Astm C 127 Pdf Free Download
Designation: C 127 – 88 (Reapproved 1993)
e1
Standard Test Method for
Specific Gravity and Absorption of Coarse Aggregate
1
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 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.
e
1
NOTE —Keywords were added in December 1993.
1. Scope
1.1 This test method covers the determination of specific
gravity and absorption of coarse aggregate. The specific
gravity may be expressed as bulk specific gravity, bulk specific
gravity (SSD) (saturated-surface-dry), or apparent specific
gravity. The bulk specific gravity (SSD) and absorption are
based on aggregate after 24 h soaking in water. This test
method is not intended to be used with lightweight aggregates.
1.2 The values stated in SI units are to be regarded as the
standard.
1.3 This standard does not purport to address all of the
safety problems, if any, associated with its use. It is the
responsibility of the user of this standard to establish appro-
priate safety and health practices and determine the applica-
bility of regulatory limitations prior to use.
2. Referenced Documents
2.1 ASTM Standards:
C 29/C 29M Test Method for Unit Weight and Voids in
Aggregate
2
C 125 Terminology Relating to Concrete and Concrete
Aggregates
2
C 128 Test Method for Specific Gravity and Absorption of
Fine Aggregate
2
C 136 Test Method for Sieve Analysis of Fine and Coarse
Aggregates
2
C 566 Test Method for Total Moisture Content of Aggregate
by Drying
2
C 670 Practice for Preparing Precision and Bias Statements
for Test Methods for Construction Materials
2
C 702 Practice for Reducing Field Samples of Aggregate to
Testing Size
2
D 75 Practice for Sampling Aggregates
3
D 448 Classification for Sizes of Aggregate for Road and
Bridge Construction
3
E 11 Specification for Wire-Cloth Sieves for Testing Pur-
poses
4
E 12 Terminology Relating to Density and Specific Gravity
of Solids, Liquids, and Gases
5
2.2 AASHTO Standard:
AASHTO No. T 85 Specific Gravity and Absorption of
Coarse Aggregate
6
3. Terminology
3.1 Definitions:
3.1.1 absorption —the increase in the weight of aggregate
due to water in the pores of the material, but not including
water adhering to the outside surface of the particles, expressed
as a percentage of the dry weight. The aggregate is considered
"dry" when it has been maintained at a temperature of 110 6
5°C for sufficient time to remove all uncombined water.
3.1.2 specific gravity —the ratio of the mass (or weight in
air) of a unit volume of a material to the mass of the same
volume of water at stated temperatures. Values are dimension-
less.
3.1.2.1 apparent specific gravity—the ratio of the weight in
air of a unit volume of the impermeable portion of aggregate at
a stated temperature to the weight in air of an equal volume of
gas-free distilled water at a stated temperature.
3.1.2.2 bulk specific gravity —the ratio of the weight in air
of a unit volume of aggregate (including the permeable and
impermeable voids in the particles, but not including the voids
between particles) at a stated temperature to the weight in air
of an equal volume of gas-free distilled water at a stated
temperature.
3.1.2.3 bulk specific gravity (SSD) —the ratio of the weight
in air of a unit volume of aggregate, including the weight of
water within the voids filled to the extent achieved by
submerging in water for approximately 24 h (but not including
the voids between particles) at a stated temperature, compared
to the weight in air of an equal volume of gas-free distilled
water at a stated temperature.
NOTE 1—The terminology for specific gravity is based on terms in
1
This test method is under the jurisdiction of ASTM Committee C-9 on Concrete
and Concrete Aggregates and is the direct responsibility of Subcommittee C09.20 on
Normal Weight Aggregates.
Current edition approved Oct. 31, 1988. Published December 1988. Originally
published as C 127 – 36 T. Last previous edition C 127 – 84.
2
Annual Book of ASTM Standards, Vol 04.02.
3
Annual Book of ASTM Standards, Vol 04.03.
4
Annual Book of ASTM Standards, Vol 14.02.
5
Annual Book of ASTM Standards, Vol 15.05.
6
Available from American Association of State Highway and Transportation
Officials, 444 North Capitol St. N.W., Suite 225, Washington, DC 20001.
1
Copyright © ASTM, 100 Barr Harbor Drive, West Conshohocken, PA 19428-2959, United States.
Source: https://www.studocu.com/row/document/international-islamic-university-islamabad/civil-engineering-materials-lab/standard-test-method-for-specific-gravity-astm-c127/8143824
Post a Comment for "Astm C 127 Pdf Free Download"