ASTM D5261-92(2009)
(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.
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's 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)
NOTICE: This standard has either been superseded and replaced by a new version or withdrawn.
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Designation:D5261–92(Reapproved 2009)
Standard Test Method for
Measuring Mass per Unit Area of Geotextiles
This standard is issued under the fixed designation D5261; 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 3.1.4 Discussion—Currenttextilemanufacturingtechniques
produce: nonwoven fabrics, knitted (non-tabular) fabrics, and
1.1 This test method can be used as an index to the
woven fabrics.
determination of mass per unit area of all geotextiles.
3.2 For definitions of other textile terms used in this test
1.2 The values stated in SI units or other units shall be
method, refer to Terminology D123.
regarded separately as standard. The values stated in parenthe-
3.3 Fordefinitionsofothertermsrelatingtogeotextilesused
ses are provided for information only.
in this test method, refer to Terminology D4439.
1.3 This standard does not purport to address all of the
safety concerns, if any, associated with its use. It is the
4. Summary of Test Method
responsibility of the user of this standard to establish appro-
4.1 The mass per unit area of a geotextile is determined by
priate safety and health practices and determine the applica-
weighing test specimens of known dimensions, cut from
bility of regulatory limitations prior to use.
various locations over the full width of the laboratory sample.
2. Referenced Documents The calculated values are then averaged to obtain the mean
2 mass per unit area of the laboratory sample.
2.1 ASTM Standards:
D123 Terminology Relating to Textiles
5. Significance and Use
D1776 Practice for Conditioning and Testing Textiles
5.1 This test method is used to determine if the geotextile
D4354 Practice for Sampling of Geosynthetics for Testing
material meets specifications for mass per unit area. This test
D4439 Terminology for Geosynthetics
method can be used for quality control to determine specimen
2.2 ISO/DIS Document:
3 conformance. This measurement allows for a simple control of
ISO/DIS 9864-1990 Mass per Unit Area of Geotextiles
the delivered material by a comparison of the mass per unit
3. Terminology area of the delivered material and the specified mass per unit
area.
3.1 Definitions:
5.2 The procedure in this test method may be used for
3.1.1 atmosphere for testing geotextiles, n— air maintained
acceptance testing of commercial shipments, but caution is
at a relative humidity of 65 6 5 % and temperature of 21 6
advised since information about between-laboratory precision
2°C (70 6 4°F).
is incomplete. Comparative tests in accordance with 5.2.1 are
3.1.2 geosynthetic, n—a planar product manufactured from
advisable.
polymeric material used with soil, rock, earth, or other
5.2.1 In case of a dispute arising from differences in
geotechnical-engineering-related material as an integral part of
reported test results when using the procedures in this test
a man-made project, structure, or system.
method for acceptance testing of commercial shipments, the
3.1.3 geotextile, n—any permeable textile used with foun-
purchaser and the manufacturer should conduct comparative
dation, soil, rock, earth, or any other geotechnical-engineering-
tests to determine if there is a statistical bias between their
related material as an integral part of a man-made project,
laboratories. Competent statistical assistance is recommended
structure, or system.
for the investigation of bias. As a minimum, the two parties
should take a group of test specimens that are as homogeneous
This test method is under the jurisdiction of ASTM Committee D35 on
as possible and which are from a lot of material of the type in
Geosynthetics and is the direct responsibility of Subcommittee D35.01 on Mechani-
question. The test specimen should then be randomly assigned
cal Properties.
in equal numbers to each laboratory for testing. The average
CurrenteditionapprovedJune1,2009.PublishedJuly2009.Originallyapproved
in 1992. Last previous edition approved in 2003 as D5261 – 92 (2003). DOI:
results from the two laboratories should be compared using the
10.1520/D5261-92R09.
appropriate student’s t-test and an acceptable probability level
For referenced ASTM standards, visit the ASTM website, www.astm.org, or
chosen by the two parties before testing is begun. If a bias is
contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM
Standards volume information, refer to the standard’s Document Summary page on found, either its cause must be found and corrected or the
the ASTM website.
Available from ISO Case Postale 56, CH-1211, Geneva 20, Switzerland.
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D5261–92 (2009)
reached. While such a procedure cannot be accepted in cases of dispute,
purchaser and the manufacturer must agree to interpret future
itmaybesuffic
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