Thermally Sprayed Coatings for Concrete Protection in Cold Marine Environments

Concrete is one of the most widely used materials in engineering and construction, forming the backbone of modern infrastructure, from buildings and bridges to offshore structures. Its versatility, strength, and durability have made it essential in both everyday applications and engineering structures. However, when exposed to harsh marine environments, particularly in cold regions, concrete faces significant challenges, including freeze-thaw cycles, chloride-induced corrosion, and ice impact / friction. These conditions accelerate the degradation of concrete, reducing the lifespan and safety of marine structures. To overcome these issues, the application of protective coatings has become essential. Among various methods, thermal spraying offers a promising solution for enhancing concrete durability in seawater environments. By providing a barrier against moisture, ion diffusion, and lowering ice adhesion, these coatings can significantly extend the service life of concrete structures subjected to the stresses of cold marine climates. This study explores the use of thermally sprayed multilayered coatings on concrete, with a focus on their performance in protecting concrete from the unique challenges presented by cold sea water environments.