ASTM C900-06

NOTICE: This standard has either been superseded and replaced by a new version or withdrawn.
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Designation: C900 − 06
StandardTest Method for
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Pullout Strength of Hardened Concrete
This standard is issued under the fixed designation C900; the number immediately following the designation indicates the year of
original adoption or, in the case of revision, the year of last revision.Anumber in parentheses indicates the year of last reapproval.A
superscript epsilon (´) indicates an editorial change since the last revision or reapproval.
1. Scope* 3. Summary of Test Method
3.1 A metal insert is either cast into fresh concrete or
1.1 This test method covers determination of the pullout
installed into hardened concrete. When an estimate of the
strength of hardened concrete by measuring the force required
in-place strength is desired, the insert is pulled by means of a
to pull an embedded metal insert and the attached concrete
jack reacting against a bearing ring. The pullout strength is
fragmentfromaconcretetestspecimenorstructure.Theinsert
determined by measuring the maximum force required to pull
is either cast into fresh concrete or installed in hardened
the insert from the concrete mass. Alternatively, the insert is
concrete. This test method does not provide statistical proce-
loadedtoaspecifiedloadtoverifywhetheraminimumlevelof
dures to estimate other strength properties.
in-place strength has been attained.
1.2 The values stated in SI units are to be regarded as the
standard.
4. Significance and Use
1.3 The text of this test method references notes and
4.1 For a given concrete and a given test apparatus, pullout
footnoteswhichprovideexplanatorymaterial.Thesenotesand
strengths can be related to compressive strength test results.
footnotes (excluding those in tables and figures) shall not be
Such strength relationships depend on the configuration of the
considered as requirements of this test method.
embedded insert, bearing ring dimensions, depth of
embedment,andlevelofstrengthdevelopmentinthatconcrete.
1.4 This standard does not purport to address all of the
Prior to use, these relationships must be established for each
safety concerns, if any, associated with its use. It is the
system and each new combination of concreting materials.
responsibility of the user of this standard to establish appro-
Such relationships tend to be less variable where both pullout
priate safety and health practices and determine the applica-
test specimens and compressive strength test specimens are of
bility of regulatory limitations prior to use. (WARNING—
similar size, compacted to similar density, and cured under
Fresh hydraulic cementitious mixtures are caustic and may
similar conditions.
cause chemical burns to skin and tissue upon prolonged
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exposure.)
NOTE1—Publishedreports (1-17) bydifferentresearcherspresenttheir
experiencesintheuseofpullouttestequipment.RefertoACI228.1R (14)
for guidance on establishing a strength relationship and interpreting test
2. Referenced Documents
results. The Appendix provides a means for comparing pullout strengths
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obtained using different configurations.
2.1 ASTM Standards:
C670Practice for Preparing Precision and Bias Statements
4.2 Pullout tests are used to determine whether the in-place
for Test Methods for Construction Materials
strength of concrete has reached a specified level so that, for
E4Practices for Force Verification of Testing Machines
example:
E74Practice of Calibration of Force-Measuring Instruments
(1)post-tensioning may proceed;
for Verifying the Force Indication of Testing Machines
(2)forms and shores may be removed; or
(3)winter protection and curing may be terminated.
In addition, post-installed pullout tests may be used to
1 estimate the strength of concrete in existing constructions.
This test method is under the jurisdiction of ASTM Committee C09 on
Concrete and ConcreteAggregatesand is the direct responsibility of Subcommittee
4.3 When planning pullout tests and analyzing test results,
C09.64 on Nondestructive and In-Place Testing.
consideration should be given to the normally expected de-
Current edition approved Dec. 15, 2006. Published January 2007. Originally
approved in 1978. Last previous edition approved in 2001 as C900–01. DOI: crease of concrete strength with increasing height within a
10.1520/C0900-06.
given concrete placement in a structural element. The mea-
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Section on Safety Precautions, Manual of Aggregate and Concrete Testing,
sured pullout strength is indicative of the strength of concrete
Annual Book of ASTM Standards, Vol. 04.02.
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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
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Standards volume information, refer to the standard’s Document Summary page on The boldface numbers refer to the list of references at the end of this test
the ASTM website. method.
*A Summary of Changes sec
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