Strength Properties of Eco Friendly Conc

This project reports step-by-step development of a novel and practical way of producing green concrete using industrial (furnace slag) and constructional (ground sandcrete block as fine and RCA as NA) wastes for a better sustainable environment. The materials used are recycled aggregate, cupola slag, and crushed hollow block. Aggregate size ranging from 11-19 mm. The mix ratio 1:2:4 with 0.55 water/cement ratio was used in this study. 72 mix combinations were prepared for this study with partial replacement for natural aggregate with RA (0%, 25%, 50%, 75% and 100%), partial replacement of cement with ground granulated cupola slag (0%, 4%, 6%, 8% and 10%) and partial replacement of sand with crushed hollow block (0%, 25%, 50%, 75% and 100%). Workability (slump & compacting factor test), compressive and split tensile strength test were carried out at 7, 14, 28 and 56 days respectively to study and ascertain strength credibility. It was found that the replacement of natural aggregate, river sand and cement with recycled aggregate, crushed hollow block and cupola slag increases both the compressive and tensile strength considerably as the number of curing days increases. Based on experimental result it was concluded that 100% replacement of recycled aggregate, 100% replacement of crushed hollow block and 10% replacement of cupola slag starting from curing of 14 to 56 days gave satisfactory result and it is recommended for reinforced concrete works with proper mixed design.