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E. Superplasticizers must meet all ASTM requirements and have compatibility test results <br /> with approved mix design. <br /> 2 .03 CONCRETE MIDI <br /> A. Mix concrete in accordance with ASTM C94 . <br /> B . Provide concrete to satisfy the following requirements <br /> I . Compressive Strength (28 days) : 4000 psi all locations, 3000 psi for sidewalks . <br /> 2 _ Water/Cement ratio maximum 0 .48 without admixtures by weight. <br /> 3 . Fly Ash Content: maximum 15 % of cement content, Type F only. <br /> 4 . Slump 4 t 1 inch regular, 7 -8 inch with superplasticizer, 6-8 inch pea rock pump <br /> mix . <br /> C . Use set-retarding admixtures during hot weather only when approved by Engineer. <br /> D . Air entraining agent may be considered in concrete mix, however, content must be kept to <br /> a minimum, and carefully monitored for addition to mix design. <br /> E. Superplasticizer shall be used in all R/C walls that are water holding structures; i.e. , <br /> clearwell, containment walls, etc. <br /> 2.04 ACCESSORIES <br /> recommended for below-grade <br /> A. Vapor Barrier: 10 mil thick clear polyethylene film, type <br /> application. <br /> I <br /> B . Non-Shrink Grout: Premixed compound consisting of non-metallic aggregate, cement, <br /> water reducing and plasticizing agents; capable of developing minimum compressive <br /> strength of 2,400 psi in 48 hours and 7 ,000 psi in 28 days. <br /> C . Water Stops: 6" x 3/8 " water stop, ribbed flat virgin polyvinylchloride equal to one of the <br /> following: <br /> 1 , Greenstceak - Style 580 <br /> l 2 . Synko-Flex - Synko-Flex Products <br /> 3 , Westec Barrier Tecbnologies - Style 619 . <br /> D. Water Stop: Bentonite type strips Rx101 , or applicable to condition, as manufactured by <br /> volclay, or equal. <br /> PART 3 — EXECUTION <br /> 3 .01 INSPECTION <br /> 044572017 <br /> 03300-3 <br />