ASTM D7275-06
(Test Method)Standard Test Method for Tensile Properties of Bituminous Geomembranes (BGM)
Standard Test Method for Tensile Properties of Bituminous Geomembranes (BGM)
SCOPE
1.1 This test method is used to measure the tensile properties of bituminous geomembranes (BGM) using a dumbbell shape specimen.
1.2 The values stated in SI units are to be regarded as standard. The values given in parentheses are for information only.
This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use.
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Designation:D7275–06
Standard Test Method for
Tensile Properties of Bituminous Geomembranes (BGM)
This standard is issued under the fixed designation D 7275; 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.
1. Scope 4.2 This test method uses a dumbbell specimen. The shape
and dimensions of the specimen are defined in this standard.
1.1 This test method is used to measure the tensile proper-
No other shape or dimensions are allowed. Other mechanical
ties of bituminous geomembranes (BGM) using a dumbbell
properties of BGM may be measured using different test
shape specimen.
methods. Refer to Guide D 6455.
1.2 The values stated in SI units are to be regarded as
4.3 The reported properties are the tensile strength at break
standard. The values given in parentheses are for information
and elongation at break.
only.
1.3 This standard does not purport to address all of the
5. Apparatus
safety concerns, if any, associated with its use. It is the
5.1 Tensile instrumentation shall meet the requirements
responsibility of the user of this standard to establish appro-
outlined in Test Method D 638.
priate safety and health practices and determine the applica-
5.2 Grips—One of the grips must be self aligning to
bility of regulatory limitations prior to use.
compensate for uneven distribution of force across the speci-
2. Referenced Documents men. The clamping force and the clamp surfaces shall hold the
specimen firmly without causing damage.
2.1 ASTM Standards:
5.3 Grip Faces—Grip faces shall be a minimum of 50 mm
D 638 Test Method for Tensile Properties of Plastics
(2 in.) wide and a minimum of 50 mm (2 in.) in length. Smooth
D 4354 Practice for Sampling of Geosynthetics for Testing
rubber, fine serrated or coarse serrated grip faces have all been
D 4439 Terminology for Geosynthetics
found to be suitable for testing BGM. If needed, the use of a
D 6455 Guide for the Selection of Test Methods for Prefab-
silicone-coated paper to help holding the specimen ends into
ricated Bituminous Geomembranes (PBGM)
the grips is recommended. The silicone-coated side is to be
3. Terminology used in contact with the specimen.
3.1 Definition of Term Specific to This Standard:
6. Sampling and Test Specimens
3.1.1 prefabricated bituminous geomembrane (BGM), n—a
6.1 Sampling shall be conducted according to Practice
material fabricated in a plant and consisting principally of
D 4354.
non-woven geotextile, impregnated by a blend of oxidized or
6.2 Take a sample that will exclude material from the outer
polymer-modified bitumen incorporating filler.
wrap of the roll or the inner wrap around the core. In the case
3.2 For definitions of other terms used in this test method,
where the sample is taken at the production site, material from
refer to Terminology D 4439.
the outer wrap may be used if it is undamaged.
4. Significance and Use 6.3 Test Specimens—Prepare five specimens with the length
ofthespecimenparalleltothemachinedirection(MD)andfive
4.1 This method is used to evaluate the tensile properties of
specimens with the length parallel to the cross-machine direc-
BGM. It can be used for manufacturing quality control or
tion (XD).
acceptance testing.
6.4 The specimens shall be cut using an appropriate die to
the shape, dimensions, and tolerances presented in Fig. 1.
This test method is under the jurisdiction of ASTM Committee D35 on
Geosynthetics and is the direct responsibility of Subcommittee D35.10 on Geomem-
7. Conditioning and Testi
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