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DocuSign Envelope ID: 313DA256 -1EDE- 4396- A716- 4C53B809027E <br />JERRY M. PASSMORE CENTER ADDITION AND RENOVATION <br />HILLSBOROUGH, NORTH CAROLINA <br />2. Use emulsified- asphalt slurry to seal cracks and joints less than <br />Fill flush with surface of existing pavement and remove excess. <br />3. Use hot - applied joint sealant to seal cracks and joints more than <br />Fill flush with surface of existing pavement and remove excess. <br />3.5 SURFACE PREPARATION <br />1/4 inch (6 mm) wide. <br />1/4 inch (6 mm) wide. <br />A. General: Immediately before placing asphalt materials, remove loose and deleterious material <br />from substrate surfaces. Ensure that prepared subgrade is ready to receive paving. <br />B. Herbicide Treatment: Apply herbicide according to manufacturer's recommended rates and <br />written application instructions. Apply to dry, prepared subgrade or surface of compacted - <br />aggregate base before applying paving materials. <br />Mix herbicide with prime coat if formulated by manufacturer for that purpose. <br />C. Prime Coat: Apply uniformly over surface of compacted unbound - aggregate base course at a <br />rate of 0.15 to 0.50 gal. /sq. yd. (0.7 to 2.3 L /sq. m). Apply enough material to penetrate and <br />seal but not flood surface. Allow prime coat to cure. <br />1. If prime coat is not entirely absorbed within 24 hours after application, spread sand over <br />surface to blot excess asphalt. Use enough sand to prevent pickup under traffic. Remove <br />loose sand by sweeping before pavement is placed and after volatiles have evaporated. <br />2. Protect primed substrate from damage until ready to receive paving. <br />D. Tack Coat: Apply uniformly to surfaces of existing pavement at a rate of 0.05 to 0.15 gal. /sq. <br />yd. (0.2 to 0.7 L /sq. m). <br />1. Allow tack coat to cure undisturbed before applying hot -mix asphalt paving. <br />2. Avoid smearing or staining adjoining surfaces, appurtenances, and surroundings. <br />Remove spillages and clean affected surfaces. <br />3.6 HOT -MIX ASPHALT PLACING <br />A. Machine place hot -mix asphalt on prepared surface, spread uniformly, and strike off. Place <br />asphalt mix by hand to areas inaccessible to equipment in a manner that prevents segregation of <br />mix. Place each course to required grade, cross section, and thickness when compacted. <br />1. Place hot -mix asphalt base course in number of lifts and thicknesses indicated. <br />2. Place hot -mix asphalt surface course in single lift. <br />3. Spread mix at minimum temperature of 250 deg F (121 deg Q. <br />4. Begin applying mix along centerline of crown for crowned sections and on high side of <br />one -way slopes unless otherwise indicated. <br />5. Regulate paver machine speed to obtain smooth, continuous surface free of pulls and <br />tears in asphalt - paving mat. <br />ASPHALT PAVING 321216-6 <br />