A poker vibrator consist of an electric weight encased in a housing and may be driven by an electric or pneumatic motor or a petrol or diesel engine. Our poker diameters come in 36 & 60 mm.
Poker Vibrator – 36mm/60mm
Description
A poker vibrator should be used as follows
- Insert the vibrator quickly, and when compaction is complete, remove it slowly to avoid leaving a hole in the concrete.
- Compaction is complete when the surface of the concrete gets a water sheen and air bubbles no longer break through it.
- Concrete must be placed in layers and the tip of the poker must penetrate the layer below to knit the concrete.
- The poker must be inserted at regular intervals in both directions. Points of insertion should be no more than 10 times the diameter of the poker.
- Where void formers occur, concrete should be placed and compacted from one side until it has flowed under the obstruction.
- The poker must not touch the formwork.
- Slump of concrete for compacting by means of a poker vibrator is normally between 50 to 125 mm.
Below is an excellent example of a poker vibrator, as well as the drive unit in action:
