ASTM D7051-05(2020)

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:D7051 −05 (Reapproved 2020)
Standard Test Method for
Cyclic Thermal Shock of SBS-Modified Bituminous Roofing
Sheets with Factory-Applied Metal Surface
This standard is issued under the fixed designation D7051; 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.
1. Scope the specimen length dimension is measured in relation to the
numberofcyclesandtemperaturevariation.Thistestappliesto
1.1 This test method covers the measurement of movement
metal foil surfaced SBS-modified bitumen roofing sheets.
due to cyclic thermal exposure of SBS (styrene-butadiene-
styrene)-modified bituminous sheets with a factory-applied
4. Significance and Use
metal foil surface.
4.1 This test method is used to determine the dimensional
1.2 The values stated in SI units are to be regarded as
changes and physical stability of the product upon exposure to
standard. The values in parentheses are for information only.
specified cyclic thermal conditions. It is also useful in deter-
1.3 This standard does not purport to address all of the mining the integrity of the bond between the metal foil and the
safety concerns, if any, associated with its use. It is the SBS-modified bituminous compound.
responsibility of the user of this standard to establish appro-
5. Apparatus
priate safety, health, and environmental practices and deter-
mine the applicability of regulatory limitations prior to use. 5.1 The apparatus and test assembly as shown in Figs. 1-4
consist of the following components.
1.4 This international standard was developed in accor-
dance with internationally recognized principles on standard-
5.2 A hollow metal, rigid support or base on which the test
ization established in the Decision on Principles for the
sampleismounted,hereafterreferredtoastheshocktable.The
Development of International Standards, Guides and Recom-
base shall be 2110 6 25 mm long by 280 6 25 mm wide by
mendations issued by the World Trade Organization Technical
125 6 13 mm tall (83 6 1.0 in. long by 11 6 1.0 in. wide by
Barriers to Trade (TBT) Committee.
5 6 0.5 in. tall). The shock table shall have water inlet and
outlet attachments mounted such that the support is always full
2. Referenced Documents
of circulating water. This is done to avoid expansion or
2.1 ASTM Standards:
contraction of the shock table during the test.
C552 Specification for Cellular Glass Thermal Insulation NOTE 1—The support can be easily constructed by welding two pieces
of wide channel iron together with the addition of end plates.
D41/D41M Specification for Asphalt Primer Used in
Roofing, Dampproofing, and Waterproofing
5.3 Mounting brackets for the measuring devices shall be
D312/D312M Specification for Asphalt Used in Roofing
attached to the shock table such that the measuring device is
D5147/D5147M Test Methods for Sampling and Testing
level with and facing the metal reference tabs attached to the
Modified Bituminous Sheet Material
foil surface of the specimens (see 6.4).
5.4 Linear transducers, or dial indicators, accurate to 10 µm
3. Summary of Test Method
(0.4 mil) shall be used to measure the change in distance
3.1 This test consists of exposing two specimens of 2000 6
between the adhered metal reference tab and the mounted
5by90 6 5 mm (78.7 6 0.2 by 3.5 6 0.2 in.) to cycles of
indicator.
temperature produced by infrared radiation. The variation in
5.5 Six or more 250 W infrared heating lamps are mounted
above the support equally spaced across the 2000 mm (79 in.)
This test method is under the jurisdiction ofASTM Committee D08 on Roofing
test length.
andWaterproofingandisthedirectresponsibilityofSubcommitteeD08.04onFelts,
NOTE 2—The number of lamps is not critical as long as the temperature
Fabrics and Bituminous Sheet Materials.
is accurate and consistent.
Current edition approved Oct. 1, 2020. Published October 2020. Originally
5.6 Sheet metal panels, or other suitable protection, shall be
approved in 2005. Last previous edition approved in 2013 as D7051 – 05 (2013).
DOI: 10.1520/D7051-05R20.
mounted on the sides and ends of the hollow support to reduce
For referenced ASTM standards, visit the ASTM website, www.astm.org, or
drafts and temperature fluctuations during the test. The panels
contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM
should be easily removed to allow for daily observations of the
Standards volume information, refer to the standard’s Document Summary page on
the ASTM website. test assembly.
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D7051−05 (2020)
FIG. 1Shock Table—Top View
FIG. 2Shock Table—End Views
5.7 Aregulating system shall be used to maintain the timing cation D312/D312M Type IV asphalt applied at 218 6 14 °C
of the heating and cooling cycles. Temperature may be (425 6 25 °F). The specimens are applied parallel to each
maintained automatically or manually, but the temperature other, and shall be separated by a distance of 40 6 10 mm (1.6
shall be measured using thermocouples. 60.4in.).Ifpolyolefinfilmbackingexists,itshallbecarefully
melted away and dusted with a parting agent before applying
6. Preparation of Apparatus
the specimens with asphalt.
6.1 The top surface of the shock table shall be primed with
6.4 Metal reference tabs, minimum 0.5 mm (28 ga) thick,
Specification D41/D41M asphalt primer and allowed to dry.
shall be attached to the foil surface at both ends of eac
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