Cutting concrete grinder. determination of the type of

When performing various construction works, it may be necessary to cut concrete. Since this material is very durable, this procedure has a number of nuances. In this article we will look at how to cut concrete with a grinder.

Instruments

So, to perform this operation, first of all, you need an angle grinder for concrete, which is popularly called Bulgarian. As a nozzle, you need to use a special diamond wheel on concrete for the grinder.

I must say that they exist of several types:

• Segmented;
• Turbo diamond;
• Turbo-diamond with wave housing.

Segmented circles are not the best solution, because when cutting them, certain problems may arise, which is connected with their segmented edges. But, but the advantage is the low price compared to other types of nozzles.

Turbo-diamond discs with a wave housing will allow cutting with the greatest load, for example, when it is necessary to cut reinforced concrete. Of course, this type of nozzle is the most expensive.

Совет! Cutting железобетона алмазными кругами выполняется вначале на глубину около одного сантиметра. Если проблем с болгаркой или диском при этом не обнаружена, то процедуру продолжают. Каждый последующий рез должен быть не глубже полутора сантиметров.

Concrete cutting order

Determining the type of concrete

Before you grind concrete with a grinder, you need to determine which type you are dealing with. This is due to the fact that different types of diamond discs are used for each type of material. For example, it can be reinforced with metal rods (reinforced concrete).

If the depth of the cut is about 10 centimeters and deeper, then on “your way” you can stumble upon a metal grid (rebar). As mentioned above, for these purposes there are special wheels.

In addition, it should be noted that over time, the structure of the material changes. Fresh concrete is more abrasive, while older is harder. For this reason, diamond discs for old and fresh material must be different.

If you have time, you can study the structure of the material in more detail, which will allow you to choose the most suitable tool for it. For example, if there is basalt or quartz in the composition, then it will quickly dull the circle. Therefore, the diamond segments must be connected with a soft material so that new diamonds can be “opened up” faster.

It should also be borne in mind that the size of the filler affects the cutting speed - the larger it is, the slower the procedure is.

Tip! Diamond tools are used not only for cutting, but also for other processing of concrete. In particular, diamond drilling of holes in concrete or grinding with diamond disc-cups is often used.

Selection диска

When choosing a disc, keep in mind that segments can be attached to the web in two ways:

• Solder with silver content. Such discs are widely used for wet cutting.
• Laser welded. Such nozzles are characterized by high performance, and, as a rule, are used for dry cutting.

In addition, when choosing a disk, you must make sure that its diameter and the hole for mounting correspond to the specifications of the grinder. Also the important point is the maximum speed. It is desirable that this indicator disk was higher, the maximum speed, which is able to provide Bulgarian.

After all the above parameters are determined, you can choose the most optimal type of tool that will ensure maximum efficiency.

Choosing the type of cutting

There are two types of cutting:

• Wet;
• With water.

As a rule, cutting is performed with water, in which case the procedure takes place without dust. In addition, water can improve work efficiency and increase tool life. Due to the fact that the process can be continuous, the speed of work will increase. (See also the article Shtroborez for aerated concrete: features.)

However, there is not always a source of water near the work area. In this case, the cutting is carried out dry. The dry cutting process must be intermittent, i.e. consisting of several cuts.

Cutting

After the grinder for cutting concrete will be prepared, you can get to work:

• First of all, you need to outline the line along which the incision will be made. It is advisable to fix wooden blocks along the line, which will make the cut lines even.
• Then you need to turn on the grinder with your own hands and make a cut with a depth of about 0.5 - 1 cm.
• Next, remove the bars and make a cut to the desired depth. In the process of work it is necessary to spray water on the blade. If the cutting is done dry, then the procedure, as already mentioned above, must be periodically stopped so that the tool cools down.

Note! Before you begin work, you need to protect the respiratory organs with a respirator. In addition, you should use other personal protective equipment - glasses and gloves.

Here, perhaps, is all the instructions for doing this work.

Selection

By itself, the process of cutting concrete is nothing complicated. The most important thing is to choose the right diamond disc and adhere to certain rules that are given above. In addition, it is necessary to observe safety precautions, since working with power tools always requires special care.

From the video in this article, you can learn some additional information on this topic.