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t(Type III) free from injurious water soluble salts or alkalies. High early <br />strength cement may only be used, with written approval of the <br />Engineer. Air entraining cements may be used with written approval <br />of the Engineer. Cement brands shall be subject to approval. <br />3. The following designated sizes* of aggregate shall be the <br />maximum employed in concrete: <br />1 2 inch for plain concrete <br />1 inch for reinforced sections 10 inch and over in thickness <br />' 3/4 inch for reinforced sections less than 10 inches in thickness <br />4. *Note: The "Designated Size" and the corresponding <br />gradations shown represent the end or combined gradation of <br />the coarse aggregate to be used in the final concrete. <br />07/03 03300 -6 03- 3148.A <br />C. Aggregates: <br />1. Fine aggregate shall <br />consist of washing inert sand conforming <br />to the requirements <br />of ASTM Specification C -33, and the <br />following detailed requirements: <br />Sieve <br />% Passing <br />1 <br />No. 4 <br />95 -100% <br />16 <br />60 -75 <br />50 <br />13 -30 <br />100 <br />3-8 <br />Fineness Modulus <br />2.4 -2.6 <br />Organics <br />Organic Plate 2, per ASTM <br />C -40 <br />Silt <br />2.0% maximum <br />Mortar Strength <br />95% minimum as per ASTM <br />C87, Section 10 <br />Soundness <br />8% maximum loss, using <br />' <br />magnesium sulfate, <br />subjected to 5 cycles <br />2. Coarse aggregate shall <br />consist of well - graded crushed rock or <br />washing gravel conforming to the requirements of ASTM <br />' <br />Specification C -33 and the following detailed requirements: <br />Organics <br />Organic Plate 1, per ASTM <br />C -40 <br />Silt <br />1.0% maximum <br />Soundness <br />8% maximum loss, using <br />magnesium sulfate, <br />subjected to 5 cycles <br />3. The following designated sizes* of aggregate shall be the <br />maximum employed in concrete: <br />1 2 inch for plain concrete <br />1 inch for reinforced sections 10 inch and over in thickness <br />' 3/4 inch for reinforced sections less than 10 inches in thickness <br />4. *Note: The "Designated Size" and the corresponding <br />gradations shown represent the end or combined gradation of <br />the coarse aggregate to be used in the final concrete. <br />07/03 03300 -6 03- 3148.A <br />