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INTRODUCTION 1.1 ELECTROCHEMICAL CORROSION BEHAVIOR OF STEEL REINFORCEMENT AND CATHODIC PROTECTION IN CONCRETE Concrete is a durable construction material. Reinforcing steel is added to concrete to form a stronger and more durable material. Generally concrete because of its high alkalinity (pH = 12.6) gives protection to steel by creating a passive environment. Concrete infrastructures generally undergo deterioration from either lack of concrete durability or from corrosion of reinforcements [1,2]. Nonhomogeneity of the metal surface, effects of applied stress, depassivity, and surface contamination are the factors responsible for the deterioration of reinforcements. Coastal/marine environments with more salts account for extensive damage to concrete bridges, decks, offshore platforms, piers, vessels, and harbor facilities. Such type of failure is found only when critical quantities of corrosive ions particularly chloride ions penetrated to close to reinforcements

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