ASTM D6575/D6575M-16

Standard Test Method for Determining Stiffness of Geosynthetics Used as Turf Reinforcement Mats (TRMs)

SIGNIFICANCE AND USE
4.1 In general this test method is adapted from tests developed for woven fabrics (previously designated as Test Method D1388).  
4.2 The cantilever test method may not be suitable for testing products that are very limp or have a marked tendency to curl or twist at a cut edge.
SCOPE
1.1 This test method covers the determination of the stiffness of geosynthetics used as Turf Reinforcement Mats (TRM).  
1.2 The method is applicable to TRMs of any fiber content and any number of components.  
1.3 The values stated in either SI units or inch-pound units are to be regarded separately as standard. The values stated in each system may not be exact equivalents; therefore, each system shall be used independently of the other. Combining values from the two systems may result in non-conformance with the standard.  
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.

General Information

• Status: Historical
• Publication Date: 30-Jun-2016
• ICS: 65.020.20 - Plant growing
• Technical Committee: D35 - Geosynthetics
• Drafting Committee: D35.05 - Geosynthetic Erosion Control

Standards Content (Sample)

NOTICE: This standard has either been superseded and replaced by a new version or withdrawn.
Contact ASTM International (www.astm.org) for the latest information
Designation: D6575/D6575M − 16
Standard Test Method for
Determining Stiffness of Geosynthetics Used as Turf
1
Reinforcement Mats (TRMs)
This standard is issued under the fixed designation D6575/D6575M; 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.
3
1. Scope 2.2 Federal Standards:
CCC-T-191bTextile Test Methods No. 5206.2
1.1 This test method covers the determination of the stiff-
nessofgeosyntheticsusedasTurfReinforcementMats(TRM).
3. Terminology
1.2 The method is applicable to TRMs of any fiber content
3.1 Definitions of Terms Specific to This Standard:
and any number of components.
3.1.1 bending length, n:
1.3 The values stated in either SI units or inch-pound units
3.1.1.1 general, adj—a measure of the interaction between
are to be regarded separately as standard. The values stated in
geosyntheticweightandgeosyntheticstiffnessasshownbythe
each system may not be exact equivalents; therefore, each
way in which a geosynthetic bends under its own weight. It
system shall be used independently of the other. Combining
reflects the stiffness of a geosynthetic when bent in one plane
values from the two systems may result in non-conformance
under the force of gravity, and is one component of drape.
with the standard.
3.1.1.2 Discussion—Bending length is called drape stiffness
in Federal Specification CCC-T-191b.
1.4 This standard does not purport to address all of the
3.1.1.3 specific, adj—the cube root of the ratio of the
safety concerns, if any, associated with its use. It is the
flexural rigidity to the mass per unit area.
responsibility of the user of this standard to establish appro-
3.1.2 flexural rigidity, n:
priate safety and health practices and determine the applica-
3.1.2.1 general, adj—resistance to bending.
bility of regulatory limitations prior to use.
3.1.2.2 Discussion—Resistance to bending or “flexural ri-
2. Referenced Documents
gidity” is called flex stiffness in Federal Specification CCC-T-
2
191b.
2.1 ASTM Standards:
3.1.2.3 specific, adj—thecoupleoneitherendofasampleof
D123Terminology Relating to Textiles
unit width bent into unit curvature in the absence of any
D1388Test Method for Stiffness of Fabrics
tension.
D1776/D1776MPractice for Conditioning and Testing Tex-
3.1.2.4 Discussion—The methods measure the bending
tiles
length. Flexural rigidity is calculated directly by multiplying
D4354Practice for Sampling of Geosynthetics and Rolled
the cube of the bending length by the weight per unit area (see
Erosion Control Products(RECPs) for Testing
3.1.1.3).
D4439Terminology for Geosynthetics
3.1.3 stiffness, n—resistance to bending.
D6566Test Method for Measuring Mass per Unit Area of
3.2 Definitions—For definitions of other textile or geosyn-
Turf Reinforcement Mats
thetic terms used in this test method, refer to Terminologies
E177Practice for Use of the Terms Precision and Bias in
D123 and D4439.
ASTM Test Methods
E691Practice for Conducting an Interlaboratory Study to
4. Significance and Use
Determine the Precision of a Test Method
4.1 In general this test method is adapted from tests devel-
oped for woven fabrics (previously designated as Test Method
1
This test method is under the jurisdiction of ASTM Committee D35 on
D1388).
Geosynthetics and is the direct responsibility of Subcommittee D35.05 on Geosyn-
thetic Erosion Control.
4.2 The cantilever test method may not be suitable for
CurrenteditionapprovedJuly1,2016.PublishedJuly2016.Originallyapproved
testing products that are very limp or have a marked tendency
in 2000. Last previous edition approved in 2014 as D6575–14a. DOI: 10.1520/
to curl or twist at a cut edge.
D6575_D6575M-16.
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
3
Standards volume information, refer to the standard’s Document Summary page on Available from U.S. Government Publishing Office, 732 N. Capitol St., NW,
the ASTM website. Washington, DC 20401-0001, http://www.gpo.gov.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
1

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D6575/D6575M − 16
the specimen should be included in the report.
Cantilever Method
9. Procedure
5. Summary of Method
9.1 Make tests on conditioned specimens in the standard
5.1 Aspecimen of the TRM is slid in a direction parallel to
atmosphere for testing.
its long dimension, so that its end projects from the edge of a
horizontal surface. The length of overhang is measured when
9.2 Set the tester on a table or bench so that the
...

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: D6575 − 14a D6575/D6575M − 16
Standard Test Method for
Determining Stiffness of Geosynthetics Used as Turf
1
Reinforcement Mats (TRMs)
This standard is issued under the fixed designation D6575;D6575/D6575M; 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 the determination of the stiffness of geosynthetics used as Turf Reinforcement Mats (TRM).
1.2 The method is applicable to TRMs of any fiber content and any number of components.
1.3 The values stated in either SI units or inch-pound units are to be regarded separately as standard. The values given in
parentheses are mathematical conversions to SI units that are provided for information only and are not considered stated in each
system may not be exact equivalents; therefore, each system shall be used independently of the other. Combining values from the
two systems may result in non-conformance with the standard.
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:
D123 Terminology Relating to Textiles
D1388 Test Method for Stiffness of Fabrics
D1776D1776/D1776M Practice for Conditioning and Testing Textiles
D4354 Practice for Sampling of Geosynthetics and Rolled Erosion Control Products(RECPs) for Testing
D4439 Terminology for Geosynthetics
D5261D6566 Test Method for Measuring Mass per Unit Area of GeotextilesTurf Reinforcement Mats
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
2.2 Federal Standards:
CCC-T-191b Textile Test Methods No. 5206.2
3. Terminology
3.1 Definitions of Terms Specific to This Standard:
3.1.1 bending length, n:
3.1.1.1 general, adj—a measure of the interaction between geosynthetic weight and geosynthetic stiffness as shown by the way
in which a geosynthetic bends under its own weight. It reflects the stiffness of a geosynthetic when bent in one plane under the
force of gravity, and is one component of drape.
3.1.1.2 Discussion—Bending length is called drape stiffness in Federal Specification CCC-T-191b.
3.1.1.3 specific, adj—the cube root of the ratio of the flexural rigidity to the mass per unit area.
3.1.2 flexural rigidity, n:
3.1.2.1 general, adj—resistance to bending.
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 Aug. 1, 2014July 1, 2016. Published September 2014July 2016. Originally approved in 2000. Last previous edition approved in 2014 as
D6575 –14. –14a. DOI: 10.1520/D6575-14A.10.1520/D6575_D6575M-16.
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.
3
Available from U.S. Government Printing Office Superintendent of Documents, Publishing Office, 732 N. Capitol St., NW, Washington, DC 20401,20401-0001,
http://www.gpo.gov.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
1

---------------------- Page: 1 ----------------------
D6575/D6575M − 16
3.1.2.2 Discussion—Resistance to bending or “flexural rigidity” is called flex stiffness in Federal Specification CCC-T-191b.
3.1.2.3 specific, adj—the couple on either end of a sample of unit width bent into unit curvature in the absence of any tension.
3.1.2.4 Discussion—The methods measure the bending length. Flexural rigidity is calculated directly by multiplying the cube
of the bending length by the weight per unit area (see 3.1.1.3).
3.1.3 stiffness, n—resistance to bending.
3.2 Definitions—For definitions of other textile or geosynthetic terms used in this test method, refer to Terminologies D123 and
D4439.
4. Significance and Use
4.1 In general this test method is adapted from tests developed for woven fabrics (previously designated as Test Method D13
...