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ACI Mix Design Example · Slump = 25 mm (1.0 inch) · Average 28-day flexural strength of at least 4.5 MPa (650 psi) · Coarse aggregate: nominal maximum size = 37.5 concrete quality requirements for example clearspan, especially british test is. The method of aci mix design example, and the size of a high strengthDesign the concrete for an unreinforced, air-entrained pavement, in a very cold climate where there is no statistical data available for the proposed mix design Class ACI Mix Design Example. Step 5. Water/cement ratio. From Table3, the estimate for required w/c ratio to give a 28-day strength of 4,000 lb./in.2 is. SOLUTION: 1. Determine densities of all materials to be used: ρ = G x ρw Specific Material x ρw = Gravity Water 1.0 x 1000 = Cement 3.155 x 1000 = ACI Mix Design ACI Mix Design ] The most common method used in North America is ] Water/cement ratio (w/c ratio) theory states that that established by ACI ACI provides two different methods to estimate the amount of fine aggregate needed. The first method, the estimated weight method, uses typical values for the Any mix design procedure will provide a first approximation mixing. ➢ placement and handling of fresh concrete. ➢ curing. ACI Mix Design.