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Given the very harsh service environments that many bridges are typically exposed to, it is difficult to build reinforced concrete bridges that would be free of steel reinforcement corrosion. The achievement of this goal requires the adoption of system approach, i.e., using a combination of different measures, such as adequate depth of concrete cover, quality concrete, corrosion inhibitors admixture, and corrosion-resistant reinforcement: (reference)
Adequate concrete cover
Quality concrete
Alternative reinforcements
Corrosion inhibiting admixtures
Corrosion protection of prestressed concrete bridge members
