ASTM C1064/C1064M-05
(Test Method)Standard Test Method for Temperature of Freshly Mixed Hydraulic-Cement Concrete
Standard Test Method for Temperature of Freshly Mixed Hydraulic-Cement Concrete
SIGNIFICANCE AND USE
This test method provides a means for measuring the temperature of freshly mixed concrete. It may be used to verify conformance to a specified requirement for temperature of concrete.
Concrete containing aggregate of a nominal maximum size greater than 3 in. [75 mm] may require up to 20 min for the transfer of heat from aggregate to mortar. (See ACI Committee 207.1R Report.4 )
SCOPE
1.1 This test method covers the determination of temperature of freshly mixed hydraulic-cement concrete.
1.2 The values stated in inch-pound or SI units are to be regarded separately as standard. Within the text, SI units are shown in brackets. The values stated in each system are not exact equivalents; therefore, each system shall be used independently of the other. Combining values from the two systems may result in nonconformance with the specification.
1.3 The text of this standard references notes and footnotes that provide explanatory information. These notes and footnotes (excluding those in tables and figures) shall not be considered as requirements of this standard.
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. (Warning-Fresh hydraulic cementitious mixtures are caustic and may cause chemical burns to skin and tissue upon prolonged exposure.)
General Information
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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NOTICE: This standard has either been superseded and replaced by a new version or withdrawn.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: C 1064/C 1064M – 05
Standard Test Method for
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Temperature of Freshly Mixed Hydraulic-Cement Concrete
This standard is issued under the fixed designation C 1064/C 1064M; 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 Concrete containing aggregate of a nominal maximum
sizegreaterthan3in.[75mm]mayrequireupto20minforthe
1.1 This test method covers the determination of tempera-
transfer of heat from aggregate to mortar. (SeeACI Committee
ture of freshly mixed hydraulic-cement concrete.
4
207.1R Report. )
1.2 The values stated in inch-pound or SI units are to be
regarded separately as standard. Within the text, SI units are
4. Apparatus
shown in brackets. The values stated in each system are not
4.1 Container, shall be large enough to provide at least 3 in.
exact equivalents; therefore, each system shall be used inde-
[75 mm] of concrete in all directions around the sensor of the
pendentlyoftheother.Combiningvaluesfromthetwosystems
temperature measuring device; concrete cover must also be at
may result in nonconformance with the specification.
least three times the nominal maximum size of the coarse
1.3 The text of this standard references notes and footnotes
aggregate.
that provide explanatory information. These notes and foot-
4.2 Temperature Measuring Device, shall be capable of
notes (excluding those in tables and figures) shall not be
accurately measuring the temperature of the freshly mixed
considered as requirements of this standard.
concrete to 61°F[60.5 °C] throughout a range of 30° to 120
1.4 This standard does not purport to address all of the
°F [0° to 50 °C]. The design of the temperature measuring
safety concerns, if any, associated with its use. It is the
device shall be such that it allows 3 in. [75 mm] or more
responsibility of the user of this standard to establish appro-
immersion during operation.
priate safety and health practices and determine the applica-
4.3 Partial immersion liquid-in-glass thermometers (and
bility of regulatory limitations prior to use. (Warning—Fresh
possibly other types) shall have a permanent mark to which the
hydraulic cementitious mixtures are caustic and may cause
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device must be immersed without applying a correction factor.
chemical burns to skin and tissue upon prolonged exposure. )
4.4 Reference Temperature Measuring Device, shall be
2. Referenced Documents readable and accurate to 60.5 °F [0.2 °C] at the verification
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points in 5.1. A certificate or report that verifies the accuracy
2.1 ASTM Standards:
shall be available in the laboratory for review. Accuracy of
C 172 Practice for Sampling Freshly Mixed Concrete
liquid-in-glass reference temperature measuring devices shall
C 670 Practice for Preparing Precision and Bias Statements
be verified once. Verification of direct-reading resistance ref-
for Test Methods for Construction Materials
erence temperature measuring devices shall be performed
3. Significance and Use every twelve months. The certificate or report shall provide
documentation that the reference standard used in the verifi-
3.1 This test method provides a means for measuring the
cation is traceable to the National Institute of Standards and
temperature of freshly mixed concrete. It may be used to verify
Technology (NIST).
conformance to a specified requirement for temperature of
concrete.
5. Calibration of Temperature Measuring Device
5.1 Each temperature measuring device used for determin-
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This test method is under the jurisdiction of ASTM Committee C09 on
ing temperature of freshly mixed concrete shall be calibrated
Concrete and ConcreteAggregates and is the direct responsibility of Subcommittee
annually, or whenever there is a question of accuracy. This
C09.60 on Testing Fresh Concrete .
Current edition approved Jan. 1, 2005. Published January 2005. Originally calibrationshallbeperformedbycomparingthereadingsofthe
approved in 1986. Last previous edition approved in 2004 as C 1064 – 04.
temperature measuring device at two temperatures at least 30
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Section on Safety Precautions, Manual of Aggregate and Concrete Testing,
°F [15 °C] apart.
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 Available from American Concrete Institute, Box 9094, Farmington Hills, MI
the ASTM website. 48333.
*A Summary of Changes section ap
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