Abstract- Concrete is highly valued for its dependability and longevity, which has led to its widespread use in construction. Its durability, reliability, affordability, flexibility, and environmental friendliness make it an excellent choice for construction projects. Sustainable civilizations focus on conserving natural ecosystems and strategically preparing for upcoming urban and industrial expansions. Concrete can be used to construct remarkable structures by implementing environmentally friendly and flexible techniques. This study aims to enhance the environmental sustainability of concrete by partially replacing ordinary 43-grade Portland cement with discarded powdered eggshells. The cement mixture has four different amounts of eggshell: 0%, 5%, 10%, and 15%, along with 0.5% stearic acid. Concrete cubes with dimensions of 150 mm on each side were built to assess the quality of the concrete. A number of experiments were conducted on concrete samples containing eggshell powder in order to determine the splitting tensile strength, compressive strength, and flexural strength of the material. The findings indicate that the addition of 10% eggshell powder results in an increase in maximum strength that is superior to the performance of the control material.