Contractor proposes to furnish aggregates from a source or from sources
not listed at the end of this section, he may designate only a single
source or single combination of sources for aggregates. Regardless of
the source, selected samples for acceptance testing shall be provided
as required by paragraph GOVERNMENT TESTING AND SAMPLING. If a source
for coarse or fine aggregates so designated by the Contractor does not
meet the quality requirements stated in paragraph QUALITY, the
Contractor may not submit for approval other nonlisted sources but
shall furnish the coarse or fine aggregate, as the case may be, from
sources listed at the end of this section at no additional cost to the
Government.
2.1.2.3
Quality
**************************************************************************
NOTES: The tests selected should be those which are
applicable to the concrete to be used in the
project. These tests may include those listed below
in addition to others not listed. See EM
1110-2-2000 for schedule of tests.
Depending upon the quality of aggregates available,
some tests may not be required. Refer to EM
1110-2-2000 for the purpose of each test.
A list of properties and test values are unique to
each project and should be taken from the concrete
materials DM. Delete the quality tests not required
in the DM.
The petrographic examination shall be used to
identify deleterious substances in aggregates.
Deleterious substances shall be listed individually
with respective limits.
In selecting deleterious substances, it should be
borne in mind that cutoff walls are to be treated
as structures not exposed to weather.
**************************************************************************
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
Clay Lumps and
[_____]
[_____]
ASTM C 142
Friable Particles
Material Finer
[_____]
[_____]
ASTM C 117
than 75-m
(No. 200) Sieve
SECTION 03373
Page 15
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