The increasing generation of iron ore tailings from mining and beneficiation processes has created significant environmental and disposal challenges, while the excessive extraction of natural sand for construction has contributed to the depletion of natural resources. The utilization of iron ore tailing sand (IOTS) as a partial replacement for natural fine aggregate in concrete paver blocks can provide a sustainable solution to both problems. This study focuses on the design and strength evaluation of concrete paver blocks incorporating iron ore tailing sand as a replacement for natural sand. Different proportions of IOTS are proposed to be used in the concrete mix, and their effects on the physical and mechanical properties of paver blocks are evaluated.  

The study includes the determination of compressive strength, water absorption, density, flexural strength, and abrasion resistance at different curing ages. The performance of IOTS-based paver blocks is compared with conventional paver blocks containing natural sand to determine the optimum replacement percentage. It is expected that an appropriate proportion of IOTS will improve particle packing and mechanical interlocking, resulting in satisfactory strength and durability characteristics. However, excessive replacement may increase water demand and porosity and consequently reduce strength. The study aims to establish the technical feasibility of using iron ore tailing sand in paver blocks while reducing natural sand consumption and providing a beneficial application for mining waste. The research can contribute to the development of economical, environmentally sustainable, and technically suitable concrete paving materials for appropriate pavement applications.