This study investigates the performance of different concrete mixtures, with a particular focus on the use of Expanded Polystyrene (EPS) beads and additives, such as silica fumes and fibers. The primary objective is to assess how these materials influence the weight and strength characteristics of concrete specimens. Three types of concrete specimens were examined: Conventional Concrete, Concrete with a 40% Replacement of Coarse Aggregate by EPS beads, and Concrete with a 40% Replacement of Coarse Aggregate by EPS beads along with Silica Fumes and Fibers. The results demonstrate a significant reduction in the weight of concrete specimens with the inclusion of EPS beads. A 40% replacement of coarse aggregate with EPS beads led to a weight reduction of approximately 13%, while the addition of silica fumes and fibers further increased the weight reduction to approximately 16%. This reduction in weight is advantageous in applications where lightweight construction materials are preferred, such as for ease of handling, transportation, and load-bearing considerations. However, it's important to note that the inclusion of EPS beads also resulted in a decrease in flexural strength. The flexural strength was inversely proportional to the weight reduction, highlighting the trade-off between weight reduction and structural performance. The study underscores the potential of EPS concrete and the impact of additives on weight and strength properties. It also raises questions regarding the optimization of mix designs to achieve a balance between weight reduction and other essential properties for specific construction applications. These findings contribute to the body of knowledge on sustainable construction materials and their practical applications in the construction industry. Further research is encouraged to explore tailored solutions for various construction scenarios, considering both sustainability and performance requirements.