ASTM D4073-06(2013)

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Designation:D4073 −06 (Reapproved 2013)
Standard Test Method for
Tensile-Tear Strength of Bituminous Roofing Membranes
This standard is issued under the fixed designation D4073; 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 temperature, moisture, and aging may be evaluated by appro-
priate selection of field samples or conditioning of laboratory
1.1 This test method covers the determination of the tensile-
samples, and tests may be conducted in an environmental
tear strength of bituminous roofing membranes.
chamber.
1.2 The values stated in SI units are to be regarded as the
standard. The values given in parentheses are for information
5. Apparatus
only.
5.1 Testing Machine— Universal or standard testing ma-
1.3 This standard does not purport to address all of the
chine with automatic load and strain recording equipment,
safety concerns, if any, associated with its use. It is the
capable of cross-head movement at a constant rate of 2.54
responsibility of the user of this standard to establish appro-
mm/min (0.100 in./min).
priate safety and health practices and determine the applica-
bility of regulatory limitations prior to use.
5.2 Grips—Self-aligning grips or clamps for holding the test
specimen between the stationary member and the movable
2. Referenced Documents
member or cross-head of the testing machine. Jaw faces of the
2.1 ASTM Standards:
grips shall be 75 mm (3.0 in.) wide by 50 mm (2.0 in.) deep,
D95 Test Method for Water in Petroleum Products and shall provide uniform clamping pressure, and shall prevent
Bituminous Materials by Distillation
slippage of the specimen during test.
D2829 Practice for Sampling and Analysis of Existing
5.3 Environmental Chamber—An insulated chamber with
Built-Up Roof Systems
heating and cooling capabilities, designed to enclose the test
D3617 Practice for Sampling andAnalysis of Built-Up Roof
specimenandclampssothatthetemperaturemaybecontrolled
Systems During Application
during a test.
3. Summary of Test Method
6. Sampling
3.1 The tensile-tear strength of a membrane in both longi-
tudinal and transverse directions is determined by measuring 6.1 Field Samples— Field samples shall be taken in accor-
dance with Practice D2829 or D3617 but of a size suitable to
the maximum load when notched specimens of specific dimen-
sions are tested to failure at an arbitrary, fixed, tensile strain provide sufficient material for testing in both the machine and
cross-machine directions. In cases where field applied aggre-
rate.
gate is in place, it shall be removed with a hot scraper such as
4. Significance and Use
a putty knife without damaging the top felt. In cases where the
insulation facer is a part of the membrane system it should be
4.1 Determining the tensile-tear strength of laboratory and
included and so reported.
field samples of roofing membranes should be useful in
developing performance criteria, and as one basis for compari-
6.2 Laboratory Samples:
son of different materials and systems. The effects of
6.2.1 Condition all components at 23 6 2°C (74 6 4°F) and
50 6 5 % relative humidity for a minimum of 72 h prior to
constructing the membrane sample.
This test method is under the jurisdiction ofASTM Committee D08 on Roofing
and Waterproofing and is the direct responsibility of Subcommittee D08.20 on
6.2.2 Prepare sample membranes approximately 300 by 500
Roofing Membrane Systems.
mm (12 by 20 in.) as required by the roof specifications being
Current edition approved May 1, 2013. Published May 2013. Originally
tested, exclusive of aggregate.
approved in 1981. Last previous edition approved in 2006 as D4073 – 06. DOI:
10.1520/D4073-06R13.
6.2.3 The quantity of bitumen in any layer shall be within
For referenced ASTM standards, visit the ASTM website, www.astm.org, or
10 % of the quantity specified and the entire sample shall be
contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM
within 5 %. (These requirements apply to laboratory prepared
Standards volume information, refer to the standard’s Document Summary page on
the ASTM website. samples only.)
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