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INDIAN RIVER COUNTY JULY 25, 2014 <br />INTERGENERATIONAL RECREATION CENTER 100% CONSTRUCTION DOCUMENTS <br />before proceeding with patching. Compact mortar in place and strike off slightly higher <br />than surrounding surface. <br />3. Repair defects on concealed formed surfaces that affect concrete's durability and <br />structural performance as determined by Architect. <br />D. Repairing Unformed Surfaces: Test unformed surfaces, such as floors and slabs, for finish and <br />verify surface tolerances specified for each surface. Correct low and high areas. Test surfaces <br />sloped to drain for trueness of slope and smoothness; use a sloped template. <br />1. Repair finished surfaces containing defects. Surface defects include spalls, popouts, <br />honeycombs, rock pockets, crazing and cracks in excess of 0.01 inch wide or that <br />penetrate to reinforcement or completely through unreinforced sections regardless of <br />width, and other objectionable conditions. <br />2. After concrete has cured at least 14 days, correct high areas by grinding. <br />3. Correct localized low areas during or immediately after completing surface finishing <br />operations by cutting out low areas and replacing with patching mortar. Finish repaired <br />areas to blend into adjacent concrete. <br />4. Correct other low areas scheduled to receive floor coverings with a repair underlayment. <br />Prepare, mix, and apply repair underlayment and primer according to manufacturer's <br />written instructions to produce a smooth, uniform, plane, and level surface. Feather <br />edges to match adjacent floor elevations. <br />5. Correct other low areas scheduled to remain exposed with a repair topping. Cut out low <br />areas to ensure a minimum repair topping depth of 1/4 inch to match adjacent floor <br />elevations. Prepare, mix, and apply repair topping and primer according to <br />manufacturer's written instructions to produce a smooth, uniform, plane, and level <br />surface. <br />6. Repair defective areas, except random cracks and single holes 1 inch or less in diameter, <br />by cutting out and replacing with fresh concrete. Remove defective areas with clean, <br />square cuts and expose steel reinforcement with at least a 3/4 -inch clearance all around. <br />Dampen concrete surfaces in contact with patching concrete and apply bonding agent. <br />Mix patching concrete of same materials and mixture as original concrete except without <br />coarse aggregate. Place, compact, and finish to blend with adjacent finished concrete. <br />Cure in same manner as adjacent concrete. <br />7. Repair random cracks and single holes 1 inch or less in diameter with patching mortar. <br />Groove top of cracks and cut out holes to sound concrete and clean off dust, dirt, and <br />loose particles. Dampen cleaned concrete surfaces and apply bonding agent. Place <br />patching mortar before bonding agent has dried. Compact patching mortar and finish to <br />match adjacent concrete. Keep patched area continuously moist for at least 72 hours. <br />Perform structural repairs of concrete, subject to Architect's approval, using epoxy adhesive and <br />patching mortar. <br />F. Repair materials and installation not specified above may be used, subject to Architect's <br />approval. <br />3.16 FIELD QUALITY CONTROL <br />Testing and Inspecting: Owner will engage a special inspector and qualified testing and <br />inspecting agency to perform field tests and inspections and prepare test reports. <br />B. Inspections: <br />1. Steel reinforcement placement. <br />2. Headed bolts and studs. <br />CAST -IN-PLACE CONCRETE 033000 - 19 <br />