Concrete Cover Blocks

Cover blocks specifications

1.      Concrete cover. in reinforced concrete. Stands for the minimum distance among the surface of embedded reinforcement and the exterior surface of the concrete.

2.      The difference dimension of concrete covers for different bending structure.

3.       Concrete cover for reinforcement is essential to safeguard the steel from corrosion        Â

4.      Density of concrete cover is based on ecological conditions

Cover Details: -

Longitudinal reinforcement bar(Column) Cover - Â 40mm

Beam Cover - Â 30mm

Towards retaining wall, grade beam, footing side & top Cover - 50mm

Slab & normal wall Cover - 15mm

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Advantages of Cover Block

Concrete Spacers prevent rebars from corrosion, protect them from fire to certain length of time and help to provide proper transfer of stresses from concrete to steel rebars, by helping provide proper cover to rebars.

·        a) Protection of the Rebar from the environment by providing a sical barrier.

·        b) It provides thermal insulation, which protects the reinforcement bars from fire.

·        c) To give reinforcing bars sufficient embedding to enable them to be stressed without slipping.

·        d) Ensures that concrete completely encircles Rebar allowing passivation.

·        e) Ensures that concrete completely encircles Rebar allowing complete bond to develop. Allows the Rebar to assume position and act as designed.

·        f) Prevents staining.

·        g) Provides a time lag in case of fire.