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ST. BARBARA CATHOLIC SCHOOL TASK 2 75-24272-01 <br />DIOCESE OF ORANGE SEPTEMBER 12TH, 2024 <br />SANTA ANA, CA BID & PERMIT SET <br /> <br />CONCRETE PAVING 321313 - 12 <br />I. Apply integral wood float and broom finish to the all concrete pavements and walkways, <br />unless otherwise shown on the Drawings. <br />1. After screeding and compacting, finish with a wood float using a circular motion to <br />produce a uniform texture and finish throughout. <br />2. For vehicular traffic areas, the finish shall be coarse enough to provide a non-slip <br />surface with a minimum static friction coefficient of 0.6. <br />3. For pedestrian traffic areas, finish shall be a non-slip surface with a minimum static <br />coefficient of friction of 0.6. <br />a. For ramps, the static coefficient of friction shall be a minimum of 0.8. Ramps <br />are defined as any sloping path of travel with a slope in the direction of travel of <br />5.0%, or greater. <br />4. Tests for coefficient of friction shall be either ASTM C-1028 (field test) or ASTM D- <br />2047 (laboratory test). <br /> <br />3.7 CONCRETE PROTECTION AND CURING <br /> <br />A. General: Protect freshly placed concrete from premature drying and excessive cold or hot <br />temperatures. Comply with the recommendations of ACI 306R for cold weather protection <br />and ACI 305R for hot weather protection during curing. <br /> <br />B. Evaporation Control: In hot, dry, and windy weather, protect concrete from rapid moisture <br />loss before and during finishing operations with an evaporation-control material. Apply <br />according to manufacturer's instructions after screeding and bull floating, but before floating. <br /> <br />C. Begin curing after finishing concrete but not before free water has disappeared from concrete <br />surface. <br /> <br />D. Curing Methods: Cure concrete by moisture curing, moisture-retaining-cover curing, curing <br />compound, or a combination of these as follows: <br />1. Moisture Curing: Keep surfaces continuously moist for not less than 7 days with the <br />following materials: <br />a. Water. <br />b. Continuous water-fog spray. <br />c. Absorptive cover, water saturated, and kept continuously wet. Cover concrete <br />surfaces and edges with a 12-inch lap over adjacent absorptive covers. <br />2. Moisture-Retaining-Cover Curing: Cover concrete surfaces with moisture-retaining <br />cover for curing concrete, placed in widest practicable width, with sides and ends <br />lapped at least 12 inches, and sealed by waterproof tape or adhesive. Immediately <br />repair any holes or tears during curing period using cover material and waterproof tape. <br />3. Curing Compound: Apply uniformly in continuous operation by power spray or roller <br />according to manufacturer's directions. Recoat areas subjected to heavy rainfall within <br />3 hours after initial application. Maintain continuity of coating and repair damage <br />during curing period. <br /> <br />E. Spray-apply concrete sealer to all concrete pavement. Comply with sealer manufacturer's <br />application instructions. <br /> <br />3.8 CURING COLORED CONCRETE <br />A. Colored concrete shall not, under any circumstances, be cured using water fog misting or <br />ponding, burlap, plastic sheeting, or other wet covering.