The G40 S4 (PCC) Green Concrete Design Mix is a high-performance, sustainable concrete designed in accordance with SS EN 206 and SS 544 for structural applications requiring both strength and durability. Engineered to meet Strength Class C32/40 with a target mean strength of 40 N/mm², the mix incorporates OPC, GGBS, and silica fume to reduce embodied carbon while improving long-term performance. Its S4 consistency class with a slump range of 160–210 mm provides excellent workability, making it suitable for precast components, reinforced structural elements, and areas with congested rebar. With a water-cement ratio of 0.45, DC-1 exposure class, CI ≤ 0.10, and a concrete density of 2357 kg/m³, this mix offers enhanced durability, low permeability, and reliable performance in demanding construction environments, supported by high-range superplasticiser MGA 8537 for optimal flow and placement efficiency.