ASTM D6241-22a

Standard Test Method for Measuring Static Puncture Strength of Geotextiles and Geosynthetic-Related Products Using a 50 mm Probe

SIGNIFICANCE AND USE
5.1 Puncture using a 50 mm probe is applicable to determine the index strength resistance and deformation of a particular geotextile or geotextile-related products.  
5.2 This test method is considered satisfactory for acceptance testing of commercial shipments of geotextiles.  
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 light of the known bias.  
5.4 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.
SCOPE
1.1 This test method is an index test used to measure the force required to puncture a geotextile and geotextile-related products with a 50 mm diameter cylindrical probe. The dimensions of the probe provide a multidirectional force on the geotextile.
Note 1: This test is also commonly known as CBR Puncture Test.  
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, health, and environmental practices and determine the applicability of regulatory limitations prior to use.  
1.4 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.

General Information

• Status: Published
• Publication Date: 30-Nov-2022
• ICS: 59.080.70 - Geotextiles
• Technical Committee: D35 - Geosynthetics
• Drafting Committee: D35.01 - Mechanical Properties

Relations

• Refers: ASTM D1776/D1776M-20 - Standard Practice for Conditioning and Testing Textiles
• Effective Date: 01-Feb-2020
• Refers: ASTM D4354-12(2020) - Standard Practice for Sampling of Geosynthetics and Rolled Erosion Control Products (RECPs) for Testing
• Effective Date: 01-May-2020

Standards Content (Sample)

This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the
Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.
Designation: D6241 − 22a
Standard Test Method for
Measuring Static Puncture Strength of Geotextiles and
1
Geosynthetic-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 D4354 Practice for Sampling of Geosynthetics and Rolled
Erosion Control Products (RECPs) for Testing
1.1 This test method is an index test used to measure the
D4439 Terminology for Geosynthetics
force required to puncture a geotextile and geotextile-related
E691 Practice for Conducting an Interlaboratory Study to
products with a 50 mm diameter cylindrical probe. The
Determine the Precision of a Test Method
dimensions of the probe provide a multidirectional force on the
geotextile.
NOTE 2—Test Method D1883 describes a mold (CBR mold) that can be
used for this test method.
NOTE 1—This test is also commonly known as CBR Puncture Test.
1.2 The values stated in SI units are to be regarded as the
3. Terminology
standard. The values given in parentheses are for information
3.1 Definitions—For definitions of other textile terms used
only.
in this test method, refer to Terminology D123. For definitions
1.3 This standard does not purport to address all of the
of other terms relating to geosynthetics used in this test
safety concerns, if any, associated with its use. It is the
method, refer to Terminology D4439.
responsibility of the user of this standard to establish appro-
priate safety, health, and environmental practices and deter-
4. Summary of Test Method
mine the applicability of regulatory limitations prior to use.
4.1 A test specimen is clamped without tension between
1.4 This international standard was developed in accor-
circular plates and secured in a tensile or compression testing
dance with internationally recognized principles on standard-
machine, or both. A force is exerted against the center of the
ization established in the Decision on Principles for the
unsupported portion of the test specimen by a cylindrical steel
Development of International Standards, Guides and Recom-
probe attached to the load indicator until rupture occurs. The
mendations issued by the World Trade Organization Technical
maximum force is the value of puncture strength.
Barriers to Trade (TBT) Committee.
5. Significance and Use
2. Referenced Documents
5.1 Puncture using a 50 mm probe is applicable to deter-
2
2.1 ASTM Standards:
mine the index strength resistance and deformation of a
D76/D76M Specification for Tensile Testing Machines for
particular geotextile or geotextile-related products.
Textiles
D123 Terminology Relating to Textiles 5.2 This test method is considered satisfactory for accep-
tance testing of commercial shipments of geotextiles.
D1776/D1776M Practice for Conditioning and Testing Tex-
tiles
5.3 In case of a dispute arising from differences in reported
D1883 Test Method for California Bearing Ratio (CBR) of
test results when using this test method for acceptance testing
Laboratory-Compacted Soils
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
1
This test method is under the jurisdiction of ASTM Committee D35 on
assistance is recommended for the investigation of bias. As a
Geosynthetics and is the direct responsibility of Subcommittee D35.01 on Mechani-
minimum, the two parties should take a group of test speci-
cal Properties.
mens that are as homogeneous as possible and that are from a
Current edition approved Dec. 1, 2022. Published December 2022. Originally
lot of the type in question. The test specimens then should be
approved in 1998. Last previous edition approved in 2022 as D6241 – 22. DOI:
10.1520/D6241-22A.
randomly assigned in equal numbers to each laboratory for
2
For referenced ASTM standards, visit the ASTM website, www.astm.org, or
testing.Theaverageresultsfromthetwolaboratoriesshouldbe
contact ASTM Customer Service at [e-mail]. 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
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
1

---------------------- Page: 1 ---------------
...

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 − 22 D6241 − 22a
Standard Test Method for
Measuring Static Puncture Index Strength of Geotextiles
and Geotextile-RelatedGeosynthetic-Related Products Using
1
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
1.1 This test method is an index test used to measure the force required to puncture a geotextile and geotextile-related products
with a 50 mm diameter probe rod.cylindrical probe. The dimensions of the probe provide a multidirectional force on the geotextile.
NOTE 1—This test is also commonly known as CBR Puncture Test.
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, health, and environmental practices and determine the applicability of
regulatory limitations prior to use.
1.4 This international standard was developed in accordance with internationally recognized principles on standardization
established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued
by the World Trade Organization Technical Barriers to Trade (TBT) Committee.
2. Referenced Documents
2
2.1 ASTM Standards:
D76/D76M Specification for Tensile Testing Machines for Textiles
D123 Terminology Relating to Textiles
D1776/D1776M Practice for Conditioning and Testing Textiles
D1883 Test Method for California Bearing Ratio (CBR) of Laboratory-Compacted Soils
D4354 Practice for Sampling of Geosynthetics and Rolled Erosion Control Products (RECPs) for Testing
D4439 Terminology for Geosynthetics
E691 Practice for Conducting an Interlaboratory Study to Determine the Precision of a Test Method
NOTE 2—Test Method D1883 describes a mold (CBR mold) that can be used for this test method.
1
This test method is under the jurisdiction of ASTM Committee D35 on Geosynthetics and is the direct responsibility of Subcommittee D35.01 on Mechanical Properties.
Current edition approved July 1, 2022Dec. 1, 2022. Published July 2022December 2022. Originally approved in 1998. Last previous edition approved in 20142022 as
D6241 – 14.D6241 – 22. DOI: 10.1520/D6241-22.10.1520/D6241-22A.
2
For referenced ASTM standards, visit the ASTM website, www.astm.org, or contact ASTM Customer Service at [e-mail]. For Annual Book of ASTM Standards
volume information, refer to the standard’s Document Summary page on the ASTM website.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
1

---------------------- Page: 1 ----------------------
D6241 − 22a
3. Terminology
3.1 Definitions—For definitions of other textile terms used in this test method, refer to Terminology D123. For definitions of other
terms relating to geosynthetics used in this test method, refer to Terminology D4439.
4. Summary of Test Method
4.1 A test specimen is clamped without tension between circular plates and secured in a tensile or compression testing machine,
or both. A force is exerted against the center of the unsupported portion of the test specimen by a circularcylindrical steel probe
attached to the load indicator until rupture occurs. The maximum force is the value of puncture strength.
5. Significance and Use
5.1 Puncture using a 50 mm flat circular probe is applicable to determine the index strength resistance and deformation of a
particular geotextile or geotextile-related products.
5.2 This test method is considered satisfactory for acceptance testing of commercial shipments of geotextiles.
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 s
...