2. Design the concrete mix for dry aggregate condition based on the following data: (1) Stipulations for proportioning (a) Grade designation (b) Type of cement (c) Maximum nominal size of aggregate (d) Minimum cement content (e) Maximum water-cement ratio (f) Workability (g) Exposure condition (h) Method of concrete placing (i) Type of aggregate (j) Maximum cement (OPC) content (k) Chemical admixture type M40 OPC 43 20 mm 320 kg/m 0.45 100 mm (slump) Severe (for RCC) Pumping Crushed angular aggregate 450 kg/m Superplasticizer with 29% water reduction capacity (2) Test data for materials Specific gravity of cement 3.15 Specific gravity of coarse aggregate 2.74 Specific gravity of fine aggregate 2.65 Specific gravity of superplasticizer 1.15 Water absorption: coarse aggregate 0.5% Water absorption: fine aggregate 0.9% Fine aggregate Zone I PTO