longer period if so directed. As a construction expedient in paving
intermediate lanes between newly paved pilot lanes, operation of the
hauling equipment will be permitted on the new pavement after the pavement
has been cured for 7 days and the joints have been sealed or otherwise
protected. Also, the subgrade planer, concrete paving and finishing
machines, and similar equipment may be permitted to ride upon the edges of
previously constructed slabs when the concrete has attained a minimum field
cured flexural strength of 3.6 MPa 550 psi and approved means are furnished
to prevent damage to the slab edge. All new and existing pavement carrying
construction traffic or equipment shall be continuously kept completely
clean, and spillage of concrete or other materials shall be cleaned up
immediately upon occurrence. Special care shall be used where Contractor's
traffic uses or crosses active airfield pavement. Other existing pavements
used by the Contractor shall be power broomed at least daily when traffic
operates. For fill-in lanes, equipment shall be used that will not damage
or spall the edges or joints of the previously constructed pavement.
3.12
TESTING AND INSPECTION FOR CONTRACTOR QUALITY CONTROL
3.12.1
Testing and Inspection by Contractor
During construction, the Contractor shall be responsible for sampling and
testing aggregates, cementitious materials (cement, GGBF and pozzolan), and
concrete to determine compliance with the specifications. The Contractor
shall provide facilities and labor as may be necessary for procurement of
representative test samples. The Contractor shall furnish sampling
platforms and belt templates to obtain representative samples of aggregates
from charging belts at the concrete plant. Samples of concrete shall be
obtained at the point of delivery to the paver. Testing by the Government
will in no way relieve the Contractor of the specified testing
requirements. The Contractor shall perform the inspection and tests
described below, and based upon the results of these inspections and tests,
shall take the action required and submit reports as required. This
testing shall be performed by the Contractor regardless of any other
testing performed by the Government, either for pay adjustment purposes or
for any other reason.
3.12.2
Testing and Inspection Requirements
Contractor CQC sampling, testing, inspection and reporting shall be in
accordance with the following Table.
TABLE 6
CONTRACTOR TESTING AND INSPECTION REQUIREMENTS
Test Method
Control Limit/Corrective Action
Fine Aggregate Gradation and Fineness Modulus
2 per lot
ASTM C 136
9 of 10 tests vary <0.15 from average
sample at belt
Outside limits on any sieve-retest
2nd failure-stop, repair, retest
2 per lot
ASTM C 136
Outside limits on any sieve-retest
sample at belt
2nd failure-report to COR, correct
2 consecutive avgs of 5 tests out-
report to COR, stop ops, repair, retest
SECTION 02753
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