ASTM D8058-23

Standard Test Method for Determining the Flexural Strength of a Geosynthetic Cementitious Composite Mat (GCCM) Using the Three-Point Bending Test

SIGNIFICANCE AND USE
5.1 This test method is applicable for testing geosynthetic cementitious composite mats in a cured state. It is used with a constant-rate-of-extension type tension apparatus.  
5.2 This test is an index test that may be used for manufacturing quality control (MQC). This test is appropriate for characterizing the flexural properties of a GCCM.
SCOPE
1.1 This test method provides guidelines for testing the flexural strength of cured geosynthetic cementitious composite mat (GCCM) products in a three (3)-point bend apparatus.  
1.2 The values in SI units are to be regarded as the standard. Values in inch-pound units are in parentheses for information.  
1.3 This standard may involve hazardous operations, equipment, and climates. 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: 31-Jan-2023
• ICS: 59.080.70 - Geotextiles
• 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: D8058 − 23
Standard Test Method for
Determining the Flexural Strength of a Geosynthetic
Cementitious Composite Mat (GCCM) Using the Three-Point
1
Bending Test
This standard is issued under the fixed designation D8058; 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. Terminology
1.1 This test method provides guidelines for testing the
3.1 For definitions of common technical terms used in this
flexural strength of cured geosynthetic cementitious composite standard, refer to Terminology D4439.
mat (GCCM) products in a three (3)-point bend apparatus.
3.2 Definitions:
1.2 The values in SI units are to be regarded as the standard. 3.2.1 cured, adj—a description of the state of a GCCM after
Values in inch-pound units are in parentheses for information.
hydration for a specified period of time and quantity of water
when known under specified conditions, followed by a period
1.3 This standard may involve hazardous operations,
of time where the GCCM is kept under a specified environ-
equipment, and climates. This standard does not purport to
mental condition during which the cementitious material con-
address all of the safety concerns, if any, associated with its
tinues to cure and develop compressive strength.
use. It is the responsibility of the user of this standard to
establish appropriate safety, health, and environmental prac-
3.2.2 curing time, n—the time subsequent to initial hydra-
tices and determine the applicability of regulatory limitations
tion of the GCCM and immediately prior to the testing of the
prior to use.
material, during which the cementitious material is allowed to
1.4 This international standard was developed in accor-
harden and form its final strength using the specific process for
dance with internationally recognized principles on standard- curing as specified in 8.3.
ization established in the Decision on Principles for the
3.2.3 final breaking load, n—the maximum load achieved
Development of International Standards, Guides and Recom-
prior to rupture of materials, measured between 0 and 30 mm
mendations issued by the World Trade Organization Technical
(1.2 in.) of displacement from the start of the test.
Barriers to Trade (TBT) Committee.
3.2.4 final deflection—the deflection of the specimen from
its initial position (before testing begins) measured at mid span
2. Referenced Documents
at the final breaking load.
2
2.1 ASTM Standards:
3.2.5 final flexural strength, n—the final flexural strength,
D76/D76M Specification for Tensile Testing Machines for
expressed in megapascals (pound-force per square inch), is
Textiles
calculated from the final breaking load of a hydrated and cured
D4354 Practice for Sampling of Geosynthetics and Rolled
GCCM specimen, oriented in either the machine or cross-
Erosion Control Products (RECPs) for Testing
machine direction, loaded as simple beams, when breaks occur
D4439 Terminology for Geosynthetics
perpendicular to the specimen length, with the load applied at
D5994/D5994M Test Method for Measuring Core Thickness
the center, in a three-point loading fixture.
of Textured Geomembranes
D8030/D8030M Practice for Sample Preparation for GCCM 3.2.6 geosynthetic cementitious composite barrier (GCCB),
n—a composite material consisting of a geosynthetic barrier
bonded to an integral GCCM protective cover layer. The
geosynthetic barrier component of adjacent material must be
1
This test method is under the jurisdiction of ASTM Committee D35 on
seamed to reduce or prevent the flow of fluid through the
Geosynthetics and is the direct responsibility of Subcommittee D35.05 on Geosyn-
thetic Erosion Control.
construction.
Current edition approved Feb. 1, 2023. Published March 2023. Originally
3.2.6.1 Discussion—The terms geosynthetic barrier,
approved in 2017. Last previous edition approved in 2019 as D8058 – 19. DOI:
GCCM, and seam are defined in Terminology D4439.
10.1520/D8058-23.
2
For referenced ASTM standards, visit the ASTM website, www.astm.org, or
3.2.7 hydration, n—exposure of the GCCM, in this case, to
contact ASTM Customer Service at [e-mail]. For Annual Book of ASTM
water in prescribed conditions for a prescribed time and water
Standards volume information, refer to the standard’s Document Summary page on
the ASTM website. quantity when known.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
1

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...

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: D8058 − 19 D8058 − 23
Standard Test Method for
Determining the Flexural Strength of a Geosynthetic
Cementitious Composite Mat (GCCM) Using the Three-Point
1
Bending Test
This standard is issued under the fixed designation D8058; 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 provides guidelines for testing the flexural strength of cured geosynthetic cementitious composite mat
(GCCM) products in a three (3)-point bend apparatus.
1.2 The values in SI units are to be regarded as the standard. Values in inch-pound units are in parentheses for information.
1.3 This standard may involve hazardous operations, equipment, and climates. 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
D4354 Practice for Sampling of Geosynthetics and Rolled Erosion Control Products (RECPs) for Testing
D4439 Terminology for Geosynthetics
D5994/D5994M Test Method for Measuring Core Thickness of Textured Geomembranes
D8030/D8030M Practice for Sample Preparation for GCCM
3. Terminology
3.1 For definitions of common technical terms used in this standard, refer to Terminology D4439.
3.2 Definitions:
3.2.1 cured, adj—a description of the state of a GCCM after hydration for a specified period of time and quantity of water when
known under specified conditions, followed by a period of time where the GCCM is kept under a specified environmental condition
during which the cementitious material continues to cure and develop compressive strength.
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 Jan. 1, 2019Feb. 1, 2023. Published January 2019March 2023. Originally approved in 2017. Last previous edition approved in 20172019 as
D8058 – 17.D8058 – 19. DOI: 10.1520/D8058-19.10.1520/D8058-23.
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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D8058 − 23
3.2.2 curing time, n—the time subsequent to initial hydration of the GCCM and immediately prior to the testing of the material,
during which the cementitious material is allowed to harden and form its final strength using the specific process for curing as
specified in 8.3.
3.2.3 dry, adj—a description of the state of a GCCM before it has been exposed to a hydration source and typically describes the
“as-received” dry product after conditioning in a prescribed manner.
3.2.3 final breaking load, n—the maximum load achieved prior to rupture of materials.materials, measured between 0 and 30 mm
(1.2 in.) of displacement from the start of the test.
3.2.4 final deflection—the deflection of the specimen from its initial position (before testing begins) measured at mid span at the
final breaking load.
3.2.5 final flexural strength, n—the final flexural strength, expressed in megapascals (pound-force per square inch), is calculated
from the final breaking load of a hydrated and cured GCCM specimen, oriented in either the machine or cross-machine direction,
loaded as simple beams, when breaks occur perpendicular to the specimen length, with the load applied at the center, in a
three-point loading fixture.
3.2.6 geosynthetic cementitious composite barrier (GCCB), n—a composite material consisting of a geosynthetic barrier bonded
...