ASTM D6575/D6575M-22

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 (TRMs).  
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 nonconformance 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, 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: 30-Jun-2022
• ICS: 65.020.20 - Plant growing
• Technical Committee: D35 - Geosynthetics
• Drafting Committee: D35.05 - Geosynthetic Erosion Control

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: D6575/D6575M − 22
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.
1. Scope D6566Test Method for Measuring Mass Per Unit Area of
Turf Reinforcement Mats
1.1 This test method covers the determination of the stiff-
E177Practice for Use of the Terms Precision and Bias in
ness of geosynthetics used as turf reinforcement mats (TRMs).
ASTM Test Methods
1.2 The method is applicable to TRMs of any fiber content
E691Practice for Conducting an Interlaboratory Study to
and any number of components.
Determine the Precision of a Test Method
1.3 The values stated in either SI units or inch-pound units 3
2.2 Federal Standards:
are to be regarded separately as standard. The values stated in
CCC-T-191bTextile Test Methods No. 5206.2
each system may not be exact equivalents; therefore, each
system shall be used independently of the other. Combining
3. Terminology
values from the two systems may result in nonconformance
3.1 Definitions of Terms Specific to This Standard:
with the standard.
3.1.1 bending length (general), n—a measure of the inter-
1.4 This standard does not purport to address all of the
action between geosynthetic weight and geosynthetic stiffness
safety concerns, if any, associated with its use. It is the
as shown by the way in which a geosynthetic bends under its
responsibility of the user of this standard to establish appro-
ownweight.Itreflectsthestiffnessofageosyntheticwhenbent
priate safety, health, and environmental practices and deter-
in one plane under the force of gravity, and is one component
mine the applicability of regulatory limitations prior to use.
of drape.
1.5 This international standard was developed in accor-
3.1.1.1 Discussion—Bending length is called “drape stiff-
dance with internationally recognized principles on standard-
ness” in Federal Specification CCC-T-191b.
ization established in the Decision on Principles for the
3.1.2 bending length (specific), n—the cube root of the ratio
Development of International Standards, Guides and Recom-
of the flexural rigidity to the mass per unit area.
mendations issued by the World Trade Organization Technical
Barriers to Trade (TBT) Committee.
3.1.3 flexural rigidity (general), n—resistance to bending.
3.1.3.1 Discussion—Resistance to bending or flexural rigid-
2. Referenced Documents
ity is called “flex stiffness” in Federal Specification CCC-T-
2
2.1 ASTM Standards:
191b.
D123Terminology Relating to Textiles
3.1.4 flexural rigidity (specific), n—the couple on either end
D1388Test Method for Stiffness of Fabrics
ofasampleofunitwidthbentintounitcurvatureintheabsence
D1776/D1776MPractice for Conditioning and Testing Tex-
of any tension.
tiles
3.1.4.1 Discussion—The methods measure the bending
D4354Practice for Sampling of Geosynthetics and Rolled
length. Flexural rigidity is calculated directly by multiplying
Erosion Control Products (RECPs) for Testing
the cube of the bending length by the weight per unit area (see
D4439Terminology for Geosynthetics
3.1.2).
3.1.5 stiffness, n—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 Geosyn-
3.2 Definitions—For definitions of other textile or geosyn-
thetic Erosion Control.
thetic terms used in this test method, refer to Terminologies
CurrenteditionapprovedJuly1,2022.PublishedJuly2022.Originallyapproved
D123 and D4439.
in 2000. Last previous edition approved in 2016 as D6575/D6575M–16. DOI:
10.1520/D6575_D6575M-22.
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 − 22
4. Significance and Use the machine direction tests and cut the cross-machine direction
specimens so that separate cross-machine direction yarns/
4.1 In general this test method is adapted from tests
...

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/D6575M − 16 D6575/D6575M − 22
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.
1. Scope
1.1 This test method covers the determination of the stiffness of geosynthetics used as Turf Reinforcement Mats (TRM).turf
reinforcement mats (TRMs).
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 aremay not necessarilybe exact equivalents; therefore, to ensure conformance with the standard, each system shall be used
independently of the other, andother. Combining values from the two systems shall not be combined.may result in nonconformance
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 safety, health, and healthenvironmental 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:
D123 Terminology Relating to Textiles
D1388 Test Method for Stiffness of Fabrics
D1776/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
D6566 Test Method for Measuring Mass Per Unit Area of Turf 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
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 July 1, 2016July 1, 2022. Published July 2016July 2022. Originally approved in 2000. Last previous edition approved in 20142016 as
D6575D6575/D6575M – 16. –14a. DOI: 10.1520/D6575_D6575M-16.10.1520/D6575_D6575M-22.
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 Publishing Office, 732 N. Capitol St., NW, 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

---------------------- Page: 1 ----------------------
D6575/D6575M − 22
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.
3.1.1 bending length (general), n—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.
3.1.1.1 Discussion—
Bending length is called “drape stiffness” in Federal Specification CCC-T-191b.
3.1.2 flexural rigidity, n:
3.1.2.1 general, adj—resistance to bending.
3.1.2.2 Discussion—Resistance to bending or “flexural rig
...