ASTM D6818-21

Standard Test Method for Tensile Properties of Rolled Erosion Control Products

SIGNIFICANCE AND USE
5.1 The strip test in this test method is considered satisfactory for acceptance testing (that is, conformance to a specification) of commercial shipments of rolled erosion control products, since the method has been used extensively in the trade for acceptance testing.  
5.1.1 In case of disagreement arising from differences in reported test values 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. At a minimum, the two parties should take a group of test specimens which are as homogeneous as possible and are from a lot of material of the type in question. 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 Student's t-test for unpaired data and an acceptable probability level chosen by the two parties before testing is begun. If bias is found, either its cause must be found and corrected, or the purchaser and the supplier must agree to interpret future results in the light of the known bias.
SCOPE
1.1 This test method covers strip test procedures for determining the tensile properties of rolled erosion control products (RECPs).  
1.2 The values stated in SI units are to be regarded as the standard. The values given in parentheses are provided for information purposes only.  
1.3 This standard does not apply to RECPs made of composite materials where the component providing the reinforcement cannot be tested for tensile strength with the procedure herein described. In this case, the established ASTM testing method which is most appropriate for that material shall be used instead.  
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, health, and environmental practices and determine the applicability of regulatory limitations prior to use.  
1.5 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: 14-Feb-2021
• ICS: 83.120 - Reinforced plastics
• Technical Committee: D35 - Geosynthetics
• Drafting Committee: D35.05 - Geosynthetic Erosion Control

Relations

• 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: D6818 − 21
Standard Test Method for
1
Tensile Properties of Rolled Erosion Control Products
This standard is issued under the fixed designation D6818; 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 E177 Practice for Use of the Terms Precision and Bias in
ASTM Test Methods
1.1 This test method covers strip test procedures for deter-
E691 Practice for Conducting an Interlaboratory Study to
mining the tensile properties of rolled erosion control products
Determine the Precision of a Test Method
(RECPs).
3. Terminology
1.2 The values stated in SI units are to be regarded as the
standard. The values given in parentheses are provided for
3.1 Definitions:
information purposes only.
3.1.1 constant rate of extension (CRE) tensile testing
1.3 This standard does not apply to RECPs made of com- machine—a testing machine in which the rate of increase of
specimen length is uniform with time.
posite materials where the component providing the reinforce-
ment cannot be tested for tensile strength with the procedure
3.1.2 elongation, n—the ratio of the extension of a material
herein described. In this case, the established ASTM testing
to the length of the material prior to stretching. (Compare
method which is most appropriate for that material shall be
extension.)
used instead.
3.1.3 extension, n—the change in length of a material due to
1.4 This standard does not purport to address all of the
stretching. (Compare elongation.)
safety concerns, if any, associated with its use. It is the
3.1.4 rupture, v—the act of bursting.
responsibility of the user of this standard to establish appro-
3.1.5 strip test, n—in RECP testing, a tensile test in which
priate safety, health, and environmental practices and deter-
the full width of the specimen is gripped in the clamps.
mine the applicability of regulatory limitations prior to use.
1.5 This international standard was developed in accor- 3.2 For definitions of other terms used in this test method,
dance with internationally recognized principles on standard-
refer to Terminology D123 or Terminology D4439.
ization established in the Decision on Principles for the
4. Summary of Test Method
Development of International Standards, Guides and Recom-
mendations issued by the World Trade Organization Technical
4.1 A test specimen is clamped in a tensile testing machine
Barriers to Trade (TBT) Committee.
and a force applied to the specimen until it breaks. Values for
the breaking force and elongation of the test specimen are
2. Referenced Documents
obtained from machine scales, dials, autographic recording
2
charts, or a computer interfaced with the testing machine.Also,
2.1 ASTM Standards:
points along the stress-strain curve can be reported.
D76/D76M Specification for Tensile Testing Machines for
Textiles
5. Significance and Use
D123 Terminology Relating to Textiles
5.1 The strip test in this test method is considered satisfac-
D4354 Practice for Sampling of Geosynthetics and Rolled
tory for acceptance testing (that is, conformance to a specifi-
Erosion Control Products (RECPs) for Testing
cation) of commercial shipments of rolled erosion control
D4439 Terminology for Geosynthetics
products, since the method has been used extensively in the
trade for acceptance testing.
1
This test method is under the jurisdiction of ASTM Committee D35 on
5.1.1 In case of disagreement arising from differences in
Geosynthetics and is the direct responsibility of Subcommittee D35.05 on Geosyn-
reported test values when using this test method for acceptance
thetic Erosion Control.
testing of commercial shipments, the purchaser and the sup-
Current edition approved Feb. 15, 2021. Published February 2021. Originally
plier should conduct comparative tests to determine if there is
approved in 2002. Last previous edition approved in 2018 as D6818 – 18a. DOI:
10.1520/D6818-21.
statistical bias between their laboratories. Competent statistical
2
For referenced ASTM standards, visit the ASTM website, www.astm.org, or
assistance is recommended for the investigation of bias. At a
contact ASTM Customer Service at [e-mail]. For Annual Book of ASTM
minimum, the two parties should take a group of test speci-
Standards volume information, refer to the standard’s Document Summary page on
the ASTM website. mens which are as homogeneous as possible and are from a lot
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, We
...

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: D6818 − 18a D6818 − 21
Standard Test Method for
Ultimate Tensile Properties of Rolled Erosion Control
1
Products
This standard is issued under the fixed designation D6818; 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 covers strip test procedures for determining the tensile properties of rolled erosion control products (RECPs).
1.2 The values stated in SI units are to be regarded as the standard. The values given in parentheses are provided for information
purposes only.
1.3 This standard does not apply to RECPs made of composite materials where the component providing the reinforcement cannot
be tested for tensile strength with the procedure herein described. In this case, the established ASTM testing method which is most
appropriate for that material shall be used instead.
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, health, and environmental practices and determine the applicability of
regulatory limitations prior to use.
1.5 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
D4354 Practice for Sampling of Geosynthetics and Rolled Erosion Control Products (RECPs) for Testing
D4439 Terminology for Geosynthetics
E177 Practice for Use of the Terms Precision and Bias in ASTM Test Methods
E691 Practice for Conducting an Interlaboratory Study to Determine the Precision of a Test Method
3. Terminology
3.1 Definitions:
3.1.1 breaking load, n—the maximum force applied to a specimen in a tensile test carried to rupture.
1
This test method is under the jurisdiction of ASTM Committee D35 on Geosynthetics and is the direct responsibility of Subcommittee D35.05 on Geosynthetic Erosion
Control.
Current edition approved June 1, 2018Feb. 15, 2021. Published June 2018February 2021. Originally approved in 2002. Last previous edition approved in 2018 as D6818
– 18.18a. DOI: 10.1520/D6818-18A.10.1520/D6818-21.
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

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D6818 − 21
3.1.1.1 Discussion—
Materials that are brittle usually rupture at the maximum force. Materials that are ductile usually experience a maximum force
before rupturing.
3.1.1 constant rate of extension (CRE) tensile testing machine—a testing machine in which the rate of increase of specimen length
is uniform with time.
3.1.2 elongation, n—the ratio of the extension of a material to the length of the material prior to stretching. (Compare extension.)
3.1.3 extension, n—the change in length of a material due to stretching. (Compare elongation.)
3.1.4 rupture, v—the act of bursting.
3.1.5 strip test, n—in RECP testing, a tensile test in which the full width of the specimen is gripped in the clamps.
3.1.7 tensile test, n—in geosynthetics, a test in which a geosynthetic material is stretched in one direction to determine the
force-elongation characteristics, the breaking force, or the breaking elongation.
3.2 For definitions of other terms used in this test method, refer to Terminology D123 or Terminology D4439.
4. Summary of Test Method
4.1 A test specimen is clamped in a tensile testing machine and a force applied to the specimen until it breaks. Values for the
breaking force and elongation of the test specimen are obtained from machine scales, dials, autographic recording charts, or a
computer interfaced with the testing machine. Also, points along the stress-strain curve can be reported.
5. Significance and Use
5.1 The st
...