ITEM 251 PARTIAL DEPTH PAVEMENT REPAIR
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. Construct rectangular repair areas with dimensions as required to envelop surface deterioration. Unless otherwise specified, extend repair areas the full width of a traffic lane. 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. Trim the limits of the repair to form a vertical face 1.5 inches (38 mm) deep from the surface unless the repair is covered with an overlay within 60 days.
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 asphalt concrete meeting the design requirements of the item shown in the pay item description in one or more lifts as necessary to finish flush with the adjacent pavement surface. Place surface course mixes at a maximum 2 inch ( 50 mm) lift thickness and intermediate courses at a maximum 3 inch (75 mm) lift thickness. Thoroughly compact the final lift using a Type I pneumatic tire roller conforming to 449.02. As the rolling progresses, add additional asphalt concrete, as necessary, to produce a smooth surface flush with the adjacent pavement surface. Continuously compact each lift while the material is in a workable condition throughout the depth of the lift. Ensure that each lift is thoroughly compacted to a suitable density that will not result in displacement under traffic. If the Contract does not include resurfacing, seal the perimeter surface of the repaired area by applying a 2 to 4 inch (50 to 100 mm) wide strip of approved 705.04 material or
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