This study investigates the mechanical behavior of concrete with partial replacement of tire retread fibers, aiming to assess their suitability as a sustainable alternative in concrete production. Through a comprehensive analysis of mechanical properties, the research sheds light on the viability of integrating tire retread fibers into concrete mixtures. Key findings include the reduction in specific mass due to increased porosity with higher fiber content, emphasizing the importance of optimizing this property. Additionally, the study observes decreased compressive strength over time, highlighting the need for understanding concrete performance changes. While tensile strength peaks at 15% replacement, further investigation is warranted to ascertain long-term trends. Furthermore, the absorption by capillarity test reveals that fiber pores mitigate water absorption, offering potential for enhancing concrete properties and reducing structural weight. These insights inform construction professionals, researchers, and policymakers striving to advance sustainable practices in the construction sector.