Reinforced cement concrete is one of the most versatile materials used in the construction industry worldwide. It is expected that the reinforced concrete structures will serve for a long period of time. But there are many instances of premature failure of R.C. structures raising doubts about its durability. Most of these failures are attributed to the corrosion of reinforcement embedded in concrete. Corrosion causes gradual deterioration of structures and consequently their expected service life drastically gets reduced. In some cases, sudden collapse of concrete structures due to corrosion have been reported. Agreat variety of concrete structures such as industrial structures, hydraulic structures, marine structures, storage tanks, sewage treatment plants, highway bridges, parking garages, buildings etc., experience the damaging effects of corrosion. Corrosion attack of concrete structures takes place whenever an aggressive medium is present. The low durability of corroding concrete structures has raised great concern because of the cost associated with replacing and maintaining the existing infrastructure and the potential hazard to the public if the problem is not corrected.

Key words: Steel Corrosion, Column,Axial behaviour, Energy absorption capacity,Weight Loss.