ITEM 251 PARTIAL DEPTH PAVEMENT REPAIR
251.01
Description
251.02 Removal
of Existing Pavement
251.03
Placement of Asphalt Concrete
251.04 Method
of Measurement
251.05 Basis of
Payment
251.01 Description. This work consists of partial
depth removal of existing pavement in areas exhibiting deterioration at the
surface, applying tack coat, and placing and compacting asphalt concrete.
251.02 Removal of Existing Pavement. The
Engineer will designate the location and limits of areas to be repaired.
Provide the Engineer with aerosol spray paint to outline those areas for
repair. Provide rectangular repair areas with dimensions as required to
envelop surface deterioration. Unless otherwise specified, extend repair
areas the full width of a traffic lane at transverse joints and along portions
of longitudinal joints. Remove pavement to the depth shown on the plans.
Remove
the pavement to the specified depth within the designated limits without
loosening or otherwise damaging adjacent pavement. Dispose of removed
pavement according to 202.
251.03 Placement of Asphalt Concrete. Apply 407.02 material to thoroughly coat the exposed surface and to fill
cracks and joint openings.
Place
and compact approved Item 448 asphalt concrete in
one or more lifts as necessary to finish flush with the adjacent pavement
surface.
Thoroughly
compact the final lift using a Type I pneumatic tire roller that conforms to 401.13. As the rolling progresses, add
additional patching material, as necessary, to produce a smooth surface flush
with the existing pavement surface.
Continuously
compact each lift while the material is in a workable condition throughout the
depth of the lift.
Trim
the limits of the repair to form a vertical face 1.5 inches (38 mm) deep from
the surface before placing the final asphalt concrete layer adjacent to the
existing pavement unless the repair is covered with an overlay within 60 days.
If
the Contract does not include resurfacing, seal the perimeter surface of the
repaired area by applying a nominal 4-inch (100 mm) wide strip of approved 702.04 asphalt material, RS-1, RS-2, CRS-1,
or CRS-2, or 702.01 approved PG binder.
251.04 Method of Measurement. The
Department will measure the quantity of Partial Depth Pavement Repair by the
number of square yards (square meters) or cubic yards (cubic meters) of
pavement repaired in the complete and accepted work, calculated using the
dimensions established by the Engineer.
251.05 Basis of Payment. Payment is full
compensation for furnishing all materials, including aerosol spray paint, tack
coat, asphalt concrete, seal coat, and cover aggregate and for all labor,
equipment, and incidentals necessary to complete this work.
The
Department will pay for accepted quantities at the contract price as follows:
Item
Unit
Description
251
Square
Yard
Partial Depth Pavement Repair
(Square Meter)
251
Cubic
Yard
Partial Depth Pavement Repair
(Cubic Meter)