There are several studies that have shown the concrete's strength, and the exposure of treated recycled aggregates and quarry dust plays a significant part in the building industry today. Quarry dust, which is a byproduct of the manufacture of concrete, may be used to partially or completely replace natural sand in the recycling process. During the processing of granite stones into coarse aggregates of various sizes, quarry dust is generated as a by-product. As the cost of sand and natural coarse aggregate continues to rise, the use of these substitutes has shown to be more cost-effective and more durable than traditional concrete. Various building wastes are used in this research in the most efficient way possible. The use of nano-silica as a substitute for cement in a concrete mix has been shown to increase the strength of the finished product. Physical and mechanical testing are carried out in compliance with Indian norms in this experimental investigation. samples of concrete with and without the use of recycled aggregates and quarry dust were made according to the IS-10262, 2009 mix design process. RCA and quarry dust are added to the mix in the same proportions as in the traditional mix, which is 0 percent, 50%, and 100%. Afterward, they are cured for 28 days at a steady room temperature to determine the concrete's compressive, tensile, and flexural strengths. © 2023 Elsevier B.V., All rights reserved.