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Concrete is a broadly utilized building matter that is highly appraised for its durability, strength, and adaptability. However, the sturdiness and integrity of concrete assemblies are seriously threatened by their sensitivity to corrosion, especially in harsh settings. The key worry is the corrosion of the embedded steel reinforcement in concrete, of which the upshot can be reduced load-bearing capacity, structural deterioration, and eventual failure. Concrete corrosion can be initiated and spread by several variables, comprising climatic conditions, carbonation, and chloride infiltration. New materials science developments provide fresh approaches to increased durability, and recent breakthroughs in anti-corrosion technology are revolutionizing the industry. Case studies and real-world implementations highlight the valuable advantages of these precautionary measures. Sealants and anti-corrosion coatings have become essential as a defensive tactic to address these problems. By acting as barriers, these materials keep corrosive substances out of the concrete and protect its structural integrity. The current chapter explores the complex function of sealants and anti-corrosion coatings in preventing concrete corrosion in this regard. The basic mechanisms of concrete corrosion and the variables that aggravate it are first examined. Subsequently, the chapter offers an in-depth analysis of several kinds of anti-corrosion sealants and coatings, together with their characteristics and modes of operation. There is also a discussion of practical topics like performance evaluation and application strategies. The final section of the chapter highlights the continued development of anti-corrosion techniques in maintaining the sustainability of concrete infrastructure by examining potential future trends and research areas.