ASTM D4073-94(1998)e1

NOTICE: This standard has either been superseded and replaced by a new version or withdrawn.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.
e1
Designation: D 4073 – 94 (Reapproved 1998)
AMERICAN SOCIETY FOR TESTING AND MATERIALS
100 Barr Harbor Dr., West Conshohocken, PA 19428
Reprinted from the Annual Book of ASTM Standards. Copyright ASTM
Standard Test Method for
Tensile-Tear Strength of Bituminous Roofing Membranes
This standard is issued under the fixed designation D 4073; 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 (e) indicates an editorial change since the last revision or reapproval.
e NOTE—Editorially switched from English dominant to SI dominant.
1. Scope 5. Apparatus
1.1 This test method covers the determination of the tensile- 5.1 Testing Machine—Universal or standard testing ma-
tear strength of bituminous roofing membranes. chine with automatic load and strain recording equipment,
1.2 The values stated in SI units are to be regarded as the capable of cross-head movement at a constant rate of 2.54
standard. The values given in parentheses are for information mm/min (0.100 in./min).
only. 5.2 Grips—Self-aligning grips or clamps for holding the
1.3 This standard does not purport to address all of the test specimen between the stationary member and the movable
safety concerns, if any, associated with its use. It is the member or cross-head of the testing machine. Jaw faces of the
responsibility of the user of this standard to establish appro- grips shall be 75 mm (3.0 in.) wide by 50 mm (2.0 in.) deep,
priate safety and health practices and determine the applica- shall provide uniform clamping pressure, and shall prevent
bility of regulatory limitations prior to use. slippage of the specimen during test.
5.3 Environmental Chamber—An insulated chamber with
2. Referenced Documents
heating and cooling capabilities, designed to enclose the test
2.1 ASTM Standards: specimen and clamps so that the temperature may be controlled
D 95 Test Method for Water in Petroleum Products and
during a test.
Bituminous Materials by Distillation
6. Sampling
D 2829 Practice for Sampling and Analysis of Built-Up
Roofs 6.1 Field Samples—Field samples shall be taken in accor-
D 3617 Practice for Sampling and Analysis of New dance with Practice D 2829 or D 3617 but of a size suitable to
Built-Up Roof Membranes provide sufficient material for testing in both the machine and
cross-machine directions. In cases where field applied aggre-
3. Summary of Test Method
gate is in place, it shall be removed with a hot scraper such as
3.1 The tensile-tear strength of a membrane in both longi- a putty knife without damaging the top felt. In cases where the
tudinal and transverse directions is determined by measuring
insulation facer is a part of the membrane system it should be
the maximum load when notched specimens of specific dimen- included and so reported.
sions are tested to failure at an arbitrary, fixed, tensile strain
6.2 Laboratory Samples:
rate. 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
4. Significance and Use
constructing the membrane sample.
4.1 Determining the tensile-tear strength of laboratory and
6.2.2 Prepare sample membranes approximately 300 by 500
field samples of roofing membranes should be useful in
mm (12 by 20 in.) as required by the roof specifications being
developing performance criteria, and as one basis for compari-
tested, exclusive of aggregate.
son of different materials and systems. The effects of tempera-
6.2.3 The quantity of bitumen in any layer shall be within
ture, moisture, and aging may be evaluated by appropriate
10 % of the quantity specified and the entire sample shall be
selection of field samples or conditioning of laboratory
within 5 %. (These requirements apply to laboratory prepared
samples, and tests may be conducted in an environmental
samples only.)
chamber.
7. Test Specimen
1 7.1 Cut at least three test specimens, in each orientation to
This test method is under the jurisdiction of ASTM Committee D-8 on Roofing,
Waterproofing, a
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