ASTM D6364-06
(Test Method)Standard Test Method for Determining Short-Term Compression Behavior of Geosynthetics
Standard Test Method for Determining Short-Term Compression Behavior of Geosynthetics
SIGNIFICANCE AND USE
The compression behavior test for geosynthetics is intended to be an index test. It is anticipated that the results of the compression behavior test will be used to evaluate product. The results of the analyses may also be used to compare the relative compressive yield points of materials that exhibit a detectable compressive yield point. It is anticipated that this test will be used for quality control testing to evaluate uniformity and consistency within a lot or between lots where sample geometry factors (for example, thickness) or materials may have changed.
Note 1—This is a one-dimensional test for compressive loading of a geosynthetic(s) in one plane.
5.1.1 The compressive yield point of geosynthetics may be evaluated from the stress/strain relationship. Many materials exhibit compressive deformation but may not show a distinct compressive yield point.
This test method can be used to evaluate the short-term stress/strain behavior of geosynthetics under compressive stress while loaded at a constant rate of deformation.
This test method may be used for acceptance testing of commercial shipments of geosynthetics but caution is advised because interlab testing is incomplete.
5.3.1 In the case of a dispute arising from differences in reported test results when using this test method for acceptance testing of commercial shipments, the purchaser and the supplier should conduct comparative tests to determine if there is statistical bias between their laboratories. Competent statistical assistance is recommended for the investigation of bias. As a minimum, two parties should take a group of test specimens from material shipped to the project. The test specimens 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 Student’t-test for unpaired data and an acceptable probability level chosen by the two parties before the testing is begun. If bias is found, eit...
SCOPE
1.1 This test method covers the procedures for evaluation of the deformations of a geosynthetic or combination of geosynthetics (that is, geocomposite (excluding geotextiles, geomembranes, and geosynthetic clay liners)) under short-term compressive loading. This test method is strictly an index test method to be used to verify the compressive strength consistency of a given manufactured geosynthetic(s). Results from this test method should not be considered as an indication of actual or long-term performance of the geosynthetic(s) in field applications.
1.2 Since these geosynthetics may experience muti-directional compressive loadings in the field, this test method will not show actual field performance and should not be used for this specific objective. The evaluator of the results should also recognize that the determination of the short-term single plane compressive behavior of geosynthetics does not reflect the installed performance of synthetic drainage systems and, therefore, should not be used as the only method of product specification or performance with respect to synthetic drainage systems.
This standard does not purport to address all the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate health and safety practices and to determine the applicability of regulatory limitations prior to use.
1.3 The values in SI units are to be regarded as the standard. Values in inch-pound units are provided in parentheses for information.
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Designation:D6364–06
Standard Test Method for
Determining Short-Term Compression Behavior of
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Geosynthetics
This standard is issued under the fixed designation D6364; 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 D4439 Terminology for Geosynthetics
D5199 Test Method for Measuring the Nominal Thickness
1.1 This test method covers the procedures for evaluation of
of Geosynthetics
the deformations of a geosynthetic or combination of geosyn-
D7001 Specification for Geocomposites for Pavement Edge
thetics (that is, geocomposite (excluding geotextiles, geomem-
Drains and Other High-Flow Applications
branes, and geosynthetic clay liners)) under short-term com-
pressive loading. This test method is strictly an index test
3. Terminology
method to be used to verify the compressive strength consis-
3.1 Definitions:
tency of a given manufactured geosynthetic(s). Results from
3.1.1 compressive deformation, [L], n—the decrease in
this test method should not be considered as an indication of
gage length produced in the test specimen by a compressive
actual or long-term performance of the geosynthetic(s) in field
load.
applications.
3.1.2 compressive strain, [nd], n—the ratio of compressive
1.2 Since these geosynthetics may experience muti-
deformation to the gage length of the test specimen.
directional compressive loadings in the field, this test method
3.1.3 gage length, [L], n—in compression testing, the mea-
will not show actual field performance and should not be used
sured thickness of the test specimen under specified compres-
for this specific objective. The evaluator of the results should
sional force, expressed in units of length prior to compressive
also recognize that the determination of the short-term single
loading. (D5199)
plane compressive behavior of geosynthetics does not reflect
3.1.4 geocomposite, n—a product fabricated from any com-
the installed performance of synthetic drainage systems and,
bination of geosynthetics with geotechnical materials or other
therefore, should not be used as the only method of product
synthetics that is used in a geotechnical application.
specification or performance with respect to synthetic drainage
3.1.5 geosynthetic, n—a planar product manufactured from
systems.
polymeric material used with foundation, soil, rock, earth, or
1.3 This standard does not purport to address all the safety
any other geotechnical engineering-related material as an
concerns, if any, associated with its use. It is the responsibility
integral part of a man-made project, structure, or system.
of the user of this standard to establish appropriate health and
(D4439)
safety practices and to determine the applicability of regula-
3.1.6 index test, n—a test procedure that may contain a
tory limitations prior to use.
known bias but that may be used to establish an order for a set
1.4 The values in SI units are to be regarded as the standard.
of specimens with respect to the property of interest.
Values in inch-pound units are provided in parentheses for
(D4439)
information.
3.1.7 yield point, n—the first point on the load-deformation
2. Referenced Documents curve at which an increase in deformation occurs without a
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corresponding increase in load.
2.1 ASTM Standards:
3.1.7.1 Discussion—Some geosynthetics do not exhibit an
D4354 Practice for Sampling of Geosynthetics for Testing
exact yield point. The tested geosynthetic may exhibit a less
steep slope at yield. In addition, it should be stated that the
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This test method is under the jurisdiction of ASTM Committee D35 on
yield point may also be the ultimate strength of the geosyn-
Geosynthetics and is the direct responsibility of Subcommittee D35.01 on Mechani-
thetic.
cal Properties.
3.1.8 For definitions of terms relating to geotextiles, refer to
Current edition approved Nov. 15, 2006. Published December 2006. Originally
approved in 1999. Last previous edition approved in 2004 as D6364 - 99(2004).
Terminology D4439
DOI: 10.1520/D6364-06.
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For referenced ASTM standards, visit the ASTM website, www.astm.org, or
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
the ASTM website.
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D6364–06
not have the capability of adjusting the rate of deformation to the specific
4. Summary of Test Method
rate required. For these instruments, the user and producer should
4.1 Specimen
...
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