laboratory, or by the Contractor, subject to approval. Sampling shall be
in accordance with ASTM D 75 for aggregates and ASTM D 140 for bituminous
material, unless otherwise directed. Perform aggregate gradation tests on
each sample in accordance with ASTM C 136. Perform all other aggregate
tests on the initial source samples and repeat tests when there is a change
of source. Perform sieve analyses daily from material samples. The tests
shall include an analysis of each gradation of material. Tests shall be
performed in sufficient number to insure that materials meet specified
requirements.
1.8.1
Wear Test
The wear test shall be performed in accordance with ASTM C 131 to ensure
that aggregates have a percentage of wear not exceeding 40 percent after
500 revolutions. One test shall be performed for every [_____] [metric
tons tons] [cubic meters cubic yards] of aggregates in stockpiles or at the
source.
1.8.2
Soundness Test
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NOTE: The magnesium-sulfate soundness test is to be
used in excluding aggregates known to be
unsatisfactory or for evaluating aggregates from new
sources. The maximum allowable percentage of loss
will be inserted in the blank and normally should be
within the range of 10 to 15 percent. The values
used will be based on knowledge of aggregates in the
area that have been previously approved or that have
a satisfactory service record in bituminous pavement
construction for at least 5 years and will assure
that aggregates from new sources will be equal to or
better than these aggregates.
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The soundness test shall be performed as specified by ASTM C 88 to ensure
that aggregates have a weight loss not greater than [_____] [12] percent
when subjected to five cycles of the magnesium sulfate test. One test
shall be performed for every [_____] [metric tons tons] [cubic meters cubic
yards] of aggregates in stockpiles or at the source.
1.8.3
Stripping Test
Stripping tests shall meet the requirements of AASHTO T 182.
Deleterious
substances shall not exceed the requirements of ASTM D 1139.
1.9
WEATHER LIMITATIONS
Bituminous surface treatment shall be applied only when the existing
surface or base course is dry or contains moisture not in excess of the
amount that will permit uniform distribution and the desired adhesion.
Bituminous surface treatment shall not be applied when either the
atmospheric temperature, in the shade, is below [10] [15.5] degrees C [50]
[60] degrees F or the pavement surface to be treated is below 20 degrees C
70 degrees F unless otherwise directed.
1.10
DELIVERY AND STORAGE
Inspect the materials delivered to the site for contamination and damage.
SECTION 02745
Page 10
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