469ASPHALT JOINT AND CRACK SEALING

469.1DESCRIPTION—This work is the cleaning and sealing of longitudinal and transverse joints and random

cracks in existing pavement surfaces.

469.2MATERIAL—

469.3CONSTRUCTION—

pouring temperatures found on the label on the manufacturer's shipping container. Place the material according to the manufacturer’s recommendations. Do not maintain batches of material at the pouring temperature for more than 6 hours. Reheat according to the manufacturer's recommendations.

pavement surfaces. If required, rout cracks to create a reservoir 1/2 inch deep. Clean the pavement for 4 inches to 6 inches on either side of the joint or crack. Immediately before sealing, use a compressed air stream of at least 100 pounds per square inch measured at the source, or a hot compressed air lance to clean and dry damp cracks in asphalt pavements. If using the hot compressed air lance, do not damage the surrounding pavement area from overheating. Clean, dry, and remove debris and loose material from cracks, joints, and adjacent pavement surfaces.

cracks over 1 inch wide with Asphalt Wearing Course 4.75 mm. If using asphalt sealant, fill prepared joints and cracks level with the pavement surface. Wipe the sealant flush with the pavement surface, leaving a thin film of sealant from 1/32 inch to 1/16 inch thick and from 1 inch to 3 inches wide. After wiping the joint or crack, remove and dispose of excess sealant. Unless allowed with written approval by the Department, do not place sealant when the air temperature is below 40F or above 90F.

469.4MEASUREMENT AND PAYMENT—

For the type specified.