RCC

 

RCC



Reinforced concrete (RC) (also called reinforced cement concrete or RCC) is a composite material in which the relatively low tensile and durability of concrete is resisted by the inclusion of reinforcement with high tensile strength or ductility. Reinforcement (steel reinforcing bar) (rebar) is usually not required and is passively embedded in concrete before concrete sets.

Description

Reinforcement plans are typically designed to withstand tensile stress in specific areas of concrete that can lead to unacceptable cracking and / or structural failure. Modern reinforced concrete may contain different reinforcing materials made from steel, polymer or alternative composite materials with or without a combination of rebar. Reinforced concrete can also be stretched permanently (concrete in compression, reinforcement in tension), so as to improve the behavior of the final structure under working loads. In the United States, the most common methods of doing this are known as pretensioning and post-tensioning.

For a strong, ductile and durable construction the reinforcement needs to have the following properties at least:-

•           High relative strength

•           High toleration of tensile strain

•           Good adhesion to concrete, regardless of pH, humidity and similar factors

•           Thermal compatibility, which does not cause unacceptable stress (such as expansion or contraction) in response to changes in temperature.

•           Durability in the concrete environment, regardless of corrosion or sustained stress, for example.

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