This study investigates the mechanical properties of self-compacting concrete (SCC) blended with fly ash and metakaolin, highlighting the material's advantages in construction due to improved flowability and reduced labor requirements. Various proportions of these admixtures were tested to determine their effects on rheological and mechanical properties, resulting in optimized concrete mixtures that achieved notable compressive and tensile strengths. The findings suggest that a blend of 15% fly ash and 15% metakaolin provides a balanced approach to performance and cost efficiency in concrete applications.