SQ28 PRO
Concrete vibrator SQ28 PRO
Drives out air for dense, void-free pours.
View details5-minute training
5 minHow to use the concrete vibrator
Vibration drives out trapped air and makes concrete dense and free of honeycombing. Good vibration is the line between a sound structure and a porous one.
Training video
Coming soonIn the meantime, follow the step-by-step guide.
- 01
Right head
Pick the head diameter for the element: small for columns and walls, large for slabs and footings.
- 02
Insert vertical and fast
Plunge the head vertically and fast, ~15 cm into the layer below to knit the lifts together.
- 03
Hold 5–15 seconds per point
Vibrate until paste rises and large bubbles stop. Longer than that segregates the aggregate.
- 04
Withdraw slowly
Pull the head out slowly so the hole closes itself. Yank it and you leave an air channel.
- 05
Even, close spacing
Repeat on an even grid, spacing points ~1.5× the action radius. Leave no un-vibrated zones.
Do this
- Always insert vertically, on systematic points.
- Use the vibrator to densify, not to move concrete around.
- On walls, vibrate lift by lift as you pour.
Avoid this
- Don't drag concrete with the head: you segregate the aggregate.
- Don't over-vibrate: water and paste rise, aggregate sinks.
- Don't ride the rebar or formwork continuously with the head.
Safety
- Rubber gloves and boots; you're in fresh concrete.
- Mind the cable (electric) or hot exhaust (gasoline).
- Don't force the hose into sharp bends.
Test yourself
Got it down?
Self-check
Each practice: do it or avoid it? Tap your answer.
On walls, vibrate lift by lift as you pour.
Always insert vertically, on systematic points.
Use the vibrator to densify, not to move concrete around.
Don't over-vibrate: water and paste rise, aggregate sinks.
Don't ride the rebar or formwork continuously with the head.
Don't drag concrete with the head: you segregate the aggregate.
Equipment in this training
Apply it on these machines
SQMG28
Backpack concrete vibrator SQMG28 PRO
Drives out air for dense, void-free pours.
View details
SQVEH40
Concrete vibrator SQVEH40
Drives out air for dense, void-free pours.
View details
Electric mini concrete vibrator
Handheld electric vibrator with flexible shaft, for columns and small pours.
View detailsReady for a quote?
Tell us about the job and we'll build the package. Same-day reply.