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CITY OF EVERETT SPECIAL PROVISIONS <br /> <br />Beverly Lake Water Quality Retrofit Division 5 – SURFACE TREATMENTS August 2023 <br /> <br />AND PAVEMENTS <br />WO No. – UP3745 SP - 165 <br />0.02 and 0.10 gallons per square yard of retained asphalt. Obtain application rate <br />approval from Engineer. Apply a heavy application of tack coat to all joints. For <br />Roadways open to traffic, limit the application of tack coat to surfaces that will be <br />paved during the same working shift. Provide spreading equipment equipped with <br />a thermometer to indicate the temperature of the tack coat material. <br />Do NOT allow equipment to operate on tacked surfaces until the tack has broken <br />and cured. Repair tack coat if the Contractor’s operation damages the tack coat <br />prior to placement of the HMA. <br />Provide tack coat consisting of CSS-1 or CSS-1h emulsified asphalt. The CSS-1 <br />and CSS-1h emulsified asphalt may be diluted once with water at a rate not to <br />exceed one part water to one part emulsified asphalt. Provide tack coat having <br />sufficient temperature such that it may be applied uniformly at the specified rate of <br />application and not exceed the maximum temperature recommended by the <br />emulsified asphalt manufacturer. <br />5-04.3(4)A Crack Sealing <br />5-04.3(4)A1 General <br />When the Proposal includes a pay item for crack sealing, seal all cracks 1/4- <br />inch in width and greater. <br />Cleaning: Ensure that cracks are thoroughly clean, dry and free of all loose <br />and foreign material when filling with crack sealant material. Use a hot <br />compressed air lance to dry and warm the pavement surfaces within the crack <br />immediately prior to filling a crack with the sealant material. Do NOT overheat <br />pavement. Do NOT use direct flame dryers. Routing cracks is not required. <br />Sand Slurry: For cracks that are to be filled with sand slurry, thoroughly mix <br />the components and pour the mixture into the cracks until full. Add additional <br />CSS-1 cationic emulsified asphalt to the sand slurry as needed for workability <br />to ensure the mixture will completely fill the cracks. Strike off the sand slurry <br />flush with the existing pavement surface and allow the mixture to cure. Top off <br />cracks that were not completely filled with additional sand slurry. Do NOT place <br />the HMA overlay until the slurry has fully cured. <br />Provide sand slurry consisting of approximately 20 percent CSS-1 emulsified <br />asphalt, approximately 2 percent portland cement, water (if required), and the <br />remainder clean Class 1 or 2 fine aggregate per section 9-03.1(2). Thoroughly <br />mix components and then pour into the cracks and joints until full. The following <br />day, top off any cracks or joints that are not completely filled with additional <br />sand slurry. After the sand slurry is placed, strike off filler flush with the existing <br />pavement surface and allow to cure. Do NOT place the HMA overlay until the <br />slurry has fully cured. The requirements of Section 1-06 will not apply to the <br />portland cement and sand used in the sand slurry. <br />In areas where HMA will be placed, use sand slurry to fill the cracks. <br />In areas where HMA will not be placed, fill the cracks as follows: <br />a. Cracks 1/4- inch to 1 inch in width - fill with hot poured sealant. <br />b. Cracks greater than 1 inch in width – fill with sand slurry. <br /> <br />Hot Poured Sealant: For cracks that are to be filled with hot poured sealant, <br />apply the material in accordance with these requirements and the <br />manufacturer’s recommendations. Furnish a Type 1 Working Drawing of the <br />manufacturer’s product information and recommendations to the Engineer prior