(Asphalt Concrete)
Article 1 — Description
Clean and seal joints and cracks in asphalt concrete roadway surfaces .
Article 2 — Materials
Furnish materials unless otherwise shown on the plans. Furnish sealant materials as shown on the plans in accordance with Item 300, “Asphalts, Oils, and Emulsions.” Furnish fine aggregate in accordance with Section 341 .2.1.3., “Fine Aggregate.”
Article 3 — Equipment
Furnish equipment, tools, and machinery for proper execution of the work.
3.1 Hot-Applied Sealants. Heat in a double- jacketed heater using a heat transfer oil so no direct flame contact s
the shell of the vessel containing the sealing compound. Provide a heater capable of circulating and agitating the sealant during the heating process to achieve a uniform temperature rise and maintain the desired temperature. Provide gauges to monitor the temperature of the vessel contents and avoid overheating the material. Provide a heater equipped with a gear -driven asphalt pump with adequate pressure to dispense the sealant.
3.2 Cold -Applied Sealants. Provide equipment with adequate pressure to dispense the sealant in a continuous
flow.
Article 4 — Work Methods
Apply material when the air or pavement temperature is within the manufacturer’s recommendations or as approved. Clean and seal joints and cracks that are 1/8 in. or greater in width using Department -approved materials. Fill cracks greater than 1/2 in. with dry sand or as shown on the plans. For cracks 1/8–1- 1/2 in. in width, fill with standard crack sealant in conformance with the manufacturer ’s recommendations or as approved for optimal crack penetration. For cracks wider than 1- 1/2 in. , fill with material meeting the requirements of Item 721, “Fiber Reinforced Polymer Patching Material .” The installation method will be as shown on the plans. Rout joints and cracks to the configuration shown on the plans when required. Clean joints and cracks using air blast cleaning or other acceptable methods to a depth at least twice the joint or crack width. Joints and cracks must be free of moisture before sealing. Dispose of materials removed as directed or approved. Apply sealing material using a pressure nozzle. Completely fill cracks and joints. Squeegee material to no more than 3 in. wide and 1/8 in. above the pavement surface. Prevent tracking with an application of fine aggregate as directed.
Article 5 — Measurement
This Item will be measured by the foot, gallon, pound, or lane mile. Shoulders wider than 6 ft. are considered additional lanes . 968 6. PAYMENT The work performed and materials furnished in accordance with this Item and measured as provided under “Measurement” will be paid for at the unit price bid for “Joint and Crack Sealing” of the sealant material specified and “Joint and Crack Routing and Sealing” of the sealant material specified. This price is full compensation for routing, cleaning, and sealing joints and cracks; furnishing and placing materials; and equipm ent, labor, tools, and incidentals. If measurement is by the lane mile, shoulders 6 ft. or narrower will not be paid for directly but will be subsidiary to work on the adjacent travel lane