Parametric Analysis of Sustainable Concrete Incorporating Agricultural Waste and Ground Granulated Blast Furnace Slag (GGBFS)

The rapid increase in construction and demolition activities has led to excessive generation of concrete waste, creating

major environmental and disposal challenges. A sustainable way to reduce landfill usage and preserve natural resources is to

recycle demolished construction debris (DCW) as a partial substitute for natural coarse aggregate. This study uses crushed

concrete waste to examine the durability and mechanical qualities of RAC (recycled aggregate concrete with different

replacement amounts of the coarse material (0%, 20%, 40%, 60%, or 80%). Compressive power and ability to absorb water for 7,

14, and 28, days of cure were measured in the lab. The findings show that up to 40% replacement, compressive strength stays

within acceptable structural bounds but marginally declines with increasing replacement levels. Because recycled aggregates are

porous, water absorption somewhat increases. Overall, the study demonstrates that partial utilization of demolished concrete

waste is feasible, cost-effective, and environmentally beneficial for sustainable construction.