ASTM C1849/C1849M-17
(Test Method)Standard Test Method for Density and Air Content (Pressure Method) of Freshly Mixed Roller-Compacted Concrete
Standard Test Method for Density and Air Content (Pressure Method) of Freshly Mixed Roller-Compacted Concrete
SIGNIFICANCE AND USE
4.1 The test determines the air content of freshly mixed RCC exclusive of any air that may exist inside voids within aggregate particles. For this reason, it is applicable to concrete made with normal-density or high-density aggregate particles and requires determination of the aggregate correction factor described in Test Method C231/C231M.
4.2 If the concrete being tested contains aggregate that would be retained on a 50-mm (2-in.) sieve, the air content of the total mixture is only approximated by the test.
4.3 The test determines the density of freshly mixed RCC containing aggregate with a maximum size not greater than 50-mm (2-in.).
4.4 The air content of hardened RCC may be either higher or lower than that determined by this test method. This depends upon the methods and amount of consolidation effort applied to the RCC from which the hardened concrete specimen is taken; uniformity and stability of the air bubbles in the fresh RCC; accuracy of the microscopic examination, if used; stage in the delivery at which the air content of the unhardened RCC is determined; and other factors.
SCOPE
1.1 This test method covers the determination of density and air content of freshly mixed roller-compacted concrete (RCC) using the apparatus described in Test Method C231/C231M and the vibrating hammer described in Test Method C1435/C1435M.
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.
Note 1: Sieve size is identified by its standard designation in Specification E11. The alternative designation given in parentheses is for information only and does not represent a different standard sieve size.
1.3 The text of this test method 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.
1.4 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.)2
1.5 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.
General Information
Relations
Standards Content (Sample)
This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the
Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.
Designation: C1849/C1849M − 17
Standard Test Method for
Density and Air Content (Pressure Method) of Freshly Mixed
1
Roller-Compacted Concrete
This standard is issued under the fixed designation C1849/C1849M; 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.
1. Scope 2. Referenced Documents
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2.1 ASTM Standards:
1.1 Thistestmethodcoversthedeterminationofdensityand
C31/C31M Practice for Making and Curing Concrete Test
air content of freshly mixed roller-compacted concrete (RCC)
Specimens in the Field
using the apparatus described in Test Method C231/C231M
C125 Terminology Relating to Concrete and Concrete Ag-
and the vibrating hammer described in Test Method C1435/
gregates
C1435M.
C138/C138M Test Method for Density (Unit Weight),Yield,
1.2 The values stated in either SI units or inch-pound units
and Air Content (Gravimetric) of Concrete
are to be regarded separately as standard. The values stated in
C172/C172M Practice for Sampling Freshly Mixed Con-
each system may not be exact equivalents; therefore, each crete
system shall be used independently of the other. Combining C192/C192M Practice for Making and Curing Concrete Test
Specimens in the Laboratory
values from the two systems may result in non-conformance
C231/C231M Test Method forAir Content of Freshly Mixed
with the standard.
Concrete by the Pressure Method
NOTE 1—Sieve size is identified by its standard designation in Speci-
fication E11. The alternative designation given in parentheses is for C670 Practice for Preparing Precision and Bias Statements
information only and does not represent a different standard sieve size.
for Test Methods for Construction Materials
C1067 Practice for Conducting a Ruggedness Evaluation or
1.3 The text of this test method references notes and
Screening Program for Test Methods for Construction
footnotes that provide explanatory information. These notes
Materials
and footnotes (excluding those in tables and figures) shall not
C1170/C1170M Test Method for Determining Consistency
be considered as requirements of this standard.
and Density of Roller-Compacted Concrete Using a Vi-
1.4 This standard does not purport to address all of the
brating Table
safety concerns, if any, associated with its use. It is the C1435/C1435M Practice for Molding Roller-Compacted
responsibility of the user of this standard to establish appro- Concrete in Cylinder Molds Using a Vibrating Hammer
E11 Specification for Woven Wire Test Sieve Cloth and Test
priate safety and health practices and determine the applica-
Sieves
bility of regulatory limitations prior to use. (Warning—Fresh
hydraulic cementitious mixtures are caustic and may cause
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3. Terminology
chemical burns to skin and tissue upon prolonged exposure.)
3.1 Definitions:
1.5 This international standard was developed in accor-
3.1.1 For definitions of terms used in this test method, refer
dance with internationally recognized principles on standard-
to Terminology C125.
ization established in the Decision on Principles for the
Development of International Standards, Guides and Recom-
4. Significance and Use
mendations issued by the World Trade Organization Technical
4.1 The test determines the air content of freshly mixed
Barriers to Trade (TBT) Committee.
RCC exclusive of any air that may exist inside voids within
aggregate particles. For this reason, it is applicable to concrete
made with normal-density or high-density aggregate particles
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This test method is under the jurisdiction of ASTM Committee C09 on
Concrete and ConcreteAggregates and is the direct responsibility of Subcommittee
C09.45 on Roller-Compacted Concrete.
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Current edition approved June 15, 2017. Published July 2017. DOI: 10.1520/ For referenced ASTM standards, visit the ASTM website, www.astm.org, or
C1849_C1849M-17. contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM
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Section on Safety Precautions, Manual of Aggregate and Concrete Testing, Standards volume information, refer to the standard’s Document Summary page on
Annual Book of ASTM Standards, Vol 04.02. the ASTM website.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
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C1849/C1849M − 17
and requires determination of the aggregate correction factor 7. Determination of Aggregate Correction Factor
described in Test Method C231/C231M.
7.1 Determine the aggregate
...
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