CORRECT CONCRETE COMPACTION

 🎬 CORRECT CONCRETE COMPACTION (POKER VIBRATOR)

Concrete compaction is a very important step in ensuring that the concrete becomes strong, heavy and free of air pockets after being poured into the form.

This work is done using a device called a Poker Vibrator.

The poker vibrator is inserted into the concrete by standing vertically and at a distance of no more than 40 centimeters from one place to another.

⚠️ Important Things to Consider When Compacting Concrete

✅ Make sure the head of the machine is standing vertically (vertical) at all times during compaction.

✅ Do not rush this exercise. Follow the line or specific arrangement you have planned so that the entire area receives an even distribution.

✅ If you are pouring concrete in layers, make sure when compacting you reach the bottom concrete to properly connect the layers.

✅ Do not use the machine to move the concrete from one place to another. This is not the job of the vibrator.

 ✅ Do not use a vibrator on the top of the concrete, as this will cause an uneven vibration in the concrete.

✅ Insert and remove the vibrator slowly, not quickly.

⏱️ Correct Compaction Time

For concrete with normal water content (slump of approximately 80mm) and using a poker with a diameter of 25–75mm:

🕒 The correct compaction time is between 5 and 15 seconds per section.

Pressing for too short a time does not remove all the air.

Pressing for too long causes the gravel to sink to the bottom and the concrete to remain on top (segregation).

🎯 Purpose of Compacting Concrete

To remove air trapped in the concrete

To increase the cohesion of the gravel, sand and cement

To increase the strength of the concrete after drying

To prevent cracks and premature weakening of structures

🧠 Remember

Good concrete does not only come from the correct mix ratio,

but also from the way it is worked after pouring.

 Improper compaction = Strong concrete = Strong building.

📣 A good house is built by a good craftsman.

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