ASTM C293/C293M-10
(Test Method)Standard Test Method for Flexural Strength of Concrete (Using Simple Beam With Center-Point Loading)
Standard Test Method for Flexural Strength of Concrete (Using Simple Beam With Center-Point Loading)
SIGNIFICANCE AND USE
This test method is used to determine the modulus of rupture of specimens prepared and cured in accordance with Practices C31/C31M or C192/C192M. The strength determined will vary where there are differences in specimen size, preparation, moisture condition, or curing.
The results of this test method may be used to determine compliance with specifications or as a basis for proportioning, mixing and placement operations. This test method produces values of flexural strength significantly higher than Test Method .
SCOPE
1.1 This test method covers determination of the flexural strength of concrete specimens by the use of a simple beam with center-point loading. It is not an alternative to Test Method .
1.2 The values stated in either SI units or inch-pound units are to be regarded separately as standard. 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 non-conformance 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.
General Information
Relations
Buy Standard
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NOTICE: This standard has either been superseded and replaced by a new version or withdrawn.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: C293/C293M − 10
StandardTest Method for
Flexural Strength of Concrete (Using Simple Beam With
1
Center-Point Loading)
This standard is issued under the fixed designation C293/C293M; 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 U.S. Department of Defense.
1. Scope* 3. Significance and Use
1.1 This test method covers determination of the flexural
3.1 This test method is used to determine the modulus of
strength of concrete specimens by the use of a simple beam rupture of specimens prepared and cured in accordance with
with center-point loading. It is not an alternative to Test
Practices C31/C31M or C192/C192M. The strength deter-
Method C78/C78M. mined will vary where there are differences in specimen size,
preparation, moisture condition, or curing.
1.2 The values stated in either SI units or inch-pound units
are to be regarded separately as standard. The values stated in 3.2 The results of this test method may be used to determine
each system may not be exact equivalents; therefore, each
compliance with specifications or as a basis for proportioning,
system shall be used independently of the other. Combining mixing and placement operations. This test method produces
values from the two systems may result in non-conformance
values of flexural strength significantly higher than Test
with the standard. Method C78/C78M.
1.3 This standard does not purport to address all of the
4. Apparatus
safety concerns, if any, associated with its use. It is the
responsibility of the user of this standard to establish appro-
4.1 The testing machine shall conform to the requirements
priate safety and health practices and determine the applica-
of the sections on Basis of Verification, Corrections, and Time
bility of regulatory limitations prior to use.
Interval Between Verifications of Practices E4. Hand operated
testing machines having pumps that do not provide a continu-
2. Referenced Documents
ous loading to failure in one stroke are not permitted. Motor-
2
ized pumps or hand operated positive displacement pumps
2.1 ASTM Standards:
having sufficient volume in one continuous stroke to complete
C31/C31M Practice for Making and Curing Concrete Test
a test without requiring replenishment are permitted and shall
Specimens in the Field
be capable of applying loads at a uniform rate without shock or
C78/C78M Test Method for Flexural Strength of Concrete
interruption.
(Using Simple Beam with Third-Point Loading)
C192/C192M Practice for Making and Curing Concrete Test
4.2 Loading Apparatus—The mechanism by which forces
Specimens in the Laboratory
are applied to the specimen shall employ a load-applying block
C617 Practice for Capping Cylindrical Concrete Specimens
and two specimen support blocks. It shall ensure that all forces
C1077 Practice forAgencies Testing Concrete and Concrete
are applied perpendicular to the face of the specimen without
Aggregates for Use in Construction and Criteria for
eccentricity. A diagram of an apparatus that accomplishes this
Testing Agency Evaluation
purpose is shown in Fig. 1.
E4 Practices for Force Verification of Testing Machines
4.2.1 All apparatus for making center-point loading flexure
tests shall be similar to Fig. 1 and maintain the span length and
central position of the load-applying block with respect to the
1
This test method is under the jurisdiction of ASTM Committee C09 on support blocks constant within 61.0 mm [60.05 in.].
Concrete and ConcreteAggregates and is the direct responsibility of Subcommittee
4.2.2 Reactions shall be parallel to the direction of the
C09.61 on Testing for Strength.
applied load at all times during the test, and the ratio of the
Current edition approved Aug. 1, 2010. Published September 2010. Originally
horizontal distance between the point of load application and
approved in 1952. Last previous edition approved in 2008 as C293 – 08. DOI:
10.1520/C0293_C0293M-10.
nearest reaction to the depth of the beam shall be 1.5 62%.
2
For referenced ASTM standards, visit the ASTM website, www.astm.org, or
4.2.3 The load-applying and support blocks shall not be
contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM
more than 65 mm [2.50 in.] high, measured from the center or
Standards volume information, refer to the standard’s Document Summary page on
the ASTM website. the axis of pivot, and shall extend at least across the full width
*A Summary of Changes section appears at the end of this standard
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Consho
...
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:C293–08 Designation: C293/C293M – 10
Standard Test Method for
Flexural Strength of Concrete (Using Simple Beam With
1
Center-Point Loading)
This standard is issued under the fixed designation C293/C293M; 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 This test method covers determination of the flexural strength of concrete specimens by the use of a simple beam with
center-point loading. It is not an alternative to Test Method C78C78/C78M.
1.2The values stated in inch-pound units are to be regarded as standard.The SI equivalent of inch-pound units has been rounded
where necessary for practical application.
1.2 The values stated in either SI units or inch-pound units are to be regarded separately as standard. 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 non-conformance 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:
C31/C31M Practice for Making and Curing Concrete Test Specimens in the Field
C7878/C78M Test Method for Flexural Strength of Concrete (Using Simple Beam with Third-Point Loading)
C192/C192M Practice for Making and Curing Concrete Test Specimens in the Laboratory
C617 Practice for Capping Cylindrical Concrete Specimens
C1077 Practice for LaboratoriesTesting Concrete and ConcreteAggregates for Use in Construction and Criteria for Laboratory
Evaluation
E4 Practices for Force Verification of Testing Machines
3. Significance and Use
3.1 This test method is used to determine the modulus of rupture of specimens prepared and cured in accordance with Practices
C31/C31M or C192/C192M.The strength determined will vary where there are differences in specimen size, preparation, moisture
condition, or curing.
3.2 The results of this test method may be used to determine compliance with specifications or as a basis for proportioning,
mixing and placement operations. This test method produces values of flexural strength significantly higher than Test Method C78
(Note 1).
NOTE1—The testing laboratory performing this test method may be evaluated in accordance with Practice C1077C78/C78M.
4. Apparatus
4.1 The testing machine shall conform to the requirements of the sections on Basis of Verification, Corrections, and Time
Interval Between Verifications of Practices E4. Hand operated testing machines having pumps that do not provide a continuous
loadingtofailureinonestrokearenotpermitted.Motorizedpumpsorhandoperatedpositivedisplacementpumpshavingsufficient
volume in one continuous stroke to complete a test without requiring replenishment are permitted and shall be capable of applying
loads at a uniform rate without shock or interruption.
1
This test method is under the jurisdiction of ASTM Committee C09 on Concrete and Concrete Aggregates and is the direct responsibility of Subcommittee C09.61 on
Testing for Strength.
Current edition approved Feb.Aug. 1, 2008.2010. Published February 2008.September 2010. Originally approved in 1952. Last previous edition approved in 20072008
as C293–07.C293–08. DOI: 10.1520/C0293_C0293M-108.
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.
1
---------------------- Page: 1 ----------------------
C293/C293M – 10
4.2 Loading Apparatus—The mechanism by which forces are applied to the specimen shall employ a load-applying block and
two specimen support blocks. It shall ensure that all forces are applied perpendicular to the face of the specimen without
eccentricity. A diagram of an apparatus that accompli
...
Questions, Comments and Discussion
Ask us and Technical Secretary will try to provide an answer. You can facilitate discussion about the standard in here.