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Corrosion Protection Of Reinforcing Steel- for free

Reinforcing Steel

Reinforcing steel (usually called rebar and mesh) is made from a raw material called iron ore. Concrete is used in concrete to provide additional strength, because the tension is weak, and steel is strong in tension and compression.

It has long been recognized that corrosion of steel is very expensive and affects many industrial sectors, including concrete construction. The cost of corrosion of steel reinforcement in concrete is estimated at billions of dollars worldwide.

The corrosion of steel reinforcement represents the deterioration of the steel, which in turn adversely affects its performance and therefore that of cast concrete elements. A great amount of work has been under taken over the years in relation to the prevention of corrosion of steel, including the application of coatings, the properties of reinforcing steel and its resistance to corrosion, as well as the design of structures and structural processes, which included the study of the corrosion process itself.

The purpose of this report is to give readers an understanding of the principles of corrosion of rebar embedded in concrete and to understand the specific steel used to combat the effects of such corrosion.

Description

Stainless steel reinforcement proposed and used for the repair and modification of new reinforced concrete structures and existing structures may be an economical and technologically attractive approach. Available in different alloy configurations, this material has been undergoing development with the result that it can demand today to provide a total solution to provide concrete structures without corrosion. The initial cost of stainless steel is much higher than that of carbon steel, but its use can be justified on the basis that the increase in total project costs is small and is easily overtaken by the advantages of reduced maintenance and repair costs, especially if the interruption time and costs for such work are taken into account.

Recommendations for the convenient use of stainless steel reinforcement are available. The decision on which type of stainless steel to use depends on the required properties, such as the degree of corrosion protection required, the cost side, work ability, mechanical and physical properties and weld ability.

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