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<br />High Rock Road Waste and Recycling Center Improvements 32 12 16 - 4 <br />Orange County, North Carolina JULY 2021 <br />DAA PN: R00592-213N <br /> <br />1. Pump hot undersealing asphalt under rocking slabs until slab is stabilized or, if <br />necessary, crack slab into pieces and roll to reseat pieces firmly. <br />2. Remove disintegrated or badly broken pavement. Prepare and patch with hot -mix <br />asphalt. <br />C. Leveling Course: Install and compact leveling course consisting of dense -graded, hot- <br />mix asphalt surface course to level sags and fill depressions deeper than 1 inch in <br />existing pavements. <br />1. Install leveling wedges in compacted lifts not exceeding 3 inches thick. <br />D. Crack and Joint Filling: Remove existing filler material from cracks or joints to a depth <br />of 1/4 inch. Refill with asphalt joint-filling material to restore watertight condition. <br />Remove excess filler that has accumulated near cracks or joints. <br />E. Tack Coat: Apply uniformly to existing surfaces of previously constructed asphalt or <br />portland cement concrete paving and to surfaces a butting or projecting into new, hot- <br />mix asphalt pavement. Apply at a uniform rate of 0.05 to 0.15 gal./sq. yd. of surface. <br />1. Allow tack coat to cure undisturbed before paving. <br />2. Avoid smearing or staining adjoining surfaces, appurtenances, and surroundings. <br />Remove spillages and clean affected surfaces. <br />3.4 SURFACE PREPARATION <br />A. General: Immediately before placing asphalt materials, remove loose and deleterious <br />material from substrate surfaces. Ensure that prepared subgrade is ready to receive <br />paving. <br />1. Sweep loose granular particles from surface of unbound-aggregate base course. <br />Do not dislodge or disturb aggregate embedded in compacted surface of base <br />course. <br />3.5 HOT-MIX ASPHALT PLACING <br />A. Machine place hot-mix asphalt mix on prepared surface, spread uniformly, and strike <br />off. Place asphalt mix by hand to areas inaccessible to equipment in a manner that <br />prevents segregation of mix. Place each course to required grade, cross section, and <br />thickness, when compacted. <br />1. Spread mix at minimum temperature of 250 deg F. <br />2. Begin applying mix along centerline of crown for crowned sections and on high <br />side of one-way slopes, unless otherwise indicated. <br />3. Regulate paver machine speed to obtain smooth, continuous surface free of pulls <br />and tears in asphalt-paving mat. <br />B. Place paving in consecutive strips not less than 10 feet wide, except where infill edge <br />strips of a lesser width are required. <br />1. After first strip has been placed and rolled, place succeeding strips and extend <br />rolling to overlap previous strips. Complete asphalt base course for a sectio n <br />before placing asphalt surface course. <br />C. Promptly correct surface irregularities in paving course behind paver. Use suitable <br />hand tools to remove excess material forming high spots. Fill depressions with hot -mix <br />asphalt to prevent segregation of mix; use suitable hand tools to smooth surface. <br />DocuSign Envelope ID: BBF56E0A-3618-497E-AA70-92F097E8F598