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<br />002412 <br /> <br />Duraneo Purnoine Plant - Staee I <br /> <br />Use the amount of air-entraining admixture necessary to effect a total air <br />content in the concrete placement as shown in table 03300A - Total air <br />content. <br /> <br />4. Extended set control admixture system. <br /> <br />a, May be used for concrete hauls longer then 1- 112 hours. <br /> <br />b, Conform to ASTM C 494 for Type B or D chemical admixtures, <br /> <br />c. <br /> <br />Ii" <br /> <br />c, Use a one or two component set control admixture system may be used to <br />control cement hydration for concrete subjected to hauls in excess of 1- 112 <br />hours or concrete placements requiring specific delays in setting time, <br /> <br />d. The admixture system shall be Delvo Stabilizer manufactured by Master <br />Builders Inc" 23700 Chagrin Blvd" Cleveland OH 44122-5554, (216) <br />831-5500; or an approved equal, <br /> <br />e, Determine the admixture quantity required to stabilize concrete using <br />jobsite materials before placing any concrete, <br /> <br />f. Monitor initial concrete setting time and adjust dosage during the project, <br />if necessary, to achieve the required set time, <br /> <br />5, Concrete coloring admixture: <br /> <br />a. Reference: <br /> <br />b. <br /> <br />Method of addition: Added at the concrete batch plant. <br />Concrete color shall be uniform for all batches, <br /> <br />c. <br /> <br />d. Shall meet the color standard for Davis Color - Coachella Brown or <br />equivalent. <br /> <br />Table 03300A - Total air content, <br /> <br />Nominal maximum size Total air, percent by <br />coarse aggregate volume, of concrete <br />I inch 5.5 plus or minus I <br />2 inch 4.5 plus or minus I <br /> <br />F, Water <br /> <br />I, ASTM C 94, paragraph 4, 1.3 and Table I; except wash water shall not be used for <br />mixing concrete, <br /> <br />2, Free from objectionable quantities of silt, organic matter, salts, and other <br />impurities, <br /> <br />3, Soluble sulfate content: not to exceed 3,000 ppm in mix water. <br /> <br />G, Sand <br /> <br />Cast-in-Place Concrete <br />03300 - 8 <br />