Vibrated concrete has been observed to have more strength than the non-vibrated ones. Concrete can be vibrated either internally or externally. Internal vibration is provided by internal vibrators, needle vibrators, etc. External vibration is provided by equipment like table vibrator.
A concrete internal vibrator is a construction tool typically used during concreting. These vibrators are used to remove air voids from fresh concrete in sites immediately after pouring.

Leading manufacturers

• BRECON Vibrationstechnik GmbH
• Chicago Pneumatic
• Fast Verdini Srl
• LIEVERS HOLLAND
• Multiquip, Inc.
• SIRL SA
• SOMAI
• Wacker Neuson SE
• WAMGROUP S.p.A
• WEBER MASCHINENTECHNIK

Types

• Electrical
• Mechanical
• Pneumatic

Few of the commercially available internal vibrators are