2.1.5
Aggregates
**************************************************************************
NOTE: See the concrete materials design memorandum
to select the aggregate composition options.
**************************************************************************
2.1.5.1
Aggregate Composition
Fine aggregate shall consist of natural sand, manufactured sand, or a
combination of natural and manufactured sands. Coarse aggregate shall
consist of gravel, crushed gravel, crushed stone, air-cooled blast-furnace
slag, or a combination thereof.
2.1.5.2
Quality
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NOTES: The tests selected should be those which are
applicable to the concrete to be used in the
project. These tests may include those in the
following list in addition to others not listed.
See EM 1110-2-2000 for schedule of tests.
A list of properties and test values are unique to
each project and should be taken from the concrete
materials design memorandum. Delete the quality
tests not required in the design memorandum.
The petrographic examination shall be used to
identify deleterious substances in aggregates.
Deleterious substances shall be listed individually
with respective limits.
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Aggregates delivered to the mixer shall meet the following requirements:
TEST LIMITS
PROPERTY
FINE AGGREGATE
COARSE AGGREGATE
TESTS
[Specific Gravity
[_____]
[_____]
ASTM C 127
ASTM C 128]
[Absorption
[_____]
[_____]
ASTM C 127
ASTM C 128]
[Durability Factor
[_____]
[_____]
COE CRD-C 114
using, (Procedure A)
ASTM C 666/C 666M]
[Clay Lumps and
[_____]
[_____]
ASTM C 142]
Friable Particles
[Material Finer
[_____]
[_____]
ASTM C 117]
than 75-m
(No. 200) Sieve
[Organic
No. 3 max. Not
ASTM C 40
less than 95 Percent
ASTM C 87]
Test Limits
SECTION 03700
Page 38
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