Deformation mechanisms in concrete refer to the processes by which concrete changes shape or undergoes displacement under load, including elastic deformation, plastic deformation, and creep. These mechanisms are central to understanding the structural behavior of concrete, particularly in response to external stresses and environmental factors. Concrete’s response to such stresses determines its service life and structural integrity, especially under severe environmental conditions such as extreme temperatures, chemical exposure, and mechanical loadings. The ability of concrete to withstand these conditions while maintaining its structural function is a critical aspect of civil engineering and materials science.