are expected
to represent the extremes in load-strain characteristics. Prepare
ThispracticeisunderthejurisdictionofASTMCommitteeD08onRoofingand
at least one sample of each type for each proposed test
Waterproofing and is the direct responsibility of Subcommittee D08.20 on Roofing
temperature. If there is any doubt about these areas, include all
Membrane Systems.
possible variations. The samples must be uniform in cross
Current edition approved Jan. 1, 2019. Published January 2019. Originally
section.
approved in 1966. Last previous edition approved in 2013 as D2523–13. DOI:
10.1520/D2523_D2523M-13R19E01.
5.2.2 Select materials at random when possible. Compo-
For referenced ASTM standards, visit the ASTM website, www.astm.org, or
nents should be conditioned at 50 6 5% relative humidity and
contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM
25 6 2.5°C [77 6 4.5°F] for 24 h prior to constructing
Standards volume information, refer to the standard’s Document Summary page on
the ASTM website. samples.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
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D2523/D2523M − 13 (2019)
5.2.3 The quantity of material in any layer should be within 7.3 Use a tension testing machine, preferably with auto-
610%, and the entire sample should be within 65% of the matic load and strain recording equipment, and cl
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