Concrete Vibrators

Description: Vibration has long been an effective tool to assist the consolidation and finishing of poured concrete. Internal (immersed) and external (attached to form) vibrators are two ways to transfer the vibrational energy to the concrete.

In general, internal vibration is used for cast-in-place operations and external vibration is used for precast operations. However, there are exceptions.

High frequency (10,000 to 12,000 vpm), low amplitude vibration is more effective on higher "slump" (higher moisture) concrete while just the opposite (3,000 to 4,000 vpm) is true of very low slump and no slump concrete.

External Concrete Vibrators

PNEUMATIC CONCRETE VIBRATORS

External concrete vibrators are available in both air and electric models. Most precast operations using higher slump concrete favor pneumatic roller type concrete vibrators because of the high frequency, lighter weight and reliability.

MODELS:

• Extra Heavy Duty Roller Vibrator - This vibrator type has been the workhorse of the precast concrete industry for decades. High centrifugal force plus high frequency, reliability and low cost make it an excellent choice when precasting bridge beams, wall panels,single and double "T"s, and all kinds of architectural shapes. This vibrator type is also used extensively for tunnel form vibration and cast-in-place wall panels and columns when the forms are designed to accept external vibration.
  

VRH Series

VRHB Series (4 Bolt Base Mount)

• Turbine Vibrator - The turbine vibrator is the next generation air vibrator for the concrete industry. Designed with an unbalanced internal turbine wheel, this vibrator offers lighter weight, no lubrication, quieter operation, and tolerates dirty air. The TCL series uses the industry standard cradle lug bracket for mounting, and the TV-X series uses bolt on mounting.
  

TCL Series

TV-X Series

RECOMMENDATION:  These high frequency air vibrators are reliable, portable and ideal for attachment to forms in the precast concrete and refractory industries. Ask for recommendations on the size, number, location and mounting of these vibrators.

Rotary electric vibrators are 90% more energy efficient than comparable air vibrators and are the quietest vibrator available. Because most electric vibrator models in the 3000 to 4000 vpm frequency range are heavier than comparable air models, electric vibrators are used more on non-portable applications such as vibrating tables.

For portable electric vibrators with reduced weight, see the U1 series vibrators which produce higher force output due to the higher frequency.

MODELS:

• 3600 RPM Vibrator
  

VE3-3600 Series (230-460/3/60)
VE1-3600 Series (115/1/60)

• Portable Concrete Form Brackets - Form brackets use a male and female wedge system to provide a fast, wrench-free way to move a midsize air or electric vibrator between mounts. Brackets are available to accept a piston, roller, turbine, or rotary electric vibrator.

A-05 Series

Vibrator and bracket sold separately. Piston vibrator shown but also available with several other vibrator types.