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عربىAir bubbles and air pockets are one of the most common problems in concrete. These tiny air pockets make concrete weaker and more likely to have structural failures when it hardens.
Using a plug-in concrete vibrator is an effective way to eliminate these air bubbles and improve the quality of your concrete. When a concrete vibrator is inserted into the concrete, it vigorously shakes the concrete to reduce these air pockets.
When choosing the correct vibrator for your job, be sure to consider frequency, power and size.
Internal Vibrators (also known as immersion, poker or needle vibrators) are the most common type of vibrator construction professionals use on concrete forming projects. Their design, size, weight and maneuverability make them a very practical means of vibration for concrete consolidation.
A key element of using an internal vibrator is proper placement and insertion technique. The vibrator head should be inserted quickly all the way to the bottom of each lift and left there for 5 to 15 seconds before it is slowly withdrawn.
Once the initial lift is completed, repeat this process for each following lift and make sure to overlap the previous insertion by 6 inches. This is important to help minimize the chances of pour lines and cold joints from forming up between previous lifts.
It is also very important to withdraw the vibrator slowly, not too fast, so as to eliminate all of the air pockets. This will keep the water from separateing and causing damage to your finished concrete.
