ASTM D6818-14
(Test Method)Standard Test Method for Ultimate Tensile Properties of Rolled Erosion Control Products
Standard Test Method for Ultimate 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 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. As a minimum, the two parties should take a group of test specimen which are as homogeneous as possible and are from a lot of material of the type in question. The test specimen 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 (RECP).
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 RECP's 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 and health practices and determine the applicability of regulatory limitations prior to use.
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Designation: D6818 − 14
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 3.1.1.1 Discussion—Materials that are brittle usually rup-
ture at the maximum force. Materials that are ductile usually
1.1 This test method covers strip test procedures for deter-
experience a maximum force before rupturing.
mining the tensile properties of Rolled Erosion Control Prod-
3.1.2 constant rate of extension (CRE) tensile testing
ucts (RECP).
machine—a testing machine in which the rate of increase of
1.2 The values stated in SI units are to be regarded as the
specimen length is uniform with time.
standard. The values given in parentheses are provided for
3.1.3 elongation, n—the ratio of the extension of a material
information purposes only.
to the length of the material prior to stretching. (Compare
1.3 This standard does not apply to RECP’s made of
extension.)
composite materials where the component providing the rein-
3.1.4 extension, n—the change in length of a material due to
forcement cannot be tested for tensile strength with the
stretching. (Compare elongation.)
procedure herein described. In this case, the establishedASTM
testing method, which is most appropriate for that material, 3.1.5 rupture, v—the act of bursting.
shall be used instead.
3.1.6 strip test, n—in RECP testing, a tensile test in which
1.4 This standard does not purport to address all of the the full width of the specimen is gripped in the clamps.
safety concerns, if any, associated with its use. It is the
3.1.7 tensile test, n—in geosynthetics, a test in which a
responsibility of the user of this standard to establish appro-
geosynthetic material is stretched in one direction to determine
priate safety and health practices and determine the applica-
the force - elongation characteristics, the breaking force, or the
bility of regulatory limitations prior to use.
breaking elongation.
2. Referenced Documents
4. Summary of Test Method
2
2.1 ASTM Standards:
4.1 A test specimen is clamped in a tensile testing machine
D76/D76M Specification for Tensile Testing Machines for
and a force applied to the specimen until it breaks. Values for
Textiles
the breaking force and elongation of the test specimen are
E177 Practice for Use of the Terms Precision and Bias in
obtained from machine scales, dials, autographic recording
ASTM Test Methods
charts, or a computer interfaced with the testing machine.Also,
E691 Practice for Conducting an Interlaboratory Study to
points along the stress/strain curve can be reported.
Determine the Precision of a Test Method
5. Significance and Use
3. Terminology
5.1 The strip test in this test method is considered satisfac-
3.1 Definitions:
tory for acceptance testing of commercial shipments of Rolled
3.1.1 breaking load, n—the maximum force applied to a
Erosion Control Products since the method has been used
specimen in a tensile test carried to rupture.
extensively in the trade for acceptance testing.
5.1.1 In case of disagreement arising from differences in
1
This test method is under the jurisdiction of ASTM Committee D35 on
reported test values when using this test method for acceptance
Geosynthetics and is the direct responsibility of Subcommittee D35.05 on Geosyn-
testing of commercial shipments, the purchaser and the sup-
thetic Erosion Control.
plier should conduct comparative tests to determine if there is
Current edition approved May 1, 2014. Published May 2014. Originally
statistical bias between their laboratories. Competent statistical
approved in 2002. Last previous edition approved in 2009 as D6818 – 02 (2009).
DOI: 10.1520/D6818-14.
assistance is recommended for the investigation of bias. As a
2
For referenced ASTM standards, visit the ASTM website, www.astm.org, or
minimum, the two parties should take a group of test specimen
contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM
which are as homogeneous as possible and are from a lot of
Standards volume information, refer to the standard’s Document Summary page on
the ASTM website. material of the type in question. The test specimen should then
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
1
---------------------- Page: 1 ----------------------
D6818 − 14
be randomly assigned in equal numbers to each laboratory for are too tight will produce breaks at the clamp line; clamps
testing.Theaverageresultsfromthetwolabor
...
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 − 02 (Reapproved 2009) D6818 − 14
Standard Test Method for
Ultimate Tensile Properties of Turf Reinforcement
1
MatsRolled 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
1.1 This test method covers strip test procedures for determining the tensile properties of Turf Reinforcement Mats
(TRM).Rolled Erosion Control Products (RECP).
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 TRM’sRECP’s 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 and health practices and determine the applicability of regulatory
limitations prior to use.
2. Referenced Documents
2
2.1 ASTM Standards:
D76D76/D76M Specification for Tensile Testing Machines for Textiles
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, 2009May 1, 2014. Published July 2009May 2014. Originally approved in 2002. Last previous edition approved in 20022009 as D6818
– 02. 02 (2009). DOI: 10.1520/D6818-02R09.10.1520/D6818-14.
2
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.
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.
3.1.2 constant rate of extension (CRE) tensile testing machine—a testing machine in which the rate of increase of specimen
length is uniform with time.
3.1.3 elongation, n—the ratio of the extension of a material to the length of the material prior to stretching. (Compare extension.)
3.1.4 extension, n—the change in length of a material due to stretching. (Compare elongation.)
3.1.5 rupture, v—the act of bursting.
3.1.6 strip test, n—in TRMRECP 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.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
1
---------------------- Page: 1 ----------------------
D6818 − 14
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 strip test in this test method is considered satisfactory for acceptance testing of commercial shipments of Turf
Reinforcement Mats 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.
...
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