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INDIAN RIVER COUNTY JULY 25, 2014 <br />INTERGENERATIONAL RECREATION CENTER 100% CONSTRUCTION DOCUMENTS <br />1. Cement Binder: ASTM C 150, portland cement or hydraulic or blended hydraulic cement <br />as defined in ASTM C 219. <br />2. Primer: Product of underlayment manufacturer recommended for substrate, conditions, <br />and application. <br />3. Aggregate: Well -graded, washed gravel, 1/8 to 1/4 inch or coarse sand as recommended <br />by underlayment manufacturer. <br />4. Compressive Strength: Not less than 5100 psi at 28 days when tested according to <br />ASTM C 109/C 109M. <br />B. Repair Overlayment: Cement -based, polymer -modified, self -leveling product that can be <br />applied in thicknesses from 1/4 inch and that can be filled in over a scarified surface to match <br />adjacent floor elevations. <br />1. Cement Binder: ASTM C 150, portland cement or hydraulic or blended hydraulic cement <br />as defined in ASTM C 219. <br />2. Primer: Product of topping manufacturer recommended for substrate, conditions, and <br />application. <br />3. Aggregate: Well -graded, washed gravel, 1/8 to 1/4 inch or coarse sand as recommended <br />by topping manufacturer. <br />4. Compressive Strength: Not less than 5000 psi at 28 days when tested according to <br />ASTM C 109/C 109M. <br />2.11 CONCRETE MIXTURES, GENERAL <br />A. Cementitious Materials: Limit percentage, by weight, of cementitious materials other than <br />portland cement in concrete as follows: <br />1. Fly Ash: 25 percent. <br />2. Combined Fly Ash and Pozzolan: 25 percent. <br />3. Combined Fly Ash or Pozzolan and Ground Granulated Blast -Furnace Slag: 50 percent <br />portland cement minimum, with fly ash or pozzolan not exceeding 25 percent. <br />Limit water-soluble, chloride -ion content in hardened concrete to 0.30 percent by weight of <br />cement. <br />C. Admixtures: Use admixtures according to manufacturer's written instructions. <br />1. Use water -reducing, high -range water -reducing or plasticizing admixture in concrete, as <br />required, for placement and workability. <br />2. Use water -reducing and retarding admixture when required by high temperatures, low <br />humidity, or other adverse placement conditions. <br />3. Use water -reducing admixture in pumped concrete, concrete for heavy -use industrial <br />slabs and parking structure slabs, concrete required to be watertight, and concrete with a <br />water-cementitious materials ratio below 0.50. <br />4. Use corrosion -inhibiting admixture in concrete mixtures where indicated. <br />D. 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 />2.12 CONCRETE MIXTURES FOR BUILDING ELEMENTS <br />A. Footings: Proportion normal -weight concrete mixture as follows: <br />CAST -IN-PLACE CONCRETE 033000 - 9 <br />