What is the recommended distance between each internal vibrator insertion relative to its radius of action?

The recommended distance between each internal vibrator insertion, relative to its radius of action, is one to one and a half times the radius of action. This approach ensures adequate coverage and efficient consolidation of concrete. When vibrators are placed within this distance, it allows for effective merging of the vibrated areas, minimizing the risk of voids and ensuring that the entire mass is properly consolidated, thus enhancing the strength and durability of the concrete structure.

Maintaining this spacing helps to prevent over-vibration, which can lead to adverse effects such as segregation of materials or excessive air being released, compromising the quality of the mix. The distance ensures that each vibrator works effectively without unnecessary overlap, promoting a well-consolidated end result.