to hauling to the jobsite.
3.1.3.3
Transportation of Bituminous Mixture
Transportation from the paving plant to the site shall be in trucks having
tight, clean, smooth beds lightly coated with an approved release agent to
prevent adhesion of mixture to truck bodies. Excessive release agent will
be drained prior to loading. Each load shall be covered with canvas or
other approved material of ample size to protect mixture from the weather
and to prevent loss of heat. Loads that have crusts of cold, unworkable
material or have become wet shall be rejected and discarded. The
Contracting Officer shall be notified immediately if excessive drainage of
the bituminous materials occurs. The cause of the excessive drainage shall
be determined, and the JMF adjusted, if necessary. Hauling over freshly
placed material will not be permitted.
3.1.3.4
Trial Test Section
At the start of plant operation, a quantity of mixture shall be prepared to
construct a test section at least 15 meters 50 feet long, two
spreader-widths wide and of the thickness to be used in the project.
Mixture shall be placed, spread, and rolled with the equipment to be used
in the project and in accordance with requirements specified. This test
section shall be tested and evaluated as a lot and shall conform to all
specified requirements. If test results are satisfactory, the test section
shall remain in place as part of the completed pavement. If tests indicate
that the pavement does not conform to specification requirements, necessary
adjustments to plant operations and laydown procedures shall be made
immediately, and additional test sections shall be constructed and sampled
for conformance with specification requirements. Test section will be
evaluated as specified in paragraph ACCEPTABILITY OF WORK. In no case
shall the Contractor start full production of a PFC mixture without
approval.
3.2
TACK COATING
Contact surfaces of underlying pavement, previously constructed PFC, curbs,
manholes, and other structures against which new material is to be placed,
shall be sprayed with a uniform light coat of bituminous material as
specified in Section 02748A BITUMINOUS TACK AND PRIME COATS. The amount of
bituminous tack coat to be applied shall be the minimum specified in
Section 02748A BITUMINOUS TACK AND PRIME COATS.
3.3
PLACING
PFC mixtures shall not be placed without ample time to complete spreading
and rolling during daylight hours, unless satisfactory approved artificial
lighting is provided.
3.3.1
Offsetting Joints
**************************************************************************
NOTE: Delete the first sentence when this
specification is used for a road pavement.
**************************************************************************
The PFC shall be placed so that longitudinal joints of the PFC will be
offset from joints in the existing pavement by at least 300 mm 1 foot.
Transverse joints in the PFC shall be offset by at least 600 mm 2 feet from
SECTION 02747
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