8 Best Concrete Vibrator 2021 (Reviews)

Best concrete vibrator. In today’s world, a homeowner can do their construction job. They do not have to be a professional! You can take part in small-scale construction jobs for your home.

With the proper equipment, devices, and tools, the home construction job can be easy to do.

A concrete vibrator is one device you should own when building a mansion with a reliable and sturdy foundation! There are several concrete vibrators available on the market.

Which one to choose might be confusing without proper knowledge. Take your time to read this article and make the right investment.


What is a concrete vibrator?

A concrete vibrator is a device (mechanical) for creating a vibration or shaking or quivering wet concrete. On one end, there is a motor that has to be held or placed on the ground.

It is equipped with a long thick neck connecting the vibrating head to be submerged down into the wet concrete. The shaking motion causes the mixture of wet concrete to liquefy.

The motion reduces the friction of mixed components of water, cement, and aggregate. This motion allows the mix to circulate or shift more easily in the form of concrete.

The purpose

The purpose is to get enough concrete into every cranny and nook and eliminates voids. These vibrations and liquefication will let the air bubbles to escape.

Too much air in the wet concrete will result in a less dense mixture that can lead to blemishes and failures. This liquification process also brings moisture to the surface for more effortless floating or finishing of the slab.

The vibration of concrete is vital to achieving the concrete mix’s consolidation for a homogenous concrete. If the vibration is improper, a honeycombing (defect) occurs.

If the concrete were not fluid enough, it would not flow through to all corners. The right balance of segregation, viscosity, and fluidity resistance is essential for SCC’s success.


Types of concrete vibrator

Rebar shaker

Rebar (reinforcement bar) shaker a type of concrete vibrator alternative to concrete vibration techniques. The technology is like a regular vibrator, but the rebar shaker device is slipped over the reinforcing bar’s top.

Then, it transmits or shakes the vibration into the wet concrete. The benefits of rebar shaker are reducing clean-up and saving man-hour.

This tool can be found in different diameters and shorten the time to pour the wet concrete into a very tight space or a cell.

Surface Vibrator

Surface vibrators will be placed on the surface of the concrete that has been poured in place. The tool works well when the concrete height is in flat slabs or less than ten-inches.

The perfect mix is a low water to cement ratio, and the tool is recommended to use on shallow slabs or structures. This surface vibrator is for patching a surface or pouring a slab.

A surface vibrator is not suitable for large volumes of concrete or when the slab is too thick.

External vibrator

External vibrators are attached to the formwork at particular points that will consider the thickness of the concrete. The points are located regarding the concrete mass.

External vibrator will give a direct vibration effect on the concrete and formwork. The vibrator will use significant power.

The tool will consolidate wet concrete in the range of 18-inches away from the formwork. These tools have particular applications, including small pours that need a minimal amount of vibration.

Immersion vibrator

Immersion vibrators or an internal vibrator are used in a general construction project. They are also known as stingers or spuds.

This rotary type vibrator has a head or casing containing an unbalanced weight. The casing is called the eccentric.

The eccentric is immersed in the wet concrete. It is turned at high speed, causing the casing or head to revolve in a tiny orbit, which subjects the concrete to vibratory motion.

Internal or immersion vibrator has the eccentric turned by an electric motor. Some models are gas-powered, compressed air, or using a hydraulic pump.


Main components of concrete vibrator

  • Head – the part that vibrates the concrete
  • Driving shaft – the drive-unit that drives the flexible shaft
  • Flexible drive-shaft – drives the pendulum inside the head that creates an excentrical movement
  • Electrical drive-unit – the motor unit that is connected to the flexible drive shaft

The benefits of concrete vibrator

Using a concrete vibrator to shake or vibrate concrete can assist concrete during its settling for long-term durability. Air bubbles could be trapped when wet concrete is poured within the mixture.

The air bubbles create cavities or honeycomb-like spaces. If the honeycomb is not resolved, it can affect the cement’s longevity and strength.

A vibration can force the trapped air out of the mixture to the surface, leaving the concrete a more level and compact slab. Air bubbles will surface from the mixture when the vibrator is being used correctly.


The vibration failure or imperfection

Bugholes

The quality in the surface look to a prominent position within the concrete is very important. Bugholes can affect the appearance which there are surface voids.

Surface voids are the result of the movement of entrapped air to the wet and fresh concrete. During consolidation, the new concrete’s density and volume shrinkage create entrapped air voids and excess water.

The water excess tends to move upward to the surface due to a density differential and transform into bleed water. The air bubbles will find the nearest route.

Bugholes are seen more frequently on the surface of the concrete structure or at angled form surfaces. Problems can occur if the concrete surface is to be painted. Another problem will be if the voids reach a diameter greater than 1 inch.

The most potential cause of bugholes is improper vibration. A proper vibration sends entrapped air and excess water to the surface.

The formation of the material can also cause bugholes. Polymer impregnated steel and wood and the use of form-releasing agents can prohibit movement of the air voids.

Honeycombs

Honeycomb is the term used to describe areas of the concrete surface that are stony and coarse. Honeycomb may be caused by insufficient fine material in the mix of concrete.

Aggregate grading or inadequate mixing is the most common cause by increasing the mixture’s cement and sand content and by proper compaction, mixing, and placing.

Honeycomb may also be caused by mortar fraction from the concrete at construction or leakage of the grout. The best solution is to make sure that joints are well-sealed and leak-free.

Small areas of the honeycomb are mainly just cosmetic. Deeper areas of honeycomb will lead to a reduction in concrete cover and durability problems in the future.

Cold joints

Cold joints are formed between two concrete where the second batch’s placement and delivery have been delayed. The first concrete has started to set at this time.

To knit together the two batches of concrete, a vibration is needed to form a homogeneous mass. Cold joints that form in hardened concrete are no gaps in the concrete.

It just lines between two batches that contain a void structure. They are closely bonded and joined. There could be a danger of small voids in areas where the concrete is not fully compacted.


How long does it take to vibrate concrete?

Most concrete is improperly vibrated or under-vibrated. The best way to vibrate internally is to slowly withdraw the vibrator at a rate of around 1-inch per second.

As long as air bubbles still emerge to the surface as the concrete vibrator is withdrawn, more vibration is needed and necessary. It is recommended that contractors do not urge workers to complete this job quickly.

That is the real problem. The result can be a failure after the concrete hardened. If you hold the concrete vibrator for too long in the fresh concrete, the water and material will separate. This will also create strength and aesthetics issues.


Safety instruction

  • Regular maintenance and servicing is a must to promote safety while operating the concrete vibrator.
  • Carefully read the safety instruction.
  • Do not clean the concrete vibrator with a high-pressure cleaner.
  • Before you connect the concrete vibrator to the mains voltage, make sure that the mains voltage is similar to the rating plate’s technical specifications.
  • Make sure that the operator or user is familiar with the current regulations for cable and plug connections.
  • Always wear protective gear.

Vibration procedures

  • Before using a concrete vibrator, check for proper operation and VPMs using a simple wire-type hand tachometer.
  • It is always excellent practice to have a spare concrete vibrator on the job.
  • Concrete in columns and walls are placed in lifts of various depths, usually, 12-inch to 24-inch. Vibrate the first lift with the head to the bottom of the form as the vibration force extends laterally from the head, not below the head’s tip. The vibrator must always be used vertically.
  • Place the concrete vibrator into the highest levels of fresh concrete first. When an even surface is obtained, insert it at regular intervals (1½ times the radius of influence) for consolidation.
  • Observe the vibration motion on the concrete’s surface to calculate the radius and place properly to create an overlap; it is better to err on the side of more overlap than not enough.
  • Vibrate with the head submerged in the concrete, maintaining consistency of spacing and vibration time.
  • Keep the vibrator stationary for five to fifteen seconds, depending on the mix and the force of the vibrator. Less time will not allow for proper consolidation or entrapped air to escape; too much can cause segregation, sand streaks, and entrained air loss. The concrete’s surface should be covered with a thin sheet of paste (mortar), and air bubbles should no longer rise to the surface.
  • Pull the vibrator slowly out of the mix concrete can fill in behind the head. When placing the next lift, insert the vibrator at least 6-inch into the previous lift to stitch the layers together to eliminate cold joints.
  • Never use vibrators to spread concrete and always stay 2-inch away from form faces and bottom slabs.

Frequently asked questions

When should you vibrate concrete?

The vibration times will vary depending on the size of the concrete vibrator used, the concrete’s workability, and the concrete’s depth. An insertion time of five to fifteen seconds will provide adequate consolidation.

Does vibrating concrete make it stronger?

The more air bubbles in the fresh concrete, the weaker the structural integrity when the concrete hardens. A concrete vibrator can help produces stronger concrete. Shaking the fresh concrete right after you pour the mix can eliminate the air bubbles.


Factors to consider when purchasing a concrete vibrator

Battery or electric motor

If you want your concrete vibrator to be portable, a battery-operated concrete vibrator is a right choice. You do not need an electric supply when operating the vibrator.

You will need a long power cord and possibly an extra extension cord when you decide to purchase electric-powered concrete vibrators.

The motor

The power of the motor can determine the efficiency of the operation. It is recommended to choose a high VPM motor. The higher the VPM, the more efficient the operation.

The VPM (vibration per minute)

The vibrations per minute (or VPM) is an essential factor that can determine the speed of the concrete vibrator. The VPM of the head, the faster and the less time it can take to eliminate bubbles, excess of water and moisture, and bubbles from the wet concrete.

The lowest VPM for efficient work is 12,000 VPM. If you are working on a bridge or medium-size construction project, you might want to choose a concrete vibrator with 16,000 VPM at the least.


8 top concrete vibrator comparison chart

Model  Speed Price Rating Link
1. BIZOEPRO Hand Held Electric Concrete Vibrator Remove Air Bubbles 16,000 VPM $$ 5.0 Buy At Amazon
2. BEAMNOVA Electric Concrete Vibrator Hand Held 11000VPM 2HP 16,000 VPM $$ 4.7 Buy At Amazon
3. Makita XRV01T 5.0 Ah 18V LXT Lithium-Ion Cordless Concrete Vibrator Kit 13,000 VPM $$$ 4.5 Buy At Amazon
4. Seeutek Hand Held Electric Concrete Vibrator 16,000 RPM $$ 4.1 Buy At Amazon
5. Chicago Electric 3/4 HP Concrete Vibrator 13,000 VPM 13,000 VPM $$ 4.1 Buy At Amazon
6. GlobMarble Concrete Vibrator for Concrete Vibrating Table 2,840 RPM $$ 4.1 Buy At Amazon
7. Mophorn 1100W Hand Held Electric Concrete Vibrator 16,000 VPM 1.5HP 16,000 VPM $$ 3.3 Buy At Amazon
8. USA PRO 1.5 HP Electric Handheld High Speed Concrete Vibrator With 60-inch x 35 millimeter Shaft Needle 12,000 RPM $$ 2.4 Buy At Amazon

4 best concrete vibrator reviews

1. Seeutek Hand Held Electric Concrete Vibrator

Concrete Vibrator

This concrete vibrator weighs only 42 pounds so that you will have less fatigue. The head can vibrate and gains speed to up to 16,000 RPM.

With such power, the concrete vibrator can help concrete settle quickly and remove air bubbles. The excess water and air bubble can be removed to settle the concrete solidly and adequately.

The good thing about this concrete vibrator that it can help improve your work efficiency and enlarge work range with its shaft length up to 4.5 meters or about 14-3/4 feet with a 1.5″ in diameter head.

A 1,100-watt electric motor that has a protective metal roll cage is running the vibrator. If the vibrator can not operate, it is recommended to knock the vibrating bar on the ground a few times until it works.

These Seeutek concrete vibrator products are providing a 100% satisfaction guarantee or your money back.

  • 110 volt – 60 Hz – 1,100 watt
  • 4.5 meters or about 14-3/4 feet with a 1.5″ in diameter head
  • 1,600 RPM
  • button switch
  • metal build case
  • more thread
  • high-temperature forged flag

2. BIZOEPRO Hand Held Electric Concrete Vibrator Remove Air Bubbles

Concrete Vibrator

This concrete vibrator can be used for high-rise building foundation pouring piles, dense steel mesh concrete walls, bridge construction, port construction, large or small dams, and hydroelectric power plants. The device can deliver substantial impermeability, good compactness, and fewer air bubbles.

It is an essential tool to make sure and enhance the quality of various concrete construction. The BIZOEPRO Handheld Electric Concrete Vibrator is ideal for repairing, patching, and construction, with a powerful vibration frequency of over 16,000 vibrations per minute.

This device weighs only 18 kilograms or 40 pounds to help concrete settle faster, allow for less fatigue and removes air bubbles. When the working temperature is too high or the rod core is working abnormally, the temperature protection device will start automatically.

The normal operation can continue after the temperature is back to normal. Its temperature protection devices can help the device achieve prolonged life-span usage and increase its reliability.

a durable and reliable metal roll cage that is ideal for more work environments is protecting the unit. There is a sealed dust button switch design that will help prevent dust from penetrating the machine.

The switch is moisture-proof and safer to use. The cord is high-quality made. Vibrating shaft links threaded interface, high-strength gear, and metalhead assembly to settle faster is completing this vibrator.

  • 110 volt – 60 Hz – 1,500 watt
  • 16,000 RPM
  • length of vibrating shaft: 4.5 meters or 14-3/4 feet with 1.5″ or 38-millimeter diameter head
  • roll cage design
  • temperature protection design
  • push button switch
  • carbon brush replacement

3. BEAMNOVA Electric Concrete Vibrator

Concrete Vibrator

The BEAMNOVA concrete vibrator is a powerful concrete vibrator that boasts a 110 volt – 60 Hz – 1,500-watt electric motor. Its vibrating head can gain speeds up to 11,000 RPM.

Its length of the vibrator shaft is up to 14-3/4 and 1-1/2 diameter. The measurement of the vibrator shaft helps to improve work efficiency and widen your work range.

The excess water and air trapped inside the wet concrete can be removed when you begin immersing the head in the concrete vibrator—allowing the concrete to settle within the formwork solidly and adequately.

The vibrator unit is protected by metal-built to prevent any cement or dust from penetrating. It is lightweight, durable, and rugged. The 1-1/2 inch head can be inserted into concrete via gaps or small holes.

The 14-3/4 feet vibrator shaft can extend farther and deeper into the wet concrete. You can utilize this device for a construction job, patching, pouring process of cement pillars, construction of highway fence, and construction of a bridge.

  • 110 volt – 60 Hz – 1,500-watt electric motor
  • 14-3/4 and 1-1/2 diameter vibrator shaft
  • 11,000 RPM
  • button switch with dust cover
  • non-scrolling metal-built case

4. Mophorn 1,100 Watt Hand Held Electric Concrete Vibrator

Concrete Vibrator

This Mophorn 1,100 watt – 4.5 meter – 38-millimeter concrete vibrator is very suitable for repairing, patching, and construction. The vibration frequency can go up to 16,000 RPM.

With such speed, the device can help remove air bubbles and helps concrete settle faster. It is lightweight, and the design is compact for consistent use.

The Concrete Vibrator allows for less fatigue, and vibrating head gains speeds up to 16,000 RPM. Lightweight and easy to use. Our motor is set on a rectangular steel frame with screws. It has a protective metal roll cage, safer while using it.

Immerse the head into wet concrete, and it will release any trapped air and excess water. After that, it will allow the wet concrete to settle within the formwork solidly and adequately.

  • 1,100 watt – 110 volt
  • 4.5 meter – 38-millimeter head
  • 14-3/4 and 1-1/2 diameter vibrator shaft
  • 16,000 RPM
  • rectangular steel frame
  • protective metal roll cage

8 Best Concrete Vibrator 2021 (Reviews)
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