Concrete mixer: How to buy the best in 2021?
In civil construction, it is necessary to mix different materials such as cement, sand and water to achieve the ideal consistency and composition for use. The equipment responsible for this hard work, previously done manually, is the concrete mixer.
In the form of a huge drum that rotates at the proper speed, the concrete mixer is essential in any construction and in many works. Do you know how to choose the best one to solve all your needs? We have prepared an article that brings all the information about this valuable equipment!
First, the most important
- The use of the concrete mixer is very important in civil construction. It mixes ingredients such as cement, sand, stones and water to generate final products such as concrete and mortar.
- Concrete mixers usually have a capacity that varies between 150 and 600 liters. You need to know the size of your work to buy the ideal model.
- With the mixer, your work gains in speed, which prevents delays and can even reduce costs.
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The best mixers: The opinion of the newsroom
There are some very good mixers on the market. Therefore, we have selected some that are reliable and capable of doing an exceptional job to present you. With them, you can’t be disappointed!
- The best concrete mixer
- Ideal for smaller works
- The best cost-benefit
If you came to this article, we think you have a lot of questions about choosing a concrete mixer. But don’t worry: Our buying guide has the answers to all the most common questions about the equipment!
Stay with us and know everything you need about concrete mixers!
What is a concrete mixer and what is it for?
The concrete mixer is a piece of equipment used in civil construction that is shaped like a drum. It has a large capacity, always above 100 liters, and serves to mix fundamental components for a job.
During a work, it is often necessary to mix cement, water, sand, stones and additives to achieve the ideal consistency and composition for what will be done next. All of this is placed in the mixer, which with the correct speed, does all the work after a certain time.
It is possible to choose between mixers with electric or fuel engines, with varying capacities and turns. Recently, companies in the civil construction area have invested in the design of this equipment, aiming to make the mixture more homogeneous and fast.
Did you know that during almost the entire history of mankind, the hard work of mixing components needed for civil construction was done manually? Only in 1900, in the city of Milwaukee, did TL Smith create the first concrete mixer.
Over time, the equipment has evolved greatly, reaching what it is today. Much of this was the responsibility of TL Smith himself, who in 1920 created the largest mixer factory at the time. They were used in many of the major works of the 20th century in the United States.
What are the advantages of a concrete mixer?
The concrete mixer is the main option when it is necessary to mix large quantities of components for a job. Without it, you have to do the process manually, which is hard and time-consuming work, very tiring for workers.
By providing agility and speed in the mixing of components and reducing the fatigue of workers, the concrete mixer makes the chances of the work to be completed on time be greater, further reducing costs and risks.
There are concrete mixers suitable for large or small works, with the capacity variation being the decisive factor. This means that you don’t have to stop having one just because you are involved in small buildings.
Another good possibility is to buy concrete mixers for rent. Since many people embark on works only occasionally, it is not advantageous for them to buy such large and expensive equipment. So, the rental market works at full throttle and you can take advantage of it.
A niche equipment, the concrete mixer is essential in civil construction, but it will rarely be used by people who do not experience this field on a daily basis.
It is also worth mentioning that the concrete mixer is a very large and heavy equipment, which makes life difficult for those who do not have much space for it, nor efficient means of transport.
Check out the advantages and disadvantages of the concrete mixer below:
What are the engine types of the concrete mixers?
The mixing process of components made by the mixer is the work of the equipment’s engine, which works very efficiently.
However, there are concrete mixers with several types of engines available, and this is an important factor when choosing. The main question is to choose between an electric or a fuel motor, but there are also different nomenclatures, such as single-phase and three-phase. What does all this mean?
Fuel engines are rarer. They run on gasoline or diesel, and are recommended for use in construction sites in remote locations, without access to the power grid. They do not have the same power as the electric ones and work less efficiently.
When we talk about electric motors, the choice is between single-phase and three-phase. Almost all electricity supply on the planet is three-phase, since it is much more efficient and economical. As you can imagine, the price is also higher.
We compare below single-phase and three-phase motors for concrete mixers:
What are the minimum specifications for concrete mixers?
How to know exactly what capacity of the concrete mixer you need? When making an investment in equipment like this, you need to be sure that it will do the job.
The bill to be made asks you to know the total footage of the work. A 400 liter capacity concrete mixer has an average productivity of 3.45 liters or cubic meters per hour and can work for 15 hours a day.
These values are sufficient for you to know how long you would produce all the material needed for your work with equipment of this size.
In general, the recommendations are for concrete mixers with a capacity between 125 and 250 liters for small works, 250 liters and 400 liters for medium works, and above that for large constructions.
What can be put in a concrete mixer?
The concrete mixer should only be used for the production of construction materials. Do not attempt to add chemicals or other areas to mix using this equipment.
Who should decide what will go in the mixer and the proportions is the master or engineer.
Among the most common components are cement, sand, water, stones and additives. Who should decide the “recipe” of what will go in the concrete mixer is the construction master or engineer. They have the study and the necessary qualification to know how to make the ideal production for each situation.
Each mixer has specifications related to which materials are accepted. If it is necessary to add special additives or fertilizers to the equipment, you need to know if it is compatible with these extra ingredients.
How to use a concrete mixer?
When using a concrete mixer, it is essential to wear personal protective equipment. Among the most important are glasses, gloves, helmet, boots, ear protectors and long-sleeved clothing.Many accidents involving concrete mixers happen because of electrical discharges. Make sure that there are no bare or unprotected wires and that the equipment is properly grounded before turning it on.
It is important to clean the equipment thoroughly before using it again, leaving no pieces of cement stuck together or remnants of the previous mixture. The recommendation for this cleaning is to use a powerful machine like a high pressure cleaner.
As we mentioned above, who should decide the materials to be used and the proportion is the foreman or engineer. Usually, water is added first, followed by sand and cement. But don’t try to do this without supervision.
To give you an initial idea of how to make concrete using the concrete mixer, we have selected a video from the Do Your Work channel that shows the whole process:
Is it safe to buy a concrete mixer online?
A concrete mixer weighs an average of 250 kilos. It is a huge drum with wires and motor. How to know, then, if it is safe to buy something so big on the internet?
Online purchases must be made in trusted stores, as is the case with Amazon.
It all depends on the company chosen to purchase. If you are a giant of online sales, as is the case with Amazon, you will have security guaranteed. Delivery is made by specialists and all possible care is followed to the letter. Another option is to make the purchase on the websites of the manufacturers themselves.
Avoid buying the concrete mixer from unknown suppliers online or on sites with no guaranteed reputation.
The responsibility for delivery does not stop at the supplier: You need to have a spacious and safe place to receive and store your concrete mixer. There is no point in suggesting the delivery of such large equipment in an apartment, is it not?
How much does it cost and where to buy a concrete mixer?
The price of a concrete mixer varies with the size, capacity and materials used. The simplest models, ideal for small works, cost around R $ 1,200. Equipment indicated for large buildings ranges between R $ 3,000 and R $ 5,000.
If you want to buy the concrete mixer over the internet, buy it on a secure site, Amazon, Amazon. websites. To look in physical stores, places specializing in building materials are the best ideas.
Purchasing criteria: What to consider when choosing a concrete mixer
Now that you know the advantages, ways of using and operating the concrete mixer, purchasing is easier. However, there are still some important technical criteria that we need to discuss. We selected four:
- Mixing speed
- Drum design
Below, we go into more detail about each one!
When reading the specifications of a concrete mixer, you will find two capacity measures: Total and mixing. The first is just how much can be placed inside it and is usually even in the name of the equipment. We talked about this when citing the minimum characteristics for each job.
The mixing capacity, in turn, indicates how much the mixer can produce from the components initially placed in it. There will always be losses, but there are some more efficient models.
In the case of concrete mixers with a total capacity of 400 liters, look for mixing capacity that is around 280 liters. This is an excellent ratio that can also be followed for models of other sizes.
How fast will the mixing of the ingredients placed in the mixer take place? The mixing speed is related to the engine power and the equipment design itself. It is measured in cubic meters per hour for solids and liters per hour for liquids.
The larger the mixer, the greater the production volume and the mixing speed.
It is normal for larger concrete mixers to operate at a higher speed. For models of 200 liters or less, 2.5 cubic meters per hour is an excellent hourly production. When it comes to equipment of 400 liters or more, the ideal is that this number should go over 4.
If your work needs agility, choose a mixer with a faster mixing speed. The number of cycles also influences the total hourly production!
Recently, crushers manufacturers have been working to improve efficiency, quality and speed of production through the design of the drum. Engineering and chemistry discover modern ways of depositing each ingredient at a point in the equipment that will make the transformation process easier.
Check among the manufacturers of your chosen models which are the ones that most invest in technology to make the use of concrete mixers efficient. That way, you will have quality and speed without having to pay more for it, in addition to buying a product from a brand that cares about your work!
When empty, a concrete mixer is already very heavy. It still needs to have enough structure to withstand an enormous amount of cement, water and mixture within itself, which can generate almost a ton in total.
For this reason, it is essential that it is made with quality parts, which give exceptional strength to all parts. This is another factor that shows the importance of choosing trusted brands and that are known for choosing quality materials in the composition of the products.
Clean all concrete mixer structures frequently, including the exterior, to ensure that it continues to function without any problems or risks!
In addition to having to be robust to support the entire weight of the mixture, the concrete mixer must be durable enough to handle the external actions of the sun, rain, mud and other components that may exist.
Check how the manufacturer of the chosen model tries to reduce the force of external attention. Some of the possible applicable technologies are electrostatic painting, which reduces the impacts of ultraviolet radiation, collisions and corrosion by rust, and interlocking, which is important against leaks.
Thus, your concrete mixer will last much longer and be present in construction sites for many years!