Corrosion Rate Analysis in Reinforced Slab Elements

Corrosion of reinforcement has been established as the predominant factor causing widespread premature deterioration of concrete construction worldwide, especially of the structures located in the coastal marine environment. The most important causes of corrosion initiation of reinforcing steel are the ingress of chloride ions and carbon dioxide to the steel surface. After initiation of the corrosion process, the corrosion products (iron oxides and hydroxides) are usually deposited in the restricted space in the concrete around the steel. Their formation within this restricted space sets up expansive stresses, which crack and spall the concrete cover. Corrosion loss consumes considerable portion of the budget of the country by way of either restoration measures or reconstruction. The content of chlorides in the salt induces corrosion in the rebar of RCC.As the content of chloride increases and also it accelerates the rate of corrosion in the rebar.