How does oxidation effect steel and what consequences does this have on steel bridges?

Expert Solution

The presence of oxidation and moisture causes corrosion in steel by electrochemical process. The iron present is oxidised to produce rust occupying six times volume of the original material. The rate at which corrosion progresses depends on factors like environment etc.

Uniform corrosion is seen in steel bridges on plates and shapes with large surface areas that can be uniformly oxidised or attacked. The progessive weakening causes a sudden deterioration of bridge. Reinforced concrete is also vulnerable to rust damage. Internal pressure caused by expanding corrosion of concrete-covered steel and iron can cause the concrete to spall, creating severe structural problems. It is one of the most common failure modes of reinforced concrete bridges and buildings.

samet mamat answered 2 years ago

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