Standard Test Method for Evaluating the Unconfined Tension Creep Behavior of Geosynthetics

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1.1 This test method is intended for use in determining the unconfined tension creep behavior of geosynthetics at constant temperature when subjected to a sustained tensile loading. This test method is applicable to all geosynthetics.
1.2 The test method measures total elongation of the geosynthetic test specimen, from the time of loading, while being maintained at a constant temperature. It includes procedures for measuring the tension creep behavior at constant temperature of conditioned geosynthetics as well as directions for calculating tension creep curves.
1.3 The values stated in SI units are to be regarded as the standard. The values given in parentheses are for information only.
1.4 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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Publication Date
09-Dec-2002
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ASTM D5262-02a - Standard Test Method for Evaluating the Unconfined Tension Creep Behavior of Geosynthetics
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NOTICE: This standard has either been superseded and replaced by a new version or withdrawn.
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Designation: D 5262 – 02a
Standard Test Method for
Evaluating the Unconfined Tension Creep Behavior of
1
Geosynthetics
This standard is issued under the fixed designation D 5262; 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.
4
1. Scope Strength of Geomembranes Using Wide Strip Testing
E 6 Terminology Relating to Methods of Mechanical Test-
1.1 This test method is intended for use in determining the
5
ing
unconfined tension creep behavior of geosynthetics at constant
temperature when subjected to a sustained tensile loading. This
3. Terminology
test method is applicable to all geosynthetics.
3.1 Definitions—For definitions of many terms used in this
1.2 The test method measures total elongation of the geo-
test method, refer to Terminologies D 123, D 4439 and E 6.
synthetic test specimen, from the time of loading, while being
3.2 Descriptions of Terms Specific to This Standard:
maintained at a constant temperature. It includes procedures
3.2.1 atmosphere for testing geosynthetics, n—air main-
for measuring the tension creep behavior at constant tempera-
tained at a relative humidity between 50 and 70 % and
ture of conditioned geosynthetics as well as directions for
temperature of 21 6 2°C (70 6 4°F).
calculating tension creep curves.
3.2.2 creep, n—the time-dependent increase in accumula-
1.3 The values stated in SI units are to be regarded as the
tive strain in a material resulting from an applied constant
standard. The values given in parentheses are for information
force.
only.
3.2.3 design load—the load at which the geosynthetic is
1.4 This standard does not purport to address all of the
required to operate in order to perform its intended function.
safety concerns, if any, associated with its use. It is the
3.2.4 failure, n—an arbitrary point at which a material
responsibility of the user of this standard to establish appro-
ceases to be functionally capable of its intended use.
priate safety and health practices and determine the applica-
3.2.5 geogrid, n—a geosynthetic formed by a regular net-
bility of regulatory limitations prior to use.
work of integrally connected elements with apertures greater
1
2. Referenced Documents than 6.35 mm ( ⁄4 in.) to allow interlocking with surrounding
soil, rock, earth, and other surrounding materials to function
2.1 ASTM Standards:
2
primarily as reinforcement.
D 123 Terminology Relating to Textiles
2 3.2.6 geomembrane, n—an essentially impermeable geo-
D 1776 Practice for Conditioning Textiles for Testing
synthetic composed of one or more synthetic sheets.
D 1909 Table for Commercial Moisture Regains for Textile
2 3.2.6.1 Discussion—In geotechnical engineering, essen-
Fibers
tially impermeable means that no measurable liquid flows
D 2990 Test Methods for Tensile, Compressive, and Flex-
3 through a geosynthetic when tested in accordance with Test
ural Creep and Creep Rupture of Plastics
4
Methods D 4491.
D 4354 Practice for Sampling of Geosynthetics for Testing
4 3.2.7 geosynthetic, n—a planar product manufactured from
D 4439 Terminology for Geosynthetics
polymeric material used with soil, rock, earth, or other geo-
D 4491 Test Methods for Water Permeability of Geotextiles
4 technical engineering-related material as an integral part of a
by Permittivity
man-made project, structure, or system.
D 4595 Test Method for Tensile Properties of Geotextiles
4
3.2.8 geotextile, n—a permeable geosynthetic comprised
by the Wide-Width Strip Method
solely of textiles.
D 4885 Test Method for Determining Performance Tensile
3.2.8.1 Discussion—Current manufacturing techniques pro-
duce nonwoven fabrics, knitted (non-tubular) fabrics, and
1
woven fabrics.
This test method is under the jurisdiction of ASTM Committee D35 on
Geosynthetics and is the direct responsibility of Subcommittee D35.02 on Endur-
3.2.9 index test, n—a test procedure that may contain a
ance Properties.
known bias, but that may be used to establish an order for a set
Current edition approved Dec. 10, 2002. Published February 2003. Originally
of specimens with respect to the property being measured.
approved in 1992. Last previous edition approved in 2002 as D 5262 – 02.
2
Annual Book of ASTM Standards, Vol 07.01.
3
Annual Book of ASTM Standards, Vol 08.02.
4 5
Annual Book of ASTM Standards, Vol 04.13. Annual Book of ASTM Standards, Vol 03.01.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.
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D 5262 – 02a
3.2.10 rate of creep, n—the slope of the creep-time curve at the specimen. It is r
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