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No. 4 O to 5 No. 8 O to 15 No. 16 3 to 35 No. 30 30 to 75 No. 50 65 to 95 No. 100 93 to 100 The above gradation represents the extreme limits which will be used in determining the suitability for use from all sources of supply. The gradation from any one source shall be reasonably uniform, and not subject to the extreme range of gradation specified above. For the purpose of determining the degree of uniformity, a fineness modulus determinations shall be made upon representative samples, submitted by the Contractor, from such sources as the purposes to use. Fine aggregate from any one source, having a variation in fineness modulus greater than 0.20 either way from the fineness modulus of the • representative sample submitted by the Contractor, may be rejected. Weighted percentage of loss shall be not more than 12 percent by weight when subjected to five cycles of the sodium sulfate soundness test in accordance with AASHTO T104. d. Miami Oolitic rock screenings, used as fine aggregate for normal Portland cement concrete and structural lightweight concrete, shall comply with AASHTO M6, Sections 6.1 and 7.1. Screenings shall be produced from rock having a loss not greater than 45 percent when subjected to the Los Angeles Abrasion Test Specific gravity(saturated, surface-dry) shall be at least 2.48. C. Floor hardener: 1. Provide mineral or metallic hardener, natural gray in color. 2. Acceptable products: a. "Lithochrome" by L.M. Scofield Company; b. "Hydroment" by the Upco Company; c. "Colorcron" or"Masterplate" by Master Builders; d. "Harcol" or "Ferrolith H" by Sonneborn; e. "Colorundum" or"Duraflex" by A.C. Horn Products. D. Polyethylene vapor barrier membrane: 1. Provide polyethylene sheet for slab on grade of the thickness shown on the Drawings, complying with ASTM D2103. PART 3: EXECUTION 3.01 FIELD QUALITY CONTROL: 08/12 03305-8 11-4179