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DocuSign Envelope ID: 313DA256 -1EDE- 4396- A716- 4C53B809027E <br />JERRY M. PASSMORE CENTER ADDITION AND RENOVATION <br />HILLSBOROUGH, NORTH CAROLINA <br />1. Fly Ash or Pozzolan: 25 percent. <br />2. Ground Granulated Blast- Furnace Slag: 50 percent. <br />3. Combined Fly Ash or Pozzolan, and Ground Granulated Blast- Furnace Slag: 50 percent, <br />with fly ash or pozzolan not exceeding 25 percent. <br />F. Color Pigment: Add color pigment to concrete mixture according to manufacturer's written <br />instructions and to result in hardened concrete color consistent with approved mockup. <br />2.7 CONCRETE MIXING <br />A. Ready -Mixed Concrete: Measure, batch, and mix concrete materials and concrete according to <br />ASTM C 94/C 94M and ASTM C 1116 /C 1116M. Furnish batch certificates for each batch <br />discharged and used in the Work. <br />When air temperature is between 85 and 90 deg F (30 and 32 deg C), reduce mixing and <br />delivery time from 1 -1/2 hours to 75 minutes; when air temperature is above 90 deg F (32 <br />deg C), reduce mixing and delivery time to 60 minutes. <br />PART 3 - EXECUTION <br />A. Examine exposed subgrades and subbase surfaces for compliance with requirements for <br />dimensional, grading, and elevation tolerances. <br />B. Proof -roll prepared subbase surface below concrete paving to identify soft pockets and areas of <br />excess yielding. Proof roll shall be monitored by the owner's geotechnical representative. <br />C. Proceed with installation only after unsatisfactory conditions have been corrected. <br />3.2 PREPARATION <br />A. Remove loose material from compacted subbase surface immediately before placing concrete. <br />3.3 EDGE FORMS AND SCREED CONSTRUCTION <br />A. Set, brace, and secure edge forms, bulkheads, and intermediate screed guides to required lines, <br />grades, and elevations. Install forms to allow continuous progress of work and so forms can <br />remain in place at least 24 hours after concrete placement. <br />B. Clean forms after each use and coat with form- release agent to ensure separation from concrete <br />without damage. <br />CONCRETE PAVING 321313-6 <br />