A concrete vibrator is a tool that is used to help consolidate concrete. It removes air pockets, resulting in a stronger and more stable concrete. Its main components are a head, a whip and a motor.
If you're wondering which type of vibrator to choose for your concrete project, it's important to understand the various options available. They're all designed for different applications. The three types of vibrators are surface, internal and external. While surface vibrators are ideal for compacting large concrete slabs, they're not always effective when working on smaller areas.
When using internal vibrators, be sure to place them at regular intervals throughout the concrete. This will enable the concrete to consolidate in its center. It's best to withdraw the vibrator slowly after using it, so as not to damage the concrete. If it remains in the concrete for too long, it can cause water separation from the cement.
External vibrators are more powerful than internal ones, and should only be used for applications where the rebar is too heavy. If you do have to use an external one, make sure to place it in a designated area. If you leave the vibrator in the concrete too long, the water can separate and weaken the structure.
When choosing a vibrator, consider its size, frequency and amplitude. These are all factors that will determine the vibration radius. Usually, a maximum of one inch per second is considered the perfect rate.