An Experimental Study of Corrosion in RCC Structure: Prevention, Repair and Maintenance

Abstract

Infrastructure development, that is going on today, all over the world, is like never before. Reinforced cement concrete is the most versatile and potentially one of the most durable materials that a designer can choose for almost any type of structure. It is because RCC can be mould into almost any desired shape; it is weather resistant, strong and durable under the normal exposure conditions. Today the major problem currently confronting the construction industry all over the globe is ‘deterioration of RCC structures. The phenomenon is so pervasive that it has created almost a crisis-like situation and has put the engineering fraternity on red alert. A number of factors are responsible for early distress in RCC structure. However, all over the world. Rebar Corrosion in concrete’ is seen as major cause of distress of structures and thus an issue of major concern in the sustainable infrastructure development. Worldwide, it is now confirmed that, even after specific national building code requirement of durability are followed, there is always a high risk of premature rebar corrosion in concrete. Even when, code specification for concrete cover and concrete quality are observed, rebar corrosion in concrete occurs, causing loss of serviceability and safety of RCC structures. The scale and extent of the problem is severe. In this research work one building from Mumbai is choose. Detailed structural audit conducted. Based upon those various reasons associated with rebar corrosion, corrosion mechanism and different methods to prevent rebar corrosion is proposed in this work.