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DocuSign Envelope ID:07A4359F-6D47-4987-B1F1-BF667ACBB3BA <br /> 3. Obtain aggregate from single source. <br /> 4. Obtain each type of admixture from single source from single manufacturer. <br /> B. Cementitious Materials: <br /> 1. Portland Cement: ASTM C 1501C 150M,Type IA. <br /> 2. Fly Ash: ASTM C618,Class C or F. <br /> 3. Slag Cement: ASTM C989/C989M, Grade 100 or 120. <br /> 4. Silica Fume: ASTM C1240 amorphous silica. <br /> C. Normal-Weight Aggregates: ASTM C33/C33M,Class 3M coarse aggregate or better,graded. <br /> Provide aggregates from a single source. <br /> 1. Alkali-Silica Reaction: Comply with one of the following: <br /> a. Expansion Result of Aggregate: Not more than 0.04 percent at one-year when <br /> tested in accordance with ASTM C 1293. <br /> b. Expansion Results of Aggregate and Cementitious Materials in Combination: Not <br /> more than 0.10 percent at an age of 16 days when tested in accordance with <br /> ASTM C 1567. <br /> C. Alkali Content in Concrete: Not more than 4 lb./cu. yd. for moderately reactive <br /> aggregate or 3 lb./cu. yd. for highly reactive aggregate, when tested in accordance <br /> with ASTM C1293 and categorized in accordance with ASTM C1778, based on <br /> alkali content being calculated in accordance with ACI 301. <br /> 2. Maximum Coarse-Aggregate Size: 3/4 inch nominal. <br /> 3. Fine Aggregate: Free of materials with deleterious reactivity to alkali in cement. <br /> D. Air-Entraining Admixture: ASTM C260/C260M. <br /> E. Chemical Admixtures: Certified by manufacturer to be compatible with other admixtures that <br /> do not contribute water-soluble chloride ions exceeding those permitted in hardened concrete. <br /> Do not use calcium chloride or admixtures containing calcium chloride in steel-reinforced <br /> concrete. <br /> 1. Water-Reducing Admixture: ASTM C494/C494M, Type A. <br /> 2. Retarding Admixture: ASTM C494/C494M, Type B. <br /> 3. Water-Reducing and-Retarding Admixture: ASTM C494/C494M, Type D. <br /> 4. High-Range,Water-Reducing Admixture: ASTM C494/C494M, Type F. <br /> 5. High-Range,Water-Reducing and-Retarding Admixture: ASTM C494/C494M, Type G. <br /> 6. Plasticizing and Retarding Admixture: ASTM C1017/C1017M,Type 11. <br /> 7. Set-Accelerating Corrosion-Inhibiting Admixture: Commercially formulated, anodic <br /> inhibitor or mixed cathodic and anodic inhibitor; capable of forming a protective barrier <br /> and minimizing chloride reactions with steel reinforcement in concrete and complying <br /> with ASTM C494/C494M,Type C. <br /> 8. Non-Set-Accelerating Corrosion-Inhibiting Admixture: Commercially formulated,non- <br /> set-accelerating, anodic inhibitor or mixed cathodic and anodic inhibitor; capable of <br /> Orange County Solid Waste Drainage Repairs DAA 2200365/TRC 017055.0000.0000 <br /> Drainage Repair Project November 2023 <br /> Orange County, NC 033000-6/19 <br />