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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 />H. Post - Installed Dowel Adhesive: Hilti HIT -HY 200 Safe Set System with Hilti Hollow Drill Bit <br />System with continuously deformed rebar per ICC ESR -3187. <br />2.10 REPAIR MATERIALS <br />A. Repair Underlayment: Cement- based, polymer- modified, self - leveling product that can be applied <br />in thicknesses from 1/8 inch and that can be feathered at edges to match adjacent floor elevations. <br />1. Cement Binder: ASTM C 150, portland cement or hydraulic or blended hydraulic cement as <br />defined in ASTM C 219. <br />2. Primer: Product of underlayment 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 by <br />underlayment manufacturer. <br />4. Compressive Strength: Not less than 4100 psi at 28 days when tested according to <br />ASTM C 109 /C 109M. <br />B. Repair Topping: Traffic - bearing, cement - based, polymer- modified, self - leveling product that can be <br />applied in thicknesses from 1/4 inch. <br />1. Cement Binder: ASTM C 150, portland cement or hydraulic or blended hydraulic cement as <br />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 by <br />topping manufacturer. <br />4. Compressive Strength: Not less than 5700 psi at 28 days when tested according to <br />ASTM C 109 /C 109M. <br />2.11 CONCRETE MIXES <br />A. Prepare design mixes for each type and strength of concrete determined by either laboratory trial <br />mix or field test data bases, as follows: <br />1. Proportion normal- weight concrete according to ACI 211.1, ACI 301, and ACI 318. <br />B. Use a qualified independent testing agency for preparing and reporting proposed mix designs for the <br />laboratory trial mix basis. <br />C. Cementitious Materials: Percentage, by weight, of cementitious materials other than portland cement <br />in concrete shall be as noted. <br />D. Footings: Proportion normal- weight concrete mix as follows: <br />1. Compressive Strength (28 Days): 3,000 psi. <br />2. Nominal Maximum Aggregate Size: 1 inch. <br />3. Combined Fly Ash and Pozzolan: Not more than 25 percent. <br />4. Maximum Slump: 4 inches. <br />CAST -IN-PLACE CONCRETE 033000-6 <br />