ASTM D5261-92(2003)
(Test Method)Standard Test Method for Measuring Mass per Unit Area of Geotextiles
Standard Test Method for Measuring Mass per Unit Area of Geotextiles
SIGNIFICANCE AND USE
This test method is used to determine if the geotextile material meets specifications for mass per unit area. This test method can be used for quality control to determine specimen conformance. This measurement allows for a simple control of the delivered material by a comparison of the mass per unit area of the delivered material and the specified mass per unit area.
The procedure in this test method may be used for acceptance testing of commercial shipments, but caution is advised since information about between-laboratory precision is incomplete. Comparative tests in accordance with 5.2.1 are advisable.
5.2.1 In case of a dispute arising from differences in reported test results when using the procedures in this test method for acceptance testing of commercial shipments, the purchaser and the manufacturer should conduct comparative tests to determine if there is a statistical bias between their laboratories. Competent statistical assistance is recommended for the investigation of bias. As a minimum, the two parties should take a group of test specimens that are as homogeneous as possible and which are from a lot of material of the type in question. The test specimen should then be randomly assigned in equal numbers to each laboratory for testing. The average results from the two laboratories should be compared using the appropriate student’ t-test and an acceptable probability level chosen by the two parties before testing is begun. If a bias is found, either its cause must be found and corrected or the purchaser and the manufacturer must agree to interpret future test results in light of the known bias.
SCOPE
1.1 This test method can be used as an index to the determination of mass per unit area of all geotextiles.
1.2 The values stated in SI units or other units shall be regarded separately as standard. The values stated in parentheses are provided for information only.
1.3 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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Standards Content (Sample)
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Designation:D5261–92(Reapproved 2003)
Standard Test Method for
Measuring Mass per Unit Area of Geotextiles
This standard is issued under the fixed designation D 5261; 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 3.2 For definitions of other textile terms used in this test
method, refer to Terminology D 123.
1.1 This test method can be used as an index to the
3.3 Fordefinitionsofothertermsrelatingtogeotextilesused
determination of mass per unit area of all geotextiles.
in this test method, refer to Terminology D 4439.
1.2 The values stated in SI units or other units shall be
regarded separately as standard. The values stated in parenthe-
4. Summary of Test Method
ses are provided for information only.
4.1 The mass per unit area of a geotextile is determined by
1.3 This standard does not purport to address all of the
weighing test specimens of known dimensions, cut from
safety concerns, if any, associated with its use. It is the
various locations over the full width of the laboratory sample.
responsibility of the user of this standard to establish appro-
The calculated values are then averaged to obtain the mean
priate safety and health practices and determine the applica-
mass per unit area of the laboratory sample.
bility of regulatory limitations prior to use.
5. Significance and Use
2. Referenced Documents
5.1 This test method is used to determine if the geotextile
2.1 ASTM Standards:
material meets specifications for mass per unit area. This test
D 123 Terminology Relating to Textiles
method can be used for quality control to determine specimen
D 1776 Practice for Conditioning Textiles for Testing
conformance. This measurement allows for a simple control of
D 4354 Practice for Sampling of Geosynthetics for Testing
the delivered material by a comparison of the mass per unit
D 4439 Terminology for Geotextiles
area of the delivered material and the specified mass per unit
2.2 ISO/DIS Document:
2 area.
9864-1990 Mass per Unit Area of Geotextiles
5.2 The procedure in this test method may be used for
3. Terminology acceptance testing of commercial shipments, but caution is
advised since information about between-laboratory precision
3.1 Definitions:
is incomplete. Comparative tests in accordance with 5.2.1 are
3.1.1 atmosphere for testing geotextiles, n— air maintained
advisable.
at a relative humidity of 65 6 5 % and temperature of 21 6
5.2.1 In case of a dispute arising from differences in
2°C (70 6 4°F).
reported test results when using the procedures in this test
3.1.2 geosynthetic, n—a planar product manufactured from
method for acceptance testing of commercial shipments, the
polymeric material used with soil, rock, earth, or other
purchaser and the manufacturer should conduct comparative
geotechnical-engineering-related material as an integral part of
tests to determine if there is a statistical bias between their
a man-made project, structure, or system.
laboratories. Competent statistical assistance is recommended
3.1.3 geotextile, n—any permeable textile used with foun-
for the investigation of bias. As a minimum, the two parties
dation, soil, rock, earth, or any other geotechnical-engineering-
should take a group of test specimens that are as homogeneous
related material as an integral part of a man-made project,
as possible and which are from a lot of material of the type in
structure, or system.
question. The test specimen should then be randomly assigned
3.1.4 Discussion—Current textile manufacturing techniques
in equal numbers to each laboratory for testing. The average
produce: nonwoven fabrics, knitted (non-tabular) fabrics, and
results from the two laboratories should be compared using the
woven fabrics.
appropriate student’s t-test and an acceptable probability level
chosen by the two parties before testing is begun. If a bias is
This test method is under the jurisdiction of ASTM Committee D35 on
found, either its cause must be found and corrected or the
Geosynthetics and is the direct responsibility of Subcommittee D35.01 on Mechani-
purchaser and the manufacturer must agree to interpret future
cal Properties.
test results in light of the known bias.
Current edition approved June 15, 1992. Published August 1992.
Available from ISO Case Postale 56, CH-1211, Geneva 20, Switzerland.
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D5261–92 (2003)
it may be sufficient in routine testing to expose the material to the standard
6. Apparatus
atmosphere for testing for a reasonable period of time before the
6.1 Balance, calibrated, capable of weighing to 5000 g, with
specimens are test
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