High Performance Reactive Powder Concrete Using Copper Slag and Pozzolanic Materials for Eco-Efficient Construction

This paper investigates the development and mechanical performance of Reactive Powder Concrete (RPC) incorporating industrial waste materials such as copper slag, silica fume, fumed silica, and basalt and steel fibres. The study emphasizes the need for environmentally sustainable construction materials and explores the optimization of ultra-high strength concrete without the use of natural fine or coarse aggregates. A series of trial mixes were developed and evaluated based on compressive, flexural, and tensile strengths, along with durability tests including Rapid Chloride Penetration and acid resistance. The finalized mixes achieved compressive strengths exceeding 100 MPa at 28 days. The results confirm that industrial by-products can effectively enhance the mechanical properties and sustainability of concrete, paving the way for future green construction practices.