Cover blocks are placed at regular intervals along the length of reinforcement bars before the concrete is poured. They help to ensure uniform concrete cover and prevent the reinforcement bars from coming into contact with the formwork or other surfaces during the pouring process. This ensures that the reinforcement remains properly positioned within the concrete element, providing the required structural strength and durability.

concrete cover blocks play a crucial role in ensuring the structural integrity and durability of reinforced concrete elements by maintaining the required distance between the reinforcement bars and the concrete surface.