ASTM D6241-04(2009)
(Test Method)Standard Test Method for the Static Puncture Strength of Geotextiles and Geotextile-Related Products Using a 50-mm Probe
Standard Test Method for the Static Puncture Strength of Geotextiles and Geotextile-Related Products Using a 50-mm Probe
SIGNIFICANCE AND USE
This test method for determining the puncture strength of geotextiles is to be used by the industry as an index of puncture strength. The use of this test method is to establish an index value by providing standard criteria and a basis for uniform reporting.
This test method is considered satisfactory for acceptance testing of commercial shipments of geotextiles.
In 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 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 that are from a lot of the type in question. The test specimens then should be randomly assigned in equal numbers to each laboratory for testing. The average results from the two laboratories should be compared using Student's t-test for unpaired data and an acceptable probability level chosen by the two parties before the testing is begun. If a bias is found, either its cause must be found and corrected, or the purchaser and the supplier must agree to interpret future test results in the light of the known bias.
This test method is not applicable to materials that are manufactured in sizes that are too small to be placed into the test apparatus in accordance with the procedures in this test method. Furthermore, it is not appropriate to separate plies of a geosynthetic or geocomposite for use in this test method.
SCOPE
1.1 This test method is an index test used to measure the force required to puncture a geotextile and geotextile-related products. The relatively large size of the plunger provides a multidirectional force on the geotextile.
1.2 The values stated in SI units are to be regarded as the standard. The values given in parentheses are 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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Designation: D6241 − 04(Reapproved 2009)
Standard Test Method for the
Static Puncture Strength of Geotextiles and Geotextile-
Related Products Using a 50-mm Probe
This standard is issued under the fixed designation D6241; 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 of other terms relating to geosynthetics used in this test
method, refer to Terminology D4439.
1.1 This test method is an index test used to measure the
force required to puncture a geotextile and geotextile-related 3.2 Definitions of Terms Specific to This Standard:
products. The relatively large size of the plunger provides a 3.2.1 atmoshere for testing geotextiles, n—air maintained at
multidirectional force on the geotextile. a relative humidity of 50 to 70 % and a temperature of 21 6
2°C (70 6 4°F).
1.2 The values stated in SI units are to be regarded as the
3.2.2 geotextile, n—a permeable geosynthetic composed
standard. The values given in parentheses are for information
solely of textiles.
only.
3.2.3 puncture resistance, n—the inherent resisting mecha-
1.3 This standard does not purport to address all of the
nism of the test specimen to the failure by a penetrating or
safety concerns, if any, associated with its use. It is the
puncturing object.
responsibility of the user of this standard to establish appro-
priate safety and health practices and determine the applica-
4. Summary of Test Method
bility of regulatory limitations prior to use.
4.1 A test specimen is clamped without tension between
2. Referenced Documents
circular plates and secured in a tensile or compression testing
machine, or both. A force is exerted against the center of the
2.1 ASTM Standards:
unsupported portion of the test specimen by a steel plunger
D76 Specification for Tensile Testing Machines for Textiles
attached to the load indicator until rupture occurs. The maxi-
D123 Terminology Relating to Textiles
mum force is the value of puncture strength.
D1776 Practice for Conditioning and Testing Textiles
D1883 Test Method for CBR (California Bearing Ratio) of
5. Significance and Use
Laboratory-Compacted Soils
D4354 Practice for Sampling of Geosynthetics for Testing 5.1 This test method for determining the puncture strength
D4439 Terminology for Geosynthetics of geotextiles is to be used by the industry as an index of
E691 Practice for Conducting an Interlaboratory Study to puncture strength. The use of this test method is to establish an
Determine the Precision of a Test Method index value by providing standard criteria and a basis for
uniform reporting.
NOTE 1—Test Method D1883 describes a mold (CBR mold) that can be
used for this test method. 5.2 This test method is considered satisfactory for accep-
tance testing of commercial shipments of geotextiles.
3. Terminology
5.3 In case of a dispute arising from differences in reported
3.1 Definitions—For definitions of other textile terms used
test results when using this test method for acceptance testing
in this test method, refer to Terminology D123. For definitions
of commercial shipments, the purchaser and the supplier
should conduct comparative tests to determine if there is a
statistical bias between their laboratories. Competent statistical
This test method is under the jurisdiction of ASTM Committee D35 on
assistance is recommended for the investigation of bias. As a
Geosynthetics is the direct responsibility of Subcommittee D35.01 on Mechanical
minimum, the two parties should take a group of test speci-
Properties
mens that are as homogeneous as possible and that are from a
CurrenteditionapprovedJune1,2009.PublishedJuly2009.Originallyapproved
lot of the type in question. The test specimens then should be
in 1998. Last previous edition approved in 2004 as D6241 – 04. DOI: 10.1520/
D6241-04R09.
randomly assigned in equal numbers to each laboratory for
For referenced ASTM standards, visit the ASTM website, www.astm.org, or
testing.Theaverageresultsfromthetwolaboratoriesshouldbe
contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM
compared using Student’s t-test for unpaired data and an
Standards volume information, refer to the standard’s Document Summary page on
the ASTM website. acceptable probability level chosen by the two parties before
*A Summary of Changes section appears at the end of this standard
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
D6241 − 04 (2009)
the testing is begun. If a bias is found, either its cause must be securing the ring clamp assemblage is suggested to be 11 mm
found and corrected, or the purchaser and the supplier must (7/16 in.) and equally spaced at a diameter of 220 mm (8.7 in.).
agree to interpret future test results in the light of the known
The surfaces of these plates can consist of grooves with rubber
bias.
O-rings or coarse sandpaper bonded onto opposing surfaces. It
is suggested that 9.5-mm (3/8-in.) bolts be welded to the
5.4 This test method is not applicable to materials that are
bottom plate so that the top plate can be placed over the bolts
manufactured in sizes that are too small to be placed into the
and nuts easily tightened. A guide block may be used to help
test apparatus in accordance with the procedures in this test
seat the material being clamped. Other clamps that eliminate
method. Furthermore, it is not appropriate to separate plies of
slippage are acceptable. See Fig. 2 and Fig. 3.
a geosynthetic or geocomposite for use in this test method.
NOTE 2—Plans for a hydraulic clamping apparatus are on file atASTM.
6. Apparatus
6.1 Testing Machine, must be constant-rate-of extension
7. Sampling
(CRE) type, with autographic recorder conforming to the
requirement of Specification D76. 7.1 Lot Sample—In the absence of other guidelines, divide
the product into lots and take lot samples as specified in
6.2 Plunger, with a flat diameter of 50 mm 6 1 mm with a
Practice D4354.
radial edge of 2.5 mm 6 0.5 mm. See Fig. 1.
7.2 Laboratory Sample—Consider the units in the lot
6.3 Clamping Apparatus, consisting of concentric plates
sample as the units in the laboratory sample. For the laboratory
with an internal diameter of 150 mm (5.9 in.), capable of
sample, take a full width sample of sufficient length along the
clamping the test specimen without slippage (limit slippage of
test specimen to 5 mm). The external diameter is suggested to selvage or edge of the roll so that the requirements of 7.3
be 250 mm (9.8 in.). The diameter of the holes used for through 7.5.2 can be met. Exclude the inner and outer wraps of
NOTE 1—All dimensions are in millimeters.
NOTE 2—This diagram is not to scale.
FIG. 1 Plunger
D6241 − 04 (2009)
NOTE 1—All dimensions are in millimeters.
NOTE 2—This diagram is not to scale.
FIG. 2 Typical Arrangement for Test on Tensile Testing Machine (Method A)
therolloranymaterialcontainingfolds,crushedareas,orother 7.4 Test Specimens—From each unit in the laboratory
distortions not representative of the sample lot. sample, cut the specimens so that the edge of specimen will
extend beyond the edge of the clamp by 10 mm (0.39 in.) in all
7.3 Remove test specimens from the laboratory sample in a
directions.
randomlydistributedpattern
...
This document is not an ASTM standard and is intended only to provide the user of an ASTM standard an indication of what changes have been made to the previous version. Because
it may not be technically possible to adequately depict all changes accurately, ASTM recommends that users consult prior editions as appropriate. In all cases only the current version
of the standard as published by ASTM is to be considered the official document.
Designation:D6241–99 Designation: D 6241 – 04 (Reapproved 2009)
Standard Test Method for the
Static Puncture Strength of Geotextiles and Geotextile-
Related Products Using a 50-mm Probe
This standard is issued under the fixed designation D 6241; 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 *
1.1 This test method is an index test used to measure the force required to puncture a geotextile and geotextile-related products.
The relatively large size of the plunger provides a multidirectional force on the geotextile.
1.2 The values stated in SI units are to be regarded as the standard. The values given in parentheses are 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.
2. Referenced Documents
2.1 ASTM Standards:
D76 Specification for Tensile Testing Machines for Textiles
D 123 Terminology Relating to Textiles
D 1776 Practice for Conditioning Textiles for Testing Practice for Conditioning and Testing Textiles
D 1883 Test Method for CBR (California Bearing Ratio) of Laboratory-Compacted Soils
D 4354 Practice for Sampling of GeotextilesGeosynthetics for Testing
D 4439 Terminology for Geosynthetics Terminology for Geosynthetics
E 691 Practice for Conducting an Interlaboratory Study to Determine the Precision of a Test Method
NOTE 1—Test Method D 1883 describes a mold (CBR mold) that can be used for this test method.
3. Terminology
3.1 Definitions— For definitions of other textile terms used in this test method, refer to Terminology D123.D 123. For
definitions of other terms relating to geosynthetics used in this test method, refer to Terminology D4439.D 4439.
3.2 Definitions of Terms Specific to This Standard:
3.2.1 atmoshere for testing geotextiles, n— air maintained at a relative humidity of 50 to 70 % and a temperature of 21 6 2°C
(70 6 4°F).
3.2.2 geotextile, n—a permeable geosynthetic composed solely of textiles.
3.2.3 puncture resistance, n—the inherent resisting mechanism of the test specimen to the failure by a penetrating or puncturing
object.
4. Summary of Test Method
4.1 Atest specimen is clamped without tension between circular plates and secured in a tensile or compression testing machine,
or both.Aforce is exerted against the center of the unsupported portion of the test specimen by a steel plunger attached to the load
indicator until rupture occurs. The maximum force is the value of puncture strength.
5. Significance and Use
5.1 This test method for determining the puncture strength of geotextiles is to be used by the industry as an index of puncture
strength. The use of this test method is to establish an index value by providing standard criteria and a basis for uniform reporting.
5.2 This test method is considered satisfactory for acceptance testing of commercial shipments of geotextiles.
This test method is under the jurisdiction of ASTM Committee D35 on Geosynthetics is the direct responsibility of Subcommittee D35.01 on Mechanical Properties
Current edition approved Dec. 10, 1999. Published March 2000. Originally published as D6241–98. Last previous edition D6241–98.
Current edition approved June 1, 2009. Published July 2009. Originally approved in 1998. Last previous edition approved in 2004 as D 6241 – 04.
Annual Book of ASTM Standards, Vol. 07.01.
For referencedASTM standards, visit theASTM website, www.astm.org, or contactASTM 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.
*A Summary of Changes section appears at the end of this standard.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.
D 6241 – 04 (2009)
5.3 In 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 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 that are from a lot of the type in question.
The test specimens then should be randomly assigned in equal numbers to each laboratory for testing. The average results from
the two laboratories should be compared using Student’s t-test for unpaired data and an acceptable probability level chosen by the
two parties before the testing is begun. If a bias is found, either its cause must be found and corrected, or the purchaser and the
supplier must agree to interpret future test results in the light of the known bias.
5.4This5.4 This test method is not applicable to materials that are manufactured in sizes that are too small to be placed into the
test apparatus in accordance with the procedures in this test method. Furthermore, it is not appropriate to separate plies of a
geosynthetic or geocomposite for use in this test method.
6. Apparatus
6.1 Testing Machine, must be constant-rate-of extension (CRE) type, with autographic recorder conforming to the requirement
of Specification D76.D 76.
6.2 Plunger, with a flat diameter of 50 mm 6 1 mm with a radial edge of 2.5 mm 6 0.5 mm. See Fig. 1.
6.3 Clamping Apparatus, consisting of concentric plates with an internal diameter of 150 mm (5.9 in.), capable of clamping the
test specimen without slippage (limit slippage of test specimen to 5 mm). The external diameter is suggested to be 250 mm (9.8
in.).The diameter of the holes used for securing the ring clamp assemblage is suggested to be 11 mm (7/16 in.) and equally spaced
at a diameter of 220 mm (8.7 in.). The surfaces of these plates can consist of grooves with rubber O-rings or coarse sandpaper
bonded onto opposing surfaces. It is suggested that 9.5-mm (3/8-in.) bolts be welded to the bottom plate so that the top plate can
beplacedovertheboltsandnutseasilytightened.Aguideblockmaybeusedtohelpseatthematerialbeingclamped.Otherclamps
that eliminate slippage are acceptable. See Fig. 2 and Fig. 3.
NOTE 1—All dimensions are in millimetrers.
NOTE 2—This diagram is not to scale.
FIG. 1 Plunger
D 6241 – 04 (2009)
NOTE 1—All dimensions are in millimetrers.
NOTE 2—This diagram is not to scale.
FIG. 2 Typical Arrangement for Test on Tensile Testing Machine (Method A)
NOTE 2—Plans for a hydraulic clamping apparatus are on file at ASTM.
7. Sampling
7.1 Lot Sample—In the absence of other guidelines, divide the product into lots and take lot samples as specified in Practice
D 4354.
7.2 Laboratory Sample—Consider the units in the lot sample as the units in the laboratory sample. For the laboratory sample,
take a full width sample of sufficient length along the selvage or edge of the roll so that the requirements of 7.3 through 7.5.2 can
be met. Exclude the inner and outer wraps of the roll or any material containing folds, crushed areas, or other distortions not
representative of the sample lot.
D 6241 – 04 (2009)
NOTE 1—All dim
...
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