POINTS TO CONSIDER WHEN USING A VIBRATOR

POINTS TO CONSIDER WHEN USING A VIBRATOR

1) The vibrator should be used after the concrete is spread with a shovel. If concrete is transported with the vibrator, segregation occurs.

2) In shear walls and columns, concrete should be compacted in 50 cm layers.

3) Immersion vibrators should not be brought close to the formwork surface. Otherwise, surfaces nailed to the formwork and sandy patches will form.

4) Prolonged contact of the vibrator with reinforcement should be avoided. Otherwise, very watery and weak cement paste forms around the reinforcement, and bond strength weakens.

5) Vibration should be stopped as soon as water appears on the surface. Otherwise, cracks will occur on the surface, or the 2-4 cm layer beneath the upper surface separates from the main concrete mass under the crusts.

6) The vibrator should be inserted into the concrete as vertically as possible and withdrawn vertically.

7) The vibrator should be inserted very slowly and withdrawn very slowly from the concrete; otherwise, semi-holes will remain.

8) Neighboring concrete of already placed concrete should not be disturbed during vibration.