Although plain concrete is very strong in compression, it is very weak in tensile strength. Therefore, steel is being used as reinforcement in concrete as it is equally strong in compression and tension.
The steel for reinforcing is generally in the form of round bars varying in diameter from 5 to 40 mm, sometimes bars of other forms as mentioned above are also used.
Reinforced Cement Concrete (RCC) is more rigid, highly durable and fire resistant. It possess high tensile strength and it is economical in ultimate cost.
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