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ASTM C1072-05a

(Test Method)

Standard Test Method for Measurement of Masonry Flexural Bond Strength

Standard Test Method for Measurement of Masonry Flexural Bond Strength

SCOPE
1.1 This test method covers the determination of flexural bond strength of nonreinforced masonry by physical testing of each joint of masonry prisms.
1.2This 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.

General Information

Status
Historical
Publication Date
14-May-2005
ICS
91.060.10 - Walls. Partitions. Facades
Technical Committee
C15 - Manufactured Masonry Units
Drafting Committee
C15.04 - Research
Current Stage
Ref Project

Relations

Replaces
ASTM C1072-05 - Standard Test Method for Measurement of Masonry Flexural Bond Strength
Effective Date
15-May-2005
Replaced By
ASTM C1072-05b - Standard Test Method for Measurement of Masonry Flexural Bond Strength
Effective Date
15-Nov-2005
Referred By
ASTM C1329/C1329M-23 - Standard Specification for Mortar Cement
Effective Date
15-May-2005
Referred By
ASTM C1384-18e1 - Standard Specification for Admixtures for Masonry Mortars
Effective Date
15-May-2005
Referred By
ASTM C1692-18 - Standard Practice for Construction and Testing of Autoclaved Aerated Concrete (AAC) Masonry
Effective Date
15-May-2005
Referred By
ASTM C1713-23 - Standard Specification for Mortars for the Repair of Historic Masonry
Effective Date
15-May-2005
Referred By
ASTM C1093-23 - Standard Practice for Accreditation of Testing Agencies for Masonry
Effective Date
15-May-2005
Referred By
ASTM C270-19ae1 - Standard Specification for Mortar for Unit Masonry
Effective Date
15-May-2005
Referred By
ASTM C1587/C1587M-21a - Standard Practice for Preparation of Field Removed Manufactured Masonry Units and Masonry Specimens for Testing
Effective Date
15-May-2005
Referred By
ASTM C1825-19 - Standard Guide for Developing Specifications for Masonry Units
Effective Date
15-May-2005

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ASTM C1072-05a - Standard Test Method for Measurement of Masonry Flexural Bond StrengthASTM C1072-05a - Standard Test Method for Measurement of Masonry Flexural Bond Strength
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ASTM C1072-05a - Standard Test Method for Measurement of Masonry Flexural Bond Strength
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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:C1072–05a
Standard Test Method for
1
Measurement of Masonry Flexural Bond Strength
This standard is issued under the fixed designation C 1072; 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* 3.2 The bond strengths determined from this test method
can be used as a means of evaluating the compatibility of
1.1 This test method covers the determination of flexural
mortars and masonry units. It may also be used to determine
bond strength of nonreinforced masonry by physical testing of
the effect on flexural bond strength of such factors as masonry
each joint of masonry prisms.
unit and mortar properties, workmanship, curing conditions,
1.2 This standard does not purport to address all of the
coatings on masonry units, or any other factors that may be of
safety concerns, if any, associated with its use. It is the
concern.
responsibility of the user of this standard to establish appro-
3.3 Flexural bond strength determined by this test method
priate safety and health practices and determine the applica-
should not be interpreted as the flexural bond strength of a wall
bility of regulatory limitations prior to use.
constructed of the same material. However, results may be
2. Referenced Documents
used to predict the flexural strength of a wall. Nor should it be
2
interpreted as an indication of extent of bond for purposes of
2.1 ASTM Standards:
water permeance evaluation.
C67 Test Methods of Sampling and Testing Brick and
Structural Clay Tile
4. Apparatus
C 140 Test Methods of Sampling and Testing Concrete
4.1 The test apparatus is shown in Figs. 1-4. The upper and
Masonry Units
lower clamping mechanisms shall be constructed as shown,
C 270 Specification for Mortar for Unit Masonry
except that the hex head bolts are permitted to be replaced by
C 780 Test Method for Preconstruction and Construction
other tightening devices of equal, or greater, strength and
Evaluation of Mortars for Plain and Reinforced Unit
stiffness. The support frame shall be constructed as shown or
Masonry
shall be constructed using configurations and materials of
C 1357 Test Methods for Evaluating Masonry Bond
equal, or greater, strength and stiffness. The testing apparatus
Strength
shall be constructed to apply the load vertically downward on
C 1532 Practice for Selection, Removal, and Shipment of
the upper clamping system in such a manner that the upper and
Masonry Assemblage Specimens from Existing Construc-
lower clamp do not come in contact during the tests.The prism
tion
support system shall be able to accommodate the size of the
3. Significance and Use
prism to be tested.
3.1 This test method is intended to provide a simple and
5. Sampling and Testing
economical means for the determination of comparative values
5.1 Brick Masonry Units—Representative brick masonry
of flexural bond strength. It may be used either on specimens
units shall be sampled and tested in accordance with Test
especially fabricated for bond strength evaluation or on speci-
MethodsC67.
mens cut from existing masonry.
NOTE 1—Brick properties for which there are methods of test in Test
MethodsC67 that may be of interest are cold-water absorption, boiling-
1
This test method is under the jurisdiction of ASTM Committee C15 on
water absorption, initial rate of absorption, and compressive strength.
Manufactured Masonry Units and is the direct responsibility of Subcommittee
5.2 Concrete Masonry Units—Representative concrete ma-
C15.04 on Research.
Current edition approved May 15, 2005. Published July 2005. Originally
sonry units shall be sampled and tested in accordance withTest
approved in 1993. Last previous edition approved in 2005 as C 1072–05.
Methods C 140.
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.
*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 ----------------------
C1072–05a
FIG. 1 Bond Wrench Testing Apparatus
5.3 Mortar—When mortar property testing is specified, the 6.3.1.4 Repeat 6.3.1.2 and 6.3.1.3 until the prisms are the
compressivestrength,aircontent,initialflow,conepenetration, desired height. Identify all specimens using a water-resistant
and water retention shall be determined in accord
...

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5.1 This test method evaluates the following under the specified test conditions:  
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5.1.2 The duration for which a test specimen will contain a fire and retain its integrity during a predetermined fire resistive test exposure.  
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5.2.1 Ability of the test specimen  to movement cycle.  
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5.2.4 Ability of the test specimen  to resist the passage of water during a hose stream test.  
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5.3.1 Any information about the rated wall assembly because its performance has already been determined.  
5.3.2 Evaluation of the degree by which the test specimen contributes to the fire hazard by generation of smoke, toxic gases, or other products of combustion.  
5.3.3 Measurement of the degree of control or limitation of the passage of smoke or products of combustion through the test specimen.  
5.3.4 Measurement of flame spread over the surface of the test specimen.
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1.4 The fire resistive test end point is the period of time elapsing before the first performance criteria is reached when the continuity head-of-wall joint system is subjected to one of two time-temperature fire exposures.  
1.5 The fire exposure conditions used are either those specified by Test Method E119 for testing assemblies to standard time-temperature exposures or Test Method E1529 for testing assemblies to rapid-temperature rise fires.  
1.6 This test method specifies the heating conditions, methods of test, and criteria to establish a fire resistance rating only for a continuity head-of-wall joint system.  
1.7 Test results establish the performance of continuity head-of-wall joint systems to maintain continuity of fire resistance of the rated wall assembly where the continuity head-of-wall joint system interfaces with a nonrated horizontal assembly during the fire-exposure period.  
1.8 Test results shall not be construed as having determined the continuity head-of-wall joint system, nonrated horizontal assembly and the rated wall assembly’s suitability for use after that ...

  • Standard
    16 pages
    English language
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  • Standard
    16 pages
    English language
    sale 15% off