Recomendations Of Use Of Concrete Vibrator - ENAR PNU Serie Manual De Instrucciones

4.- The warranty will be void if any equipment has been previously handled by personnel outside of
ENARCO, S.A. or not authorized by it.
ENARCO, S.A. reserves the right to modify any part of this manual without prior notice.
NB:
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RECOMENDATIONS OF USE OF CONCRETE VIBRATOR

1.
distance among the reinforcement and the slump cone. It is recommendable to have an additional
concrete vibrator.
2.
the equipment of safety and protection.
3.
as levelled as possible. The thickness of every layer should be less than 50 cm, it is recomendable
between 30 and 50 cm.
4.
the vibrator to push the concrete horizontally. The concrete vibrator should be introduced into the
mass at regular intervals. The interval should be from 8 to 10 times the diameter of the poker. See
the concrete in the process of vibrating to determine the field of action of the vibrator. This field
should be overlapped to avoid areas without vibrating. To obtain an optimum compacting of the
concrete, plunge it 10 cm into the precedent layer to assure a good adherence. The vibrating time of
the different layers should not be too long to avoid cold joints. Do not push or force the vibrator into
the mass, it could get stuck in the reinforcements.
5.
other factors. This time can be from 5 to 15 seconds after the immersion in each point. The time is
shorter for a fluid mass, a vibration in excess can produce segregation. It is considered the concrete
is well vibrated when the surface around the poker is shiny and compact and there is no more air
bubbles. Besides, a change in the noise of the vibrator is produced. Many defects in structures are
produced due to the perform of the vibration has been made in an unmethodically way and/or in a
hurry.
6.
from the walls.
7.
fills the empty space again. The speed of removing the poker from the concrete must be
approximately 8 cm per second. When the vibrator is nearly out, extract quickly to avoid shaking the
surface.
8.
concrete mass is bigger and the compacting effect is better.
9.
vibrating stop it.
10. Follow the maintenance instructions.
The concrete has to be carefully prepared to get the best effects of the vibration in terms of
consistency and resistance.
PNEUMATIC POKERS
PNU 25, PNU 40, PNU 50, PNU 60, PNU 80, PNU100
Choose the type of vibrator suitable to the dimensions of the structure to be vibrated, the
Before starting, check that the concrete vibrator is in good condition and it works correctly. Use
Pour the concrete in the structure avoiding doing it from high heights. Try to pour the concrete
Introduce the vibrator vertically in the concrete mass without moving it horizontally. Do not use
The time of vibration for each point depends on the type of concrete, the size of the vibrator and
Do not push or force the vibrator against the reinforcement. Keep a distance of 7cm minimum
Always remove the poker vertically with movements upwards and downwards so the concrete
In order to vibrate slabs, the poker has to be kept oblique so that the contact surface with the
Do not keep the concrete vibrator out of the concrete for long periods. If you do not continue
en
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