This work consists of removing
existing asphalt concrete, brick, Portland cement concrete, or aggregate
pavement courses; shaping and compacting the exposed material; and placing new
asphalt concrete pavement or aggregate and asphalt concrete pavement courses.
The plans show details about
the repairs and replacement material.
The Engineer shall mark all
areas for removal. The pavement shall be
cut at the limits marked and removed.
Ensure that the pavement is removed to full-depth or to the depth shown
in the plans, and ensure adjacent pavement is not damaged during removal. If the adjacent pavement is damaged, remove
all loose pavement to full-depth or to the depth
specified in the plans.
Removed pavement shall be
disposed of in accordance with 202.02. The Inspector shall determine and document
where and how pavement is being disposed by the Contractor.
The exposed underlying
material must be shaped and compacted.
The asphalt material shall be as specified in the plans. Before placing asphalt concrete, all vertical
faces of the existing pavement must be cleaned and coated with asphalt material
according to 401.14. The replacement material must be placed in
appropriate lifts. Each lift must be
thoroughly and uniformly compacted using suitable compaction equipment. The final lift must be flush with the
existing pavement surface.
Compact the final lift using
a pneumatic tire roller that conforms to 401.13. The final lift should be compacted with at
least 18 passes over all points on the entire surface of the repair area. A pass is defined as one movement of the
roller over the surface of the patch. As
the rolling progresses, add additional patching material in order 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.
If an overlay is not
scheduled to be placed within 60 days of the repair, the perimeter of the
repair shall be trimmed vertically 1-1/2 inches deep from the surface before
placing the final lift of asphalt concrete.
If the Contract does not
include resurfacing, the perimeter surface of the repaired areas must be sealed
with a 4-inch (100 mm) wide band by applying approved 702.04
asphalt material, RS-1, RS-2, CRS-1, CRS-2, or 702.01
approved PG binder.
After completing repairs, the
existing shoulders must be repaired to the condition that existed prior to the
repair work.
1. Locate, mark, and record all areas to be repaired.
2. Document removal of deteriorated pavement. Note condition of existing adjacent pavement.
3. Document the disposal of removed pavement.
4. Document preparation of subgrade.
5. Document that the area was cleaned and tacked with 407
tack coat.
6. Document the placement and compaction (number of lifts
and compaction method) of approved 301
or 448
Type 2 asphalt or other as specified by plan.
7. Document the location of repairs, measurements, and
calculations, and pay per 253.05.
8. Show documentation on CA-D-6
or other approved form.