Article 1 — Description
Prepare and treat existing or newly constructed surface with an asphalt binder or other specialty prime coat binder material. Apply blotter material as required.
Article 2 — Materials
2.1 Binder . Use material of the type and grade shown on the plans in accordance with Item 300, “Asphalts, Oils,
and Emulsions .”
2.2 Blotter . Use either base course sweepings obtained from cleaning the base or native sand as blotter
materials unless otherwise shown on the plans or approved.
Article 3 — Equipment
Provide applicable equipment in accordance with Article 316.3., “Equipment.”
Article 4 — Construction
4.1 General . Apply the mixture when the air temperature is at or above 60°F, or above 50°F and rising. Measure
the air temperature in the shade away from artificial heat. The Engineer will determine when weather conditions are suitable for application. Do not permit traffic, hauling, or placement of subsequent courses over freshly constructed prime coats. Maintain the primed surface until placement of subsequent courses or acceptance of the work.
4.2 Surface Preparation . Prepare the surface by sweeping or other approved methods. Lightly sprinkle the
surface with water before applying bituminous material, when directed, to control dust and ensure absorption.
4.3 Application .
4.3.1 Binder . The Engineer will select the application temperature within the limits recommended in Item 300, or
by the material manufacturer. Apply material within 15°F of the selected temperature, but do not exceed the maximum allowable temperature. Distribute the material smoothly and evenly at the rate selected by the Engineer. Roll the freshly applied prime coat using a pneumatic -tire roller to ensure penetration when directed.
4.3.2 Blotter . Spread blotter material before allowing traffic to use a primed surface. Apply blotter material to
primed surface at the specified rate when “Prime Coat and Blotter” is shown on the plans as a bid item or as directed. Apply blotter to spot locations when “Prime Coat” is shown on the plans as a bid item or as directed to accommodate traffic movement through the work area. Remove blotter material before placing the surface. Dispose of blotter material in conformance with applicable state and federal requirements.
Article 5 — Measurement
This Item will be measured by the gallon of binder placed and accepted. 248 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 “Prime Coat” or “Prime Coat and Blotter” of the type and grade of binder specified. This price is full compensation for cleaning and sprinkling the area to be primed; materials, including blotter material; and rolling, equipment, labor, tools, and incidentals.