To protect the steel reinforcement bars ( rebar’s ) from environmental effects to prevent their corrosion.
To provide thermal insulation, which protects the reinforcement bars from fire.
To give reinforcing bars sufficient embedding to enable them to be stressed without slipping.
Why we provide Concrete Cover?
Covering is provided to arrest the attack of corrosion. Reinforcement is prone to corrosion and fire for atmospheric conditions. If the proper cover isn’t implemented then there is more chance of corrosion and cracks in hardened RCC.
Covering is provided For every element of the building (Slabs, Beams, footings) where the reinforcement is used. In order to maintain the proper arrangement of reinforcement and to provide a covering for reinforcement. covering blocks are used.