External Vibrator is a tool used to produce vibrations in concrete. This vibration aims to remove air trapped in the concrete, so that the concrete becomes denser and stronger. External vibrator consists of two main parts, namely: The drive unit, which produces vibrations. This drive unit can be an electric motor, hydraulic motor, or pneumatic motor; Vibrating elements, which transmit vibrations from the drive unit to the concrete. These vibrating elements are usually made of steel or rubber.
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