ASTM D8058-17e1
(Test Method)Standard Test Method for Determining the Flexural Strength of a Geosynthetic Cementitious Composite Mat (GCCM) Using the Three-Point Bending Test
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 and health 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.
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´1
Designation: D8058 − 17
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
ε NOTE—Subsection 3.2.7 was corrected editorially in August 2017.
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 and health practices and deter-
3.2.2 curing time, n—the time subsequent to initial hydra-
mine the applicability of regulatory limitations prior to use.
tion of the GCCM and immediately prior to the testing of the
1.4 This international standard was developed in accor-
material, during which the cementitious material is allowed to
dance with internationally recognized principles on standard-
harden and form its final strength using the specific process for
ization established in the Decision on Principles for the
curing as specified in 8.3.
Development of International Standards, Guides and Recom-
3.2.3 dry, adj—a description of the state of a GCCM before
mendations issued by the World Trade Organization Technical
it has been exposed to a hydration source and typically
Barriers to Trade (TBT) Committee.
describes the “as-received” dry product after conditioning in a
prescribed manner.
2. Referenced Documents
2 3.2.4 final breaking load, n—the maximum load achieved
2.1 ASTM Standards:
prior to rupture of materials.
D76/D76M Specification for Tensile Testing Machines for
Textiles
3.2.5 final deflection—the deflection of the specimen from
D4354 Practice for Sampling of Geosynthetics and Rolled
its initial position (before testing begins) measured at mid span
Erosion Control Products (RECPs) for Testing
at the final breaking load.
D4439 Terminology for Geosynthetics
3.2.6 final flexural strength, n—the final flexural strength,
D8030/D8030M Practice for Sample Preparation for GCCM
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-
1
This test method is under the jurisdiction of ASTM Committee D35 on
machine direction, loaded as simple beams, when breaks occur
Geosynthetics and is the direct responsibility of Subcommittee D35.05 on Geosyn-
perpendicular to the specimen length, with the load applied at
thetic Erosion Control.
Current edition approved July 1, 2017. Published July 2017. Originally approved
the center, in a three-point loading fixture.
in 2017. Last previous edition approved in 2017 as D8058 – 17. DOI: 10.1520/
D8058-17E01.
3.2.7 geosynthetic cementitious composite mat (GCCM),
2
For referenced ASTM standards, visit the ASTM website, www.astm.org, or
n—a factory-assembled geosynthetic composite consisting of a
contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM
cementitious material contained within a layer or layers of
Standards volume information, refer to the standard’s Document Summary page on
the ASTM website. geosynthetic materials that becomes hardened when hydrated.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
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D8058 − 17
3.2.8 hydration, n—exposure of the GCCM, in this case, to top at mid span. The fixture is designed so that the specimen is
water in prescribed conditions for a prescribed time and water loaded and can be analyzed as a simple beam.The supports are
quantity when known. cylindrical on the specimen contact surface with a 3.2-mm
1 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.
´1
Designation: D8058 − 17 D8058 − 17
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
ε NOTE—Subsection 3.2.7 was corrected editorially in August 2017.
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
and health 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
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.
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.
3.2.4 final breaking load, n—the maximum load achieved prior to rupture of materials.
3.2.5 final deflection—the deflection of the specimen from its initial position (before testing begins) measured at mid span at
the final breaking load.
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, 2017. Published July 2017. Originally approved in 2017. Last previous edition approved in 2017 as D8058 – 17. DOI:
10.1520/D8058-17.10.1520/D8058-17E01.
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.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
1
---------------------- Page: 1 ----------------------
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D8058 − 17
3.2.6 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.
3.2.7 geosynthetic cementitious composite mat (GCCM), n—a factory-assembled geosynthetic composite consisting of a
cementitious layermaterial contained within a layer or layers of geosynthetic materials that becomes hardened when hydrated.
3.2.8 hydration, n—exposure of the
...
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