Why are forced-action concrete mixers needed: advantages and disadvantages, making them yourself

The quality and effectiveness of your project can be greatly impacted by the tools you use when working with concrete. Forced-action concrete mixers are special among these tools because of their special advantages and features. These devices mix concrete more thoroughly and consistently than traditional drum mixers, which is essential for many construction tasks.

In order to ensure that every component of the mixture is evenly combined, forced-action concrete mixers mix materials using a rotating drum and stationary paddles. By lowering the possibility of concrete irregularities, this technique produces stronger and longer-lasting outcomes. Furthermore, these mixers come in handy when working with specialty concretes that demand a precise mix or have a high additive content.

Owning a forced-action concrete mixer does have some disadvantages, though. Compared to other mixer types, they are typically heavier and more expensive, so small-scale projects or do-it-yourselfers may find them unsuitable. In spite of this, the advantages over time frequently surpass the expenses, particularly for experts who require dependable and superior concrete for their operations.

Building a forced-action concrete mixer at home can be a fun project for people who like challenges. You can make a custom mixer that meets your needs with a few simple materials and mechanical know-how. This not only saves costs but also enables customization to meet your specific needs. Building your own tool can be incredibly satisfying, even though it does require some work and knowledge.

You can decide if forced-action concrete mixers are the best option for your construction needs by being aware of the benefits and drawbacks of these machines. These mixers provide a strong means of producing concrete of superior quality, regardless of whether you plan to buy one or construct your own.

Advantages Disadvantages
Uniform mix quality Higher cost
Suitable for high-strength concrete Requires more maintenance
Efficient mixing of large volumes Bulkier and heavier
Better handling of stiff mixes More complex to operate
Can mix various materials Consumes more power

For larger or more complicated projects in particular, forced-action concrete mixers are indispensable tools for guaranteeing consistent, high-quality concrete mixes. They have a number of benefits, including increased homogeneity, mixing efficiency, and adaptability to different mix compositions, such as those containing larger aggregates or unique additives. But compared to more basic models, these mixers can be more expensive and might need more maintenance. Building a forced-action concrete mixer yourself can be a cheap fix for do-it-yourselfers, but it does require careful attention to detail and a solid understanding of mechanics.

Areas of use of concrete mixers

Concrete mixers are useful tools for preparing a wide range of solutions that are used in various construction and repair tasks.

One option for a forced concrete mixer is:

  • For preparing concrete of all grades
  • In the process of preparing a solution with high fire-resistant characteristics for the construction of stove and fireplace structures
  • For mixing simple solutions for internal and external finishing works, various adhesives
  • For effective mixing of components that strengthen concrete structures
  • In the preparation of solutions used in the field of metallurgy, casting, chemical production

Both very thick and liquid mixtures work well with a forced-type concrete mixer, regardless of the prepared solution’s density.

Features of the device and operation

Certain mechanisms and components are standard on equipment used in the production of concrete. They must all be as specified in the drawings, be of high quality, and be correctly put together and connected.

Full set of concrete mixer with forced action:

  • Electric motor that rotates the blades
  • A cylindrical or conical bulb is a container in which concrete components are mixed
  • Paddles – wrap the mixture
  • Fixed drum-axle
  • Special shaft for blades
  • A lid or hatch on the container – allows you to avoid leakage of the solution when wrapping, prolongs the hardening time of unused concrete

The forced-action concrete mixer works on the straightforward principle of pouring all of the ingredients into a bulb container to mix the concrete. The electric motor is turned on and the unit is connected to the electrical grid (usually by pressing a button). The blades operate by rotating in an even circle, mixing the solution to the correct consistency. One hand is sufficient to complete the task.

Advantages of forced concrete mixers

The benefits of a forced action concrete mixer are numerous. The gadget is inexpensive to operate if done yourself, is straightforward and easy to use, and doesn’t require any special skills.

Principal benefits of utilizing the device:

  • Ideal quality of mixing of individual components, even when combining materials of different structures in complex ratios
  • Quick production of a high-quality solution of the required consistency
  • High level of safety during operation
  • Impossibility of overspending the solution due to the constant flow of the mixture from the bulb container
  • Long service life (provided that the blades are equipped with protective rubber scrapers)
  • Minimum labor and time costs, easy maintenance
  • A forced-action concrete mixer can work even in the most difficult conditions of a construction site

Manufacturing a concrete mixer

A forced-action concrete mixer requires specific parts and tools, as well as patience and blueprints, to assemble by hand. You will need an electric drill, a welding machine, and a grinder to assemble the unit.

Main design details

  • Electric motor – any old car in normal condition will do. The rotation speed should be at least 1500 rpm, it is better to take motors with a power of 220 kW.
  • Container for the solution – you can take any barrel made of plastic or metal, a tank of the required volume. 100-200 liters is enough.
  • Rotating blades – they can be made from a solid steel sheet or the remaining material from a metal structure. For self-assembly, instead of blades, an ordinary cross made of a metal pipe or rod is also allowed.
  • Drive shaft – a pipe or metal rod is suitable as it.
  • Bearings
  • Frame
  • Fasteners – steel angles, channels, scraps of reinforcement, etc.d.

Preparation

The future forced concrete mixer is first depicted in drawings. It is wise to keep in mind a few prerequisites and subtleties. As a result, the container must meet a minimum 3 millimeter thickness requirement for the material used in the walls and bottom. You must ascertain the engine power, drive type, and shaft orientation while doing preliminary calculations.

Determine the unit’s total weight and choose the corner width for the frame based on that result. A device that fixes the engine at the bottom and arranges the shaft and mixing components vertically is thought to be simpler than one that does so horizontally. Drawings of an obligatory combination of forced action can be completed on their own or by looking up information online.

Assembly of the mixer with a horizontal location of the drum

Start by putting together a frame with metal corners. The two identical triangle method is the simplest. Since the design will ultimately weigh a significant amount, the welded corners serve as an axis with wheels on the one hand. One triangle will be somewhat smaller if the wheels need to be positioned, in line with the wheel’s radius.

Next, welding is attached to the gearbox installation on one side of the triangle, and the axis with the two brackets welded to the gearbox is then attached to the frame. The barrel crashes’ sidewall is fixed into the frame. For easier unloading of the completed solution, the drum can be fixed with welding or allowed to rotate around its axis. Since the design in this instance also has to consider the drum’s reliable fixation during operation, it is more complicated.

Create a platform for the engine in the lower zone of the frame, bolt it in place, and then weld the axle—which will be used to mix the building mixtures—to the blades. A belt that drives the drive must be used to connect the engine and gearbox; the pulleys of both mechanisms must be in the same vertical plane. That’s all; all you have to do now is observe the forced concrete mixer in action to ensure that it fulfills its designated duties.

Assembling a concrete mixer with a vertical drum

The unit has a distinctly different design. This kind of forced concrete mixer requires a specific sequence of steps to be followed.

How to construct a vertical drum concrete mixer:

  • Take a barrel, cut off the bottom and neck so that there is a hole for the axle. Weld 4 corners to the barrel to create a support. Strengthen the lower part of the legs with jumpers, which will act as a base for the engine platform and gearbox.
  • Install the shaft in the tank, firmly fix it at least at 2 points (you can make it so that the axis is held by a bearing).
  • Weld the blades to the body of the working shaft – they will mix the concrete.
  • Make a platform in the lower part for installing other mechanisms.
  • Installation of the engine and gearbox, putting the drive belt on the pulleys. It is advisable to think over the belt tension control system in advance.

In the construction industry, forced-action concrete mixers are incredibly useful tools. When compared to conventional drum mixers, they provide better mixing capabilities. Their layout guarantees even and complete mixing of the components for concrete, producing a mix of superior quality. For projects requiring accuracy and durability, like foundations and structural components, this consistency is essential.

Forcible-action mixers have a few disadvantages in addition to their many benefits. Compared to drum mixers, they are typically more costly and complicated, requiring a larger initial investment as well as more ongoing maintenance. This might not be the most economical choice for small-scale projects or sporadic use. Nonetheless, the advantages frequently outweigh these expenses for professional or large-scale operations.

As long as you have the right tools and materials, building a forced-action mixer yourself can be a satisfying and economical project. It can be customized to meet particular requirements and serve as an educational tool. It is a difficult task for people without experience in construction or engineering, though, as it calls for a solid grasp of mechanics and access to the right tools.

All things considered, forced-action concrete mixers are necessary to produce high-quality concrete mixes in challenging building projects. For professionals, their efficiency and consistency make them a worthwhile investment, even though they have a higher price tag and require more maintenance. Although it has its own set of difficulties, building one can be an exciting project for do-it-yourselfers.

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Dmitry Sokolov

Chief engineer in a large construction company. I have extensive experience in managing construction projects and implementing modern technologies.

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