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amecAM <br />PART 2: PRODUCTS <br />2.01 MATERIALS <br />A. Portland Cement, ASTM C 150, Type V. <br />B. Coarse Aggregate, ASTM C 33, except that clay and shale particles shall not exceed 1 percent of total <br />aggregate. <br />C. Fine Aggregate, ASTM C 33, washed natural sand. <br />2.02 MIXES <br />A. Mix Designs: <br />Concrete mix design shall be designed by an independent testing laboratory. <br />B. Cast-In-Place Concrete: <br />1. Cast-in-place concrete shall have a minimum 28-day compressive strength of 4,000 psi. <br />2. Maximum Aggregate size of 1-inch. <br />3. Placement slump of between 2-inches and 5-inches. <br />PART 3: EXECUTION <br />3.01 INSTALLATION <br />A. Ready-Mix Concrete shall be batched, transported, and placed in accordance with ASTM C 94. Each <br />batch delivered to the Site shall be accompanied by a certified weight master's delivery ticket. <br />B. All mixed concrete delivered to the Site shall be placed within 90 minutes from the time of <br />introduction of cement and water into the mix. <br />C. No water shall be added after leaving the batch plant without the approval. of CERTIFYING <br />ENGINEER. <br />D. Placement of concrete, once started, shall be performed as a continuous operation until the scheduled <br />placement is completed. <br />E. Cold joints shall be approved by CERTIFYING ENGINEER. <br />F. Vibrators shall be used only to minimize honeycomb, and shall not be used to move concrete from <br />one location to another. Concrete shall not be moved in the forms more than 5 feet. <br />G. The rock surface within the competent bedrock of the underground working; shall be scaled to <br />removed any loose material prior to Cement Plug placement. <br />3.02 CLEANING <br />• All form materials and debris resulting from construction shall be disposed of as directed by MANAGER. <br />Section 03320 Page 2 of 3 September 3, 2008 <br />Concrete Plug Revision 1 <br />SAProjects\1125 CC&V Phase 5 VLF\I - Tech Specs\Arequa IFC Specs\03320.r1.doc