A.S. Radke

PB Ullagaddi

Abstract

Infrastructure development and Industrial growth is mutually dependant. Today the huge requirement of energy and sustainable industrial growth are the issues of main concern globally. Industries catering to infrastructure development require huge amount of energy and in turn are responsible for the Green House Gas Emissions. Infrastructure projects are built for certain design life. Use of steel is almost mandatory for these projects. 'Corrosion of steel' is one serious issue bothering the mankind since we began using the metal. The socio-economic importance of the problem is now well known. 3% to 4% of national Gross Domestic Product of almost every nation in the world is spent on repairs on account of corrosion. 40% of steel produced in India is used for either replacement or repairs due to corrosion. The Green House Gas emission responsible for this 40% of steel could be saved if corrosion is prevented from occurring. In addition, if the structure is abandoned, the huge amount of concrete used, is also wasted; it is another major contributor of Green House Gases. The paper deals with different corrosion mitigation techniques that can reduce the losses due to corrosion. Some corrosion inhibitors in the form of admixtures and coatings are studied by the authors. In view of electrochemical nature of corrosion, electrochemical studies were conducted in addition to the physical tests. Few have shown improvement in longevity of metals and in turn life of the structures. This will eventually reduce the ecological damage and make the industrial growth in India sustainable.

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