6506-16 - PREPARATION FOR PAVING 1. Inspect subgrade for...

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1 PREPARATION FOR PAVING 1. Inspect subgrade for (B) Properly graded 2. Inspect subbase and base for (A) Uniformity in strength (B) Properly graded (C) Free of dust and debris 3. Application of prime coat on base course (A) Type and amount of asphalt used (i) Asphalt Institute SS-1, 1h or CSS-1, 1h at 0.1 to 0.3 gallons per square yard per inch of depth (0.5 to 1.4 liters/m 2 /25 mm) (ii) Florida Dept. of Transportation Diluted SS-1, 1h, CSS-1, 1h , special MS or RS (Application rate depends on type of base) (B) Method of application Spraying by an asphalt distributor ASPHALT DISTRIBUTOR SPRAY-BAR HEIGHT AND COVERAGE SPRAYING TEMPERATURES FOR PRIME AND TACK COATS (C) Requirements (i) Uniform spraying (ii) Asphalt emulsion must be completely absorbed into the base before the asphalt concrete surface course is placed. 4. Application of tack coat on existing asphalt concrete surface (before an asphalt overlay) (A) Type and amount of asphalt used (i) Asphalt Institute Diluted SS-1, 1h, CSS-1, 1h at 0.05 to 0.15 gallons/ yd 2 (0.25 to 0.70 liters/m 2 )
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2 (ii) Florida DOT RS-2, CRS-2, 2h, SS-1, 1h, CSS-1, 1h & special MS at 0.02 to 0.08 gallons/yd 2 (B) Method of Application Spraying by an asphalt distributor (C) Requirements (i) Uniform spraying (ii) Surface must be warm (> 80 °F (27 °C)) (iii) Proper spraying temperature 5. Placing leveling courses to correct grades (A) Leveling courses should be placed in horizontal layers. (B) Placed with motor grader.
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6506-16 - PREPARATION FOR PAVING 1. Inspect subgrade for...

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