ASTM E518/E518M-10
(Test Method)Standard Test Methods for Flexural Bond Strength of Masonry
Standard Test Methods for Flexural Bond Strength of Masonry
SIGNIFICANCE AND USE
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 1—These test methods are not intended for use in establishing design stresses. For this purpose, Methods E72 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.
1.2 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.
1.3 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.
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Designation: E518/E518M − 10
StandardTest 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* E72 Test Methods of Conducting Strength Tests of Panels
for Building Construction
1.1 These test methods cover determination of the flexural
E575 Practice for Reporting Data from Structural Tests of
bond strength of unreinforced masonry assemblages. Two
Building Constructions, Elements, Connections, and As-
procedures are provided:
semblies
1.1.1 Test Method A—Simply supported beam with third-
point loading.
3. Significance and Use
1.1.2 Test Method B—Simply supported beam with uniform
loading.
3.1 These test methods are intended to provide simplified
and economical means for gathering comparative research data
1.2 These test methods cover the application of the tests
on the flexural bond strength developed with different types of
using either inch-pound or SI units. The values stated in either
masonry units and mortar or for the purpose of checking job
SI units or inch-pound units are to be regarded separately as
quality control (materials and workmanship).
standard. Within the text, the inch-pound units are shown in
brackets. The values stated in each system may not be exact
NOTE 1—These test methods are not intended for use in establishing
equivalents;therefore,eachsystemshallbeusedindependently
design stresses. For this purpose, Methods E72 should be used.
of the other. Combining values from the two systems may
result in nonconformance with the standard. 4. Apparatus
1.3 This standard does not purport to address all of the
4.1 Testing Machine, conforming to the requirements of
safety concerns, if any, associated with its use. It is the
Practices E4.
responsibility of the user of this standard to establish appro-
4.2 Test Method A—The third-point loading method is
priate safety and health practices and determine the applica-
illustrated in Fig. 1.The minimum span between supports shall
bility of regulatory limitations prior to use.
not be less than 2.5 multiplied by the average depth of the
specimen. The distance between each support and the adjacent
2. Referenced Documents
distributed point load shall be one-third of the span length
2
2.1 ASTM Standards:
63 mm [0.1 in.]. Steel rods with a maximum diameter of 25
C67 Test Methods for Sampling and Testing Brick and
mm [1 in.] shall be used to support the specimen and apply the
Structural Clay Tile
load. The steel rods shall extend over the full width of the
C78 Test Method for Flexural Strength of Concrete (Using
specimen and shall have the same nominal diameter.
Simple Beam with Third-Point Loading)
NOTE 2—The loading apparatus is intended to be similar to that used in
C140 Test Methods for Sampling and Testing Concrete
Test Method C78 to reduce the need for redundant testing equipment.
Masonry Units and Related Units
4.3 Test Method B—The uniform loading method is illus-
C270 Specification for Mortar for Unit Masonry
trated in Fig. 2. The minimum span between supports shall not
C778 Specification for Sand
be less than 2.5 multiplied by the average depth of the
E4 Practices for Force Verification of Testing Machines
specimen. Uniformly distributed transverse load shall be ap-
pliedbyairpressureusinganairbagoverthefullsurfaceofthe
specimen. The air bag reaction frame shall fully contact one
1
These test methods are under the jurisdiction of ASTM Committee C15 on
surface of the air bag and shall be sufficiently stiff as to not
Manufactured Masonry Units and are the direct responsibility of Subcommittee
deflect more than the span divided by 600 during testing.
C15.04 on Research.
CurrenteditionapprovedJune1,2010.PublishedJuly2010.Originallyapproved
NOTE 3—Air bags manufactured using 0.5 mm [0.02 in.] thick
in 1974. Last previous edition approved in 2009 as E518 – 09. DOI: 10.1520/E0518
polyvinyl chloride have been successfully used with this test. When
_E0518M-10.
2
testing specimens constructed with a high bond-strength mortar, or whose
For referenced ASTM standards, visit the ASTM website, www.astm.org, or
thickness is greater than a nominal 100 mm [4 in.], the applied load
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 required to fail the specimen may be such as to rupture the seams of the
the ASTM website. air bag. In such cases Test Method A is recommended.
*A Summary of Changes section appears at the end of this standard
Copyright © ASTM
...
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:E518–09 Designation: E518/E518M – 10
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.
This standard has been approved for use by agencies of the Department of Defense.
1. Scope*
1.1 Thesetestmethodscoverdeterminationoftheflexuralbondstrengthofunreinforcedmasonryassemblages.Twoprocedures
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.
1.2The values stated in SI units are to be regarded as the standard.The inch-pound units given in parentheses are for information
only.
1.2 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.
1.3 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:
C67 Test Methods for Sampling and Testing Brick and Structural Clay Tile
C78 Test Method for Flexural Strength of Concrete (Using Simple Beam with Third-Point Loading)
C140 Test Methods for Sampling and Testing Concrete Masonry Units and Related Units
C270 Specification for Mortar for Unit Masonry
C778 Specification for Standard Sand
E4 Practices for Force Verification of Testing Machines
E72 Test Methods of Conducting Strength Tests of Panels for Building Construction
E575 Practice for Reporting Data from Structural Tests of Building Constructions, Elements, Connections, and Assemblies
3. Significance and Use
3.1 These test methods are intended to provide simplified and economical means for gathering comparative research data on the
flexuralbondstrengthdevelopedwithdifferenttypesofmasonryunitsandmortarorforthepurposeofcheckingjobqualitycontrol
(materials and workmanship).
NOTE 1—These test methods are not intended for use in establishing design stresses. For this purpose, Methods E72 should be used.
4. Apparatus
4.1 Testing Machine, conforming to the requirements of Practices E4.
4.2 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 specimen.The distance between each support and the adjacent distributed point
load shall be one-third of the span length 63 mm (0.1 in.). 63 mm [0.1 in.]. Steel rods with a maximum diameter of 25 mm (1
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 15, 2009.1, 2010. Published July 2009.2010. Originally approved in 1974. Last previous edition approved in 20032009 as E518 – 039. DOI:
10.1520/E0518_E0518M-109.
2
For referencedASTM standards, visit theASTM website, www.astm.org, or contactASTM Customer Service at service@astm.org. For Annual Book ofASTM 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.
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E518/E518M – 10
FIG. 1 The Third-Point Loading Method (Test Method A)
in.)[1 in.] shall be used to support the specimen and apply the load. The steel rods shall extend over the full width of the specimen
and shall have the same nominal diameter.
NOTE 2—The loading apparatus is intended to be similar to that used in Test Method C78 to reduce the need for redundant testing equipment.
4.3 Test Method B—The uniform loading method is illustrated in Fig. 2. The minimum span betwee
...
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