A Review on Study of Rehabilitation and Repair Techniques of R.C.C. Building

Abstract

Abstract: Cement concrete reinforced with steel bars is an extremely popular construction material. One major flaw, namely its susceptibility to environmental attack, can severely reduce the strength and life of these structures. External reinforcement using steel plates have been used in earlier attempts to rehabilitate these structures. The most important problem that limited their wider application is corrosion. This project emphasize on Rehabilitation of R.C.C. structures. The purpose of this project is to highlight the various techniques of repair and rehabilitation methods to be undertaken for structures with defects and deficiencies that necessitate rehabilitation. Repair and Rehabilitation methods currently used are reviewed on the basis of present knowledge and the merits of a holistic system approach. This project focuses on visible symptoms of the problem rather than on invisible problems as well as the possible causes behind them. This project focuses on various techniques and repair materials used for the satisfactory performance of the repaired structure. This project presents an analysis of concrete illnesses, and problems leading to unsatisfactory performance of repaired concrete structure. This project describes the analysis the types of surface preparations that are commonly adopted in Indian conditions. This project highlights the problem of reinforcing steel corrosion in concrete structures and attempts to provide the remedial measures available in design to mitigate the effects of corrosion. In view of these limitations the various types of coatings are available and the precautions to be taken in the selection of coatings systems are also discussed. This also highlights the importance of epoxy resins and various methods of epoxy in the construction applications such as repairing of cracks, patching, grouting of concrete, structural adhesives and anti-corrosive linings etc. The conclusive part deals with cost comparison between present approximate estimated cost of new building & rehabilited building.