Review of experimental study on sustainable concrete using recycled materials

Concrete is one of the most widely used construction materials; however, its production leads to significant environmental issues such as high carbon dioxide emissions from cement manufacturing and depletion of natural sand resources. This experimental study focuses on the development of sustainable concrete by incorporating eco-friendly and waste materials as partial replacements for conventional constituents. Neem leaf powder is used as a partial replacement for cement due to its pozzolanic and antibacterial properties, while styrene-butadiene-styrene (SBS) polymer waste is used as a partial replacement for fine aggregate to enhance bonding and crack resistance. The study involves laboratory-based casting, curing, and testing of concrete specimens to evaluate workability and strength characteristics. The results are expected to demonstrate reduced cement consumption, effective utilization of agricultural and polymer waste, improved durability, and overall enhancement in sustainability. This research promotes the use of low cost, environmentally friendly materials in concrete for sustainable construction practices.