Astm c127-07

Designation: C 127 – 07

Standard Test Method for

Density, Relative Density (Specific Gravity), and Absorption
of Coarse Aggregate1
This standard is issued under the fixed designation C 127; 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 lastreapproval. 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.

responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use.

1. Scope*
1.1 This test method coversthe determination of the average
density of a quantity of coarse aggregate particles (not including the volume of voids between the particles), the relative
density (specific gravity), and the absorption of the coarse
aggregate. Depending on the procedure used, the density
(kg/m3(lb/ft3)) is expressed as oven-dry (OD), saturatedsurface-dry (SSD), or as apparent density. Likewise, relativedensity (specific gravity), a dimensionless quantity, 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 thedensity 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 Thistest method is not intended to be used with
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 explanatorymaterial. These notes and
footnotes (excluding those in tables and figures) shall not be
considered as requirements of this test method.
1.6 This standard does not purport to address all of the
safety concerns, if any, associated with its use. It is the
--``,`,,`,,``,`,,,,```,```,`,,`-`-`,,`,,`,`,,`---

2. Referenced Documents
2.1 ASTM Standards: 2
C 29/C 29M Test Method for Bulk Density(“Unit Weight”)
and Voids in Aggregate
C 125 Terminology Relating to Concrete and Concrete
Aggregates
C 128 Test Method for Density, Relative Density (Specific
Gravity), and Absorption of Fine Aggregate
C 136 Test Method for Sieve Analysis of Fine and Coarse
Aggregates
C 566 Test Method for Total Evaporable Moisture Content
of Aggregate by Drying
C 670 Practice for Preparing Precision andBias Statements
for Test Methods for Construction Materials
C 702 Practice for Reducing Samples of Aggregate to
Testing Size
D 75 Practice for Sampling Aggregates
D 448 Classification for Sizes of Aggregate for Road and
Bridge Construction
E 11 Specification for Wire Cloth and Sieves for Testing
Purposes
2.2 AASHTO Standard:
AASHTO No. T 85 Specific Gravity and Absorption of
CoarseAggregate3
3. Terminology
3.1 Definitions:
3.1.1 absorption, n—the increase in mass of aggregate due
to water penetration into the pores of the particles during a
2
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
Standards volume information, refer to the standard’s Document Summary page on
the...