This research introduces a novel concrete construction technique, Dual-layered Concrete (DC), designed to enhance the mechanical and durability properties of Conventional Concrete (CC) construction methods. The methodology employs a controlled material segregation technique to create a strong core and a protective outer mantle. This process concentrates coarse aggregates in the core, improving mechanical properties, while the cement paste forms the outer mantle, providing enhanced durability characteristics. Preliminary investigations have demonstrated exceptional improvements in mechanical properties, including increased ductility. This study evaluates the durability characteristics of DC specimens when exposed to aggressive environments, including exposure to acids, chlorides, and sulfates, along with water absorption tests. Furthermore, the influence of varying mix richness (M30, M35, and M40 grades) and the age of the DC specimens on the durability of DC is thoroughly examined, comparing its performance with CC. The core objective is to ascertain the enhancement in durability offered by DC over CC, and to determine the impact of mix richness and age on its long-term performance. The results indicate that DC exhibits superior durability across all tested parameters. Specifically, the M35 grade showed optimal resistance to sulfate attack, highlighting the importance of mix optimization. The findings of this research provides valuable insights into engineering DC structures, enhancing their durability and applicability across various construction projects, although further microstructural analysis is recommended to fully understand the underlying mechanisms contributing to its enhanced performance.