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High cycle generation concrete vibrator

27Jun

High cycle generation concrete vibrator adopts the high cycle motor, always be used vertically. Concrete in walls and columns are placed in lifts of various depths, usually 12” to 24”.

Concrete-Vibrators.jpg

There are some requirements for operating the concrete vibrator as follows:
Before using a vibrator, check for proper operation and VPMs using a simple hand tachometer (wire-type.) It is good practice always to have a spare vibrator on the job.
Vibrate the first lift with the head all the way to the bottom of the form as the vibration force extends laterally from the head, not below the tip of the head.
Place the vibrator into the highest levels of concrete first, and when a fairly even surface is obtained, insert it at regular intervals (1½ times the radius of influence) for consolidation.
Observe the vibration action on the surface to calculate the radius, and place accordingly to create an overlap; it is better to err on the side of more overlap than not enough.
Vibrate with the head totally submerged in the concrete, maintaining consistency of spacing and vibration time.
Keep the vibrator stationary for 5 to 15 seconds depending on the mix and the force of the vibrator. Less time will not allow for proper consolidation or entrapped air to escape; too much can cause segregation, sand streaks and/ or loss of entrained air. The surface should be covered with a thin sheet of paste (mortar) and air bubbles should no longer rise to the surface.
Pull the vibrator slowly out of the mix so concrete can fill in behind the head. When placing the next lift, insert the vibrator at least 6" into the previous lift to stitch the layers together—this eliminates cold joints.
Never use vibrators to spread concrete and always stay 2" away from form faces and bottom slabs

High cycle generation concrete vibrator includes electric motors, gasoline engine, flex shafts from 2ft. To 21ft. and heads from 7/8” to 2 and 3/8”.


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