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<br />03300 - 5/22 <br />PART 2 - MATERIALS <br />2.01 GENERAL: <br />A. All materials shall be classified as acceptable for potable water use according to NSF <br />Standard 61. <br />B. Cement for concrete that will contact potable water shall not be obtained from kilns <br />that burn metal rich hazardous waste fuel. <br />C. Materials shall be delivered, stored, and handled so as to prevent damage by water <br />or breakage. Cement reclaimed from cleaning bags or leaking containers shall not <br />be used. Cement shall be used in the sequence of receipt of shipments. <br />D. Materials shall comply with the requirements of Sections 201, 203, and 204 of ACI <br />301, as applicable. <br />E. Storage of materials shall conform to the requirements of Section 205 of ACI 301. <br />2.02 CEMENT: <br />A. Cement shall be standard Portland Cement Type I conforming to ASTM C 150 A <br />minimum of 85 percent of cement by weight shall pass a 325 screen. <br />B. A single brand of cement shall be used throughout the WORK, and prior to its use, <br />the brand shall be accepted by the ENGINEER. <br />C. Sacked cement shall be stored in such a manner so as to permit access for <br />inspection and sampling. Certified mill test reports, including fineness, for each <br />shipment of cement to be used shall be submitted to the ENGINEER, if requested, <br />regarding compliance with these Specifications. <br />2.03 AGGREGATES: <br />A. Aggregates shall be obtained from pits acceptable to the ENGINEER, shall be non- <br />reactive, and shall conform to the requirements of ASTM C 33. <br />B. When tested in accordance with ASTM C 33, the loss resulting after 5 cycles of the <br />soundness test, shall not exceed 10 percent for fine aggregate and 12 percent for <br />coarse aggregate, when using sodium sulfate. <br />C. When tested in accordance with ASTM C 33, the ratio of silica released to reduction <br />in alkalinity shall not exceed 1.0. <br />D. Course Aggregates: <br />1. Coarse aggregates shall be crushed stone, gravel or other approved inert <br />material having clean, hard, durable, uncoated particles conforming to ASTM C <br />33. <br />2. The coarse aggregates shall be prepared and handled in 2 or more size <br />groups for combined aggregates with a maximum size greater than 3/4-inch. <br />When the aggregates are proportioned for each batch of concrete, the 2 size <br />groups shall be combined. <br />3. When tested in accordance with ASTM C 33, the coarse aggregate shall show <br />a loss not exceeding 42 percent after 500 revolutions, or 10.5 percent after 100 <br />revolutions. <br />E. Fine Aggregates: