When concrete is poured, what is used to remove air pockets?

When concrete is poured, a vibrator is used to remove air pockets and ensure proper consolidation. The vibrator helps to agitate the concrete mix, allowing it to flow more freely and fill in gaps, which eliminates entrapped air. This process is crucial because air pockets can lead to weak spots in the finished concrete, compromising its strength and durability.

Using a vibrator not only enhances the integrity of the concrete but also improves the overall finish by reducing potential voids that might cause issues later. The other options—like a hammer or concrete saw—serve entirely different purposes, such as breaking up concrete or cutting it after it has cured, and a trowel is primarily used for finishing the surface of the concrete rather than addressing air pockets during the pouring process.