ASTM C128-07a
(Test Method)Standard Test Method for Density, Relative Density (Specific Gravity), and Absorption of Fine Aggregate
Standard Test Method for Density, Relative Density (Specific Gravity), and Absorption of Fine Aggregate
SCOPE
1.1 This test method covers the determination of the average density of a quantity of fine aggregate particles (not including the volume of voids between the particles), the relative density (specific gravity), and the absorption of the fine aggregate. Depending on the procedure used, the density, in kg/m3 (lb/ft3) is expressed as oven-dry (OD), saturated-surface-dry (SSD), or as apparent density. Likewise, relative density (specific gravity), a dimensionless quality, is expressed as OD, SSD, or as apparent relative density (apparent specific gravity). The OD density and OD relative density are determined after drying the aggregate. The SSD density, SSD relative density, and absorption are determined after soaking the aggregate in water for a prescribed duration.
1.2 This test method is used to determine the density of the essentially solid portion of a large number of aggregate particles and provides an average value representing the sample. Distinction is made between the density of aggregate particles as determined by this test method, and the bulk density of aggregates as determined by Test Method C 29/C 29M, which includes the volume of voids between the particles of aggregates.
1.3 This test method is not intended to be used for lightweight aggregates.
1.4 The values stated in SI units are to be regarded as the standard for conducting the tests. The test results for density shall be reported in either SI units or inch-pound units, as appropriate for the use to be made of the results.
1.5 The text of this test method references notes and footnotes which provide explanatory material. These notes and footnotes (excluding those in tables and figures) shall not be considered as requirements of this test method.
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.
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Designation: C128 – 07a
Standard Test Method for
Density, Relative Density (Specific Gravity), and Absorption
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of Fine Aggregate
This standard is issued under the fixed designation C128; 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* priate safety and health practices and determine the applica-
bility of regulatory limitations prior to use.
1.1 Thistestmethodcoversthedeterminationoftheaverage
density of a quantity of fine aggregate particles (not including
2. Referenced Documents
the volume of voids between the particles), the relative density
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2.1 ASTM Standards:
(specific gravity), and the absorption of the fine aggregate.
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C29/C29M Test Method for Bulk Density (“Unit Weight”)
Depending on the procedure used, the density, in kg/m (lb/ft )
and Voids in Aggregate
is expressed as oven-dry (OD), saturated-surface-dry (SSD), or
C70 Test Method for Surface Moisture in Fine Aggregate
as apparent density. Likewise, relative density (specific grav-
C117 TestMethodforMaterialsFinerthan75-µm(No.200)
ity), a dimensionless quality, is expressed as OD, SSD, or as
Sieve in Mineral Aggregates by Washing
apparent relative density (apparent specific gravity). The OD
C125 Terminology Relating to Concrete and Concrete Ag-
density and OD relative density are determined after drying the
gregates
aggregate. The SSD density, SSD relative density, and absorp-
C127 Test Method for Density, Relative Density (Specific
tion are determined after soaking the aggregate in water for a
Gravity), and Absorption of Coarse Aggregate
prescribed duration.
C188 Test Method for Density of Hydraulic Cement
1.2 This test method is used to determine the density of the
C566 Test Method for Total Evaporable Moisture Content
essentially solid portion of a large number of aggregate
of Aggregate by Drying
particles and provides an average value representing the
C670 Practice for Preparing Precision and Bias Statements
sample. Distinction is made between the density of aggregate
for Test Methods for Construction Materials
particles as determined by this test method, and the bulk
C702 Practice for Reducing Samples of Aggregate to Test-
density of aggregates as determined by Test Method C29/
ing Size
C29M, which includes the volume of voids between the
D75 Practice for Sampling Aggregates
particles of aggregates.
D854 Test Methods for Specific Gravity of Soil Solids by
1.3 This test method is not intended to be used for light-
Water Pycnometer
weight aggregates.
2.2 AASHTO Standard:
1.4 The values stated in SI units are to be regarded as the
AASHTONo.T84 SpecificGravityandAbsorptionofFine
standard for conducting the tests. The test results for density
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Aggregates
shall be reported in either SI units or inch-pound units, as
appropriate for the use to be made of the results.
3. Terminology
1.5 The text of this test method references notes and
3.1 Definitions:
footnotes which provide explanatory material. These notes and
3.1.1 absorption, n—the increase in mass of aggregate due
footnotes (excluding those in tables and figures) shall not be
to water penetrating into the pores of the particles, during a
considered as requirements of this test method.
prescribed period of time but not including water adhering to
1.6 This standard does not purport to address all of the
the outside surface of the particles, expressed as percentage of
safety concerns, if any, associated with its use. It is the
the dry mass.
responsibility of the user of this standard to establish appro-
2
For referenced ASTM standards, visit the ASTM website, www.astm.org, or
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This test method is under the jurisdiction of ASTM Committee C09 on contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM
Concrete and ConcreteAggregates and is the direct responsibility of Subcommittee Standards volume information, refer to the standard’s Document Summary page on
C09.20 on Normal Weight Aggregates. the ASTM website.
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Current edition approved Aug. 1, 2007. Published September 2007. Originally Available from American Association of State Highway and Transportation
approved in 1936. Last previous edition approved in 2007 as C128–07. DOI: Officials (AASHTO), 444 N. Capitol St., NW, Suite 249, Washington, DC 20001,
10.1520/C0128-07A. http://www.transportation.org.
*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.
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