The development in marine industry and its effort in building bridges has
placed a huge demand on reliability and duration of service of reinforcing
steel in concrete. Literature has documented several studies on corrosion of
reinforcing steel in concrete induced via carbonation and chloride in marine
milieus. Extension of concrete structures service life has been one of the
foremost strong worries of the concrete industry, especially for marine
industry. Hence, the necessity to employ a cost effect system for shielding the
reinforced steel in concrete from corrosion. Studies have shown that one
prospective solution in combating corrosion deterioration in reinforced steel
in concrete structures is the introduction of corrosion-inhibiting admixtures
into concrete. This review discussed at length corrosion in reinforced concrete
and corrosion inhibitors in relation to concrete together with the classification
of inhibitors based on the method of applications. This review further reports
corrosion-inhibiting admixtures in concrete. As a result, the aspects of corrosion inhibitors this manuscript reviewed are corrosion inhibitors
employed as admixtures in concrete for new construction in the marine
industry. Furthermore, corrosion inhibitors are employed for repairs and
maintenances admixed with concrete for patches on marine structures,
squirted onto the surface of the concrete or put on the concrete surface via
saturation treatment. As a result of the excellent properties of functional
nanostructured materials, the advancement in the implementation of
functional materials in inhibiting admixtures in concrete is fast growing in
marine industry. Hence, the Integration of functional materials in inhibiting
admixture and their compatibility were reviewed. The significance of inhibitors
employed as admixtures in concrete for practical applications of corrosion are
the suppression or mitigation of corrosion process of metals used in marine
industry and the patches of already constructed structures. The current
problems related to corrosion-inhibiting admixtures in concrete and the future
research and development directions were discussed