Orange County NC Website
Browse       Search
DocuSign Envelope ID:07A4359F-6D47-4987-B1F1-BF667ACBB3BA <br /> d. Fill and compact with patching mortar before bonding agent has dried. <br /> e. Fill form-tie voids with patching mortar or cone plugs secured in place with <br /> bonding agent. <br /> 2. Repair defects on surfaces exposed to view by blending white portland cement and <br /> standard portland cement, so that,when dry,patching mortar matches surrounding color. <br /> a. Patch a test area at inconspicuous locations to verify mixture and color match <br /> before proceeding with patching. <br /> b. Compact mortar in place and strike off slightly higher than surrounding surface. <br /> 3. Repair defects on concealed formed surfaces that will affect concrete's durability and <br /> structural performance as determined by Architect. <br /> D. Repairing Unformed Surfaces: <br /> 1. Test unformed surfaces, such as floors and slabs, for finish, and verify surface tolerances <br /> specified for each surface. <br /> a. Correct low and high areas. <br /> b. Test surfaces sloped to drain for trueness of slope and smoothness;use a sloped <br /> template. <br /> 2. Repair finished surfaces containing surface defects, including 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 /> 3. After concrete has cured at least 14 days,correct high areas by grinding. <br /> 4. Correct localized low areas during, or immediately after, completing surface-finishing <br /> operations by cutting out low areas and replacing with patching mortar. <br /> a. Finish repaired areas to blend into adjacent concrete. <br /> 5. Correct other low areas scheduled to receive floor coverings with a repair underlayment. <br /> a. Prepare, mix, and apply repair underlayment and primer in accordance with <br /> manufacturer's written instructions to produce a smooth, uniform, plane, and level <br /> surface. <br /> b. Feather edges to match adjacent floor elevations. <br /> 6. Correct other low areas scheduled to remain exposed with repair topping. <br /> a. Cut out low areas to ensure a minimum repair topping depth of 1/4 inch to match <br /> adjacent floor elevations. <br /> b. Prepare, mix, and apply repair topping and primer in accordance with <br /> manufacturer's written instructions to produce a smooth, uniform, plane, and level <br /> surface. <br /> Orange County Solid Waste Drainage Repairs DAA 2200365/TRC 017055.0000.0000 <br /> Drainage Repair Project November 2023 <br /> Orange County, NC 033000-15/19 <br />