Why does the concrete vibrating table produce bubbles?

 Due to various ingredients, there are gaps between water and cement stones, resulting in uneven vibration after vibration and many bubbles cannot be discharged.

Generally, there are several reasons for bubbles:
1. The mold is not very smooth, and the roughness produces gaps and bubbles.
2. The vibration amplitude is relatively large, causing air to enter the middle of the cement.
3. Uneven vibrations result in high strength in some places and low strength in some places.
4. Vibration time The shutdown time is relatively long, and the vibration amplitude is large. The vibration is good. When it shakes, there will be air bubbles in the gap.
5. For the more viscous cement ratio, three-dimensional vibration can be considered.