ASTM E518-03

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 E 72 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 The values stated in SI units are to be regarded as the standard.
1.3 This standard does not purport to address all of the safety problems, 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.

General Information

• Status: Historical
• Publication Date: 09-Jun-2003
• ICS: 91.060.10 - Walls. Partitions. Facades
• Technical Committee: C15 - Manufactured Masonry Units
• Drafting Committee: C15.04 - Research

Relations

• Replaces: ASTM E518-02 - Standard Test Methods for Flexural Bond Strength of Masonry
• Effective Date: 10-Jun-2003
• Replaced By: ASTM E518-09 - Standard Test Methods for Flexural Bond Strength of Masonry
• Effective Date: 15-Jun-2009
• Referred By: ASTM C901-18 - Standard Specification for Prefabricated Masonry Panels
• Effective Date: 10-Jun-2003

Standards Content (Sample)

NOTICE: This standard has either been superseded and replaced by a new version or withdrawn.
Contact ASTM International (www.astm.org) for the latest information
Designation:E518–03
Standard Test Methods for
1
Flexural Bond Strength of Masonry
This standard is issued under the fixed designation E 518; 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 (e) 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* 3. Significance and Use
1.1 These test methods cover determination of the flexural 3.1 These test methods are intended to provide simplified
bond strength of unreinforced masonry assemblages. Two and economical means for gathering comparative research data
procedures are provided: on the flexural bond strength developed with different types of
1.1.1 Test Method A—Simply supported beam with third- masonry units and mortar or for the purpose of checking job
point loading. quality control (materials and workmanship).
1.1.2 Test Method B—Simply supported beam with uniform
NOTE 1—These test methods are not intended for use in establishing
loading.
design stresses. For this purpose, Methods E 72 should be used.
1.2 The values stated in SI units are to be regarded as 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 E 4.
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 load is applied by means of a loading
bility of regulatory limitations prior to use.
apparatus similar to that described in Test Method C 78.
4.3 Test Method B—The uniform loading method is illus-
2. Referenced Documents
trated in Fig. 2. The load is applied by means of an air bag
2.1 ASTM Standards:
typically made of poly(vinyl chloride) 0.5 mm (0.02 in.) thick.
C 67 Test Methods for Sampling and Testing Brick and
The air bag shall be of any convenient thickness and shall have
2
Structural Clay Tile
a contact area equal to that of the specimen. It shall be
C 78 Test Method for Flexural Strength of Concrete (Using
equipped with two valves for inflating and deflating the bag.
3
Simple Beam with Third-Point Loading)
The air bag shall be backed by a steel channel suspended from
C 140 Test Methods for Sampling and Testing Concrete
the cross head of the testing machine with a suitable stud
2
Masonry Units and Related Units
welded to the web of the channel. The channel shall be an
2
C 270 Specification for Mortar for Unit Masonry
American Standard steel channel whose depth is equal to the
4
C 778 Specification for Standard Sand
width of the air bag. It is recommended that the air pressure in
5
E 4 Practices for Force Verification of Testing Machines
the bag be monitored during the test as a check against the test
E 72 Methods of Conducting Strength Tests of Panels for
machine dial indicator.
6
Building Construction
NOTE 2—When testing specimens constructed with a high bond-
E 575 Practice for Reporting Data from Structural Tests of
strength mortar, or whose thickness is greater than a nominal 100 mm (4
Building Constructions, Elements, Connections, and As-
in.), the applied load required to fail the specimen may be such as to
6
semblies
rupture the seams of the air bag. In such cases Test Method A is
recommended.
1
These test methods are under the jurisdiction of ASTM Committee C15 on
5. Sampling and Testing
Manufactured Masonry Units and are the direct responsibility of Subcommittee
C15.04 on Research.
5.1 Masonry Units—Representative masonry units shall be
Current edition approved June 10, 2003. Published September 2003. Originally
sampledandtestedinaccordancewiththefollowingapplicable
approved in 1974. Last previous edition approved in 2002 as E 518–02.
2
methods: Test Methods C 67 for brick, or Test Methods C 140
Annual Book of ASTM Standards, Vol 04.05.
3
Annual Book of ASTM Standards, Vol 04.02.
for concrete masonry units. Minimum tests required shall be
4
Annual Book of ASTM Standards, Vol 04.01.
compressive strength, and initial rate of absorption for brick or
5
Annual Book of ASTM Standards, Vol 03.01.
6 absorption for concrete masonry units.
Annual Book of ASTM Standards, Vol 04.11.
*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

---------------------- Page: 1 ----------------------
E518–03
FIG. 1 The Third-Point Loading Method (Test Method A)
FIG. 2 The Uniform Loading Method (Test Method B)
5.2 Mortar—One of the types o
...

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:E518–02 Designation: E 518 – 03
Standard Test Methods for
1
Flexural Bond Strength of Masonry
This standard is issued under the fixed designation E 518; 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.
1.2 The values stated in SI units are to be regarded as 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
2.1 ASTM Standards:
2
C67 Test Methods for Sampling and Testing Brick and Structural Clay Tile
3
C78 Test Method for Flexural Strength of Concrete (Using Simple Beam with Third-Point Loading)
2
C 140 Test Methods for Sampling and Testing Concrete Masonry Units and Related Units
2
C 270 Specification for Mortar for Unit Masonry
4
C 778 Specification for Standard Sand
5
E4 Practices for Force Verification of Testing Machines
6
E72 Methods of Conducting Strength Tests of Panels for Building Construction
6
E 575 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 E 72 should be used.
4. Apparatus
4.1 Testing Machine, conforming to the requirements of Practices E 4.
4.2 Test Method A—The third-point loading method is illustrated in Fig. 1. The load is applied by means of a loading apparatus
similar to that described in Test Method C 78.
4.3 Test Method B—The uniform loading method is illustrated in Fig. 2. The load is applied by means of an air bag typically
made of poly(vinyl chloride) 0.5 mm (0.02 in.) thick. The air bag shall be of any convenient thickness and shall have a contact
area equal to that of the specimen. It shall be equipped with two valves for inflating and deflating the bag. The air bag shall be
backed by a steel channel suspended from the cross head of the testing machine with a suitable stud welded to the web of the
channel. The channel shall be an American Standard steel channel whose depth is equal to the width of the air bag. It is
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 December 10, 2002. Published April 2003. Originally published as E518–74. Last previous edition E518–00a.
Current edition approved June 10, 2003. Published September 2003. Originally approved in 1974. Last previous edition approved in 2002 as E 518–02.
2
Annual Book of ASTM Standards, Vol 04.05.
3
Annual Book of ASTM Standards, Vol 04.02.
4
Annual Book of ASTM Standards, Vol 04.01.
5
Annual Book of ASTM Standards, Vol 03.01.
6
Annual Book of ASTM Standards, Vol 04.11.
*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

---------------------- Page: 1 ----------------------
E518–03
FIG. 1 The Third-Point Loading Method (Test Method A)
FIG. 2 The Uniform Loading Method (Test Method B)
recommended that the air pressure in the bag be monitored during the test as a check against the test machine dial indicator.
NOTE 2—When testing specimens constructed with a high bond-strength mortar, or whose thickness is greater than a nominal 100 mm (4 in.), the
applied load required to fail the specimen may be such as to rupture the seams of the air bag. In such cases Test Method A is recommended.
5. S
...