ARTICLE
Don’t neglect the use of a vibrator during the concrete pouring process!
Vibrator is used to compact concrete as thoroughly as possible, ensuring that the structure is strong, durable, and safe.
Vibrator is a vibrating machine used to compact concrete. Its purpose is to prevent air from becoming trapped inside the concrete, thereby eliminating air pockets that could form as the concrete cures and cause it to become brittle. In addition, the use of a vibrator during the concrete compaction process helps increase the concrete’s strength.
How long does the compaction process take when using a vibrator?
Compact each spot for 5–15 seconds at regular intervals to ensure there are no air pockets in the concrete.
Is concrete that is compacted using a vibrator stronger than concrete that isn't?
Concrete that has been vibrated is stronger because, during the pouring process, no air becomes trapped inside the concrete. This prevents the formation of voids that would otherwise weaken the concrete and make it brittle.
How to Use a Vibrator Properly?
- Insert the tool into the freshly poured concrete mix, then pull it out slowly while compacting
- Ensure that the compaction process is performed at all points
- The typical duration for concrete compaction ranges from 5 to 15 seconds, depending on the thickness of the concrete being compacted
- Make sure the tip of the vibrator does not come into contact with the rebar to avoid damaging the structure or the rebar joints.
- After compaction, pull the tool at an angle rather than horizontally to avoid compromising the density of the concrete.
The main reason concrete must be vibrated:
- Removing air voids
When concrete is poured, air is often trapped inside. A vibrator helps remove this air so that the concrete becomes dense. - Increasing concrete density
Vibration causes the concrete mix to fill all gaps, including those between the reinforcing bars (rebar), resulting in a more solid structure. - Preventing porosity (honeycomb)
Without a vibrator, concrete can develop internal voids (honeycomb), which is extremely dangerous for the structural integrity. - Increasing concrete strength
Dense concrete = stronger and better able to withstand loads. - Improving surface quality
The final finish is smoother and neater, with fewer defects.
In conclusion:
The use of concrete vibrators during concrete placement is not merely an optional step but is crucial to the quality of the structure. Vibrators serve to compact the concrete as thoroughly as possible, ensuring that the structure is strong, durable, and safe.