ASTM E518/E518M-22

Standard Test Methods for Flexural Bond Strength of Masonry

SIGNIFICANCE AND USE
4.1 These test methods are intended to provide simplified and economical means for gathering comparative research data on the flexural bond strength developed with different types of masonry units and mortar or for the purpose of checking job quality control (materials and workmanship).
Note 2: These test methods are not intended for use in establishing design stresses. For this purpose, Test Methods C1717 should be used.
SCOPE
1.1 These test methods cover determination of the flexural bond strength of unreinforced masonry assemblages. Two procedures are provided:  
1.1.1 Test Method A—Simply supported beam with third-point loading.  
1.1.2 Test Method B—Simply supported beam with uniform loading.
Note 1: Third-point loading (Test Method A) produces a moment distribution that is significantly different from uniformly distributed loading (Test Method B).Third-point loading (Test Method A) subjects more mortar joints to the maximum moment and thus, is likely to produce more conservative capacities than uniform loading (Test Method B).  
1.2 The text of this standard refers to notes and footnotes that provide explanatory material. These notes and footnotes (excluding those in tables and figures) shall not be considered as requirements of the standard.  
1.3 These test methods cover the application of the tests using either inch-pound or SI units. The values stated in either SI units or inch-pound units are to be regarded separately as standard. Within the text, the inch-pound units are shown in brackets. 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-Nov-2022
• ICS: 91.060.10 - Walls. Partitions. Facades
• Technical Committee: C15 - Manufactured Masonry Units
• Drafting Committee: C15.04 - Research

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: E518/E518M − 22
Standard Test Methods for
1
Flexural Bond Strength of Masonry
This standard is issued under the fixed designation E518/E518M; 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* 2. Referenced Documents
2
1.1 These test methods cover determination of the flexural 2.1 ASTM Standards:
bond strength of unreinforced masonry assemblages. Two C67/C67M Test Methods for Sampling and Testing Brick
and Structural Clay Tile
procedures are provided:
1.1.1 Test Method A—Simply supported beam with third- C78/C78M Test Method for Flexural Strength of Concrete
(Using Simple Beam with Third-Point Loading)
point loading.
1.1.2 Test Method B—Simply supported beam with uniform C140/C140M Test Methods for Sampling and Testing Con-
crete Masonry Units and Related Units
loading.
C270 Specification for Mortar for Unit Masonry
NOTE 1—Third-point loading (Test Method A) produces a moment
C778 Specification for Standard Sand
distribution that is significantly different from uniformly distributed
C1232 Terminology for Masonry
loading (Test Method B).Third-point loading (Test Method A) subjects
more mortar joints to the maximum moment and thus, is likely to produce C1717 Test Methods for Conducting Strength Tests of Ma-
more conservative capacities than uniform loading (Test Method B).
sonry Wall Panels
E4 Practices for Force Calibration and Verification of Test-
1.2 The text of this standard refers to notes and footnotes
that provide explanatory material. These notes and footnotes ing Machines
E575 Practice for Reporting Data from Structural Tests of
(excluding those in tables and figures) shall not be considered
as requirements of the standard. Building Constructions, Elements, Connections, and As-
semblies
1.3 These test methods cover the application of the tests
using either inch-pound or SI units. The values stated in either
3. Terminology
SI units or inch-pound units are to be regarded separately as
3.1 For terms used in these test methods, refer to Terminol-
standard. Within the text, the inch-pound units are shown in
ogy C1232.
brackets. The values stated in each system may not be exact
equivalents;therefore,eachsystemshallbeusedindependently
4. Significance and Use
of the other. Combining values from the two systems may
4.1 These test methods are intended to provide simplified
result in nonconformance with the standard.
and economical means for gathering comparative research data
1.4 This standard does not purport to address all of the
on the flexural bond strength developed with different types of
safety concerns, if any, associated with its use. It is the
masonry units and mortar or for the purpose of checking job
responsibility of the user of this standard to establish appro-
quality control (materials and workmanship).
priate safety, health, and environmental practices and deter-
mine the applicability of regulatory limitations prior to use.
NOTE 2—These test methods are not intended for use in establishing
design stresses. For this purpose, Test Methods C1717 should be used.
1.5 This international standard was developed in accor-
dance with internationally recognized principles on standard-
5. Apparatus
ization established in the Decision on Principles for the
Development of International Standards, Guides and Recom- 5.1 Testing Machine, conforming to the requirements of
Practices E4.
mendations issued by the World Trade Organization Technical
Barriers to Trade (TBT) Committee.
5.2 Test Method A—The third-point loading method is
illustrated in Fig. 1.The minimum span between supports shall
not be less than 2.5 multiplied by the average depth of the
1
These test methods are under the jurisdiction of ASTM Committee C15 on
Manufactured Masonry Units and are the direct responsibility of Subcommittee
2
C15.04 on Research. For referenced ASTM standards, visit the ASTM website, www.astm.org, or
Current edition approved Dec. 1, 2022. Published December 2022. Originally contact ASTM Customer Service at [e-mail]. For Annual Book of ASTM
approved in 1974. Last previous edition approved in 2021 as E518/E518M – 21. Standards volume information, refer to the standard’s Document Summary page on
DOI: 10.1520/E0518_E0518M-22. the ASTM website.
*A Summary of Changes section appears at the end of this standard
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
1

----------------
...

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: E518/E518M − 21 E518/E518M − 22
Standard Test Methods for
1
Flexural Bond Strength of Masonry
This standard is issued under the fixed designation E518/E518M; 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 These test methods cover determination of the flexural bond strength of unreinforced masonry assemblages. Two procedures
are provided:
1.1.1 Test Method A—Simply supported beam with third-point loading.
1.1.2 Test Method B—Simply supported beam with uniform loading.
NOTE 1—Third-point loading (Test Method A) produces a moment distribution that is significantly different from uniformly distributed loading (Test
Method B).Third-point loading (Test Method A) subjects more mortar joints to the maximum moment and thus, is likely to produce more conservative
capacities than uniform loading (Test Method B).
1.2 The text of this standard refers to notes and footnotes that provide explanatory material. These notes and footnotes (excluding
those in tables and figures) shall not be considered as requirements of the standard.
1.3 These test methods cover the application of the tests using either inch-pound or SI units. The values stated in either SI units
or inch-pound units are to be regarded separately as standard. Within the text, the inch-pound units are shown in brackets. 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.
2. Referenced Documents
2
2.1 ASTM Standards:
C67C67/C67M Test Methods for Sampling and Testing Brick and Structural Clay Tile
C78C78/C78M Test Method for Flexural Strength of Concrete (Using Simple Beam with Third-Point Loading)
C140C140/C140M Test Methods for Sampling and Testing Concrete Masonry Units and Related Units
1
These test methods are under the jurisdiction of ASTM Committee C15 on Manufactured Masonry Units and are the direct responsibility of Subcommittee C15.04 on
Research.
Current edition approved June 1, 2021Dec. 1, 2022. Published January 2016December 2022. Originally approved in 1974. Last previous edition approved in 20152021
as E518 – 15.E518/E518M – 21. DOI: 10.1520/E0518_E0518M-21.10.1520/E0518_E0518M-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.
*A Summary of Changes section appears at the end of this standard
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
1

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E518/E518M − 22
C270 Specification for Mortar for Unit Masonry
C778 Specification for Standard Sand
C1232 Terminology for Masonry
C1717 Test Methods for Conducting Strength Tests of Masonry Wall Panels
E4 Practices for Force Calibration and Verification of Testing Machines
E575 Practice for Reporting Data from Structural Tests of Building Constructions, Elements, Connections, and Assemblies
3. Terminology
3.1 For terms used in these test methods, refer to Terminology C1232.
4. Significance and Use
4.1 These test methods are intended to provide simplified and economical means for gathering comparative research data on the
flexural bond strength developed with different types of masonry units and mortar or for the purpose of checking job quality control
(materials and workmanship).
NOTE 2—These test methods are not intended for use in establishing design stresses. For this purpose, Test Methods C1717 should be used.
5. Ap
...