Dust-free and noise-free concrete cutting

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Is it possible to cut concrete without noise and dust?

Modern equipment allows you to quickly and accurately cut almost any concrete structure into “stars”. These are special manual or stationary electric machines equipped with diamond tools: discs, chains and crowns.

  • Is there a technology for cutting concrete without noise and dust?
  • Cutting concrete with hand tools
  • Concrete cutting with wall saws
  • Concrete cutting with floor saws
  • Cutting concrete with ropes
  • It is important to know!

dust-free, concrete, cutting

Cutting concrete with hand tools

  • No or minimal water consumption;
  • Low power consumption;
  • Requires a 220 V AC network and the ability to fill a 15 liter container with water;
  • Scope – lightly reinforced load-bearing walls and partitions with a thickness of 70-400 millimeters.

Cutting concrete with ropes

  • With the help of a special rope with diamond core bits and a drive, it is possible to cut concrete structures without limiting the thickness, including cutting concrete columns;
  • Requires a 380V network and a supply of running water under excess pressure;
  • The cost of work is influenced by: the thickness of the structure, the type of building material and the type of opening (holes).
  • The minimum noise level is created, the minimum amount of dust is formed;
  • Wire cutting is characterized as high-speed cutting of an opening with perfectly smooth edges of any configuration, including in conditions of a limited approach.

Is there a technology for cutting concrete without noise and dust?

Silent cutting of concrete is a marketing ploy of construction companies. Moreover, in addition to noise and dust, some types of concrete cutting are accompanied by water, which cools the cutting tool from overheating..

Cutting concrete, like cutting any hard material, is the mechanical action of a rotating tool. When cutting concrete, there is no impact noise, but there is noise generated by the electric motors of the tool drive and noise from the tool itself, cutting a groove in the concrete and cutting the reinforcing bars.

By default, concrete cutting is divided into “hand”, “machine”, “dry” (without water cooling of the tool) and “wet” (with water cooling of the tool). Regardless of the cutting technology, work is accompanied by a significant emission of dust, noise from disassembled pieces of concrete and noise from a disc, crown or cutting chain.

Thus, cutting concrete without noise and dust with existing equipment and tools is impossible! This also applies to drilling concrete..

Basic methods for cutting concrete:

  • Diamond cutting of walls and partitions with hand tools:
  • Diamond cutting with a stationary wall saw;
  • Diamond cutting with floor saws;
  • Wire cutting.

Concrete cutting with floor saws

  • Two types of powerful, productive equipment are used: electric and gasoline. The second type is characterized as “non-volatile”, therefore, it is usually used where there is no AC network: in open areas, in the field and for cutting expansion joints in the asphalt concrete pavement of highways and sidewalks;
  • Pressurized cooling water supply is required;
  • It is necessary to provide for the possibility of supply and exhaust ventilation of closed rooms (for gasoline devices);
  • A 380V AC connection is required (for electrical equipment).

Concrete cutting with wall saws

  • Diamond cutting with a wall saw is characterized by high productivity and significant cutting depth, therefore it is recommended for industrial cutting of openings, hatches and other elements in heavily reinforced monolithic concrete structures: walls, partitions and floor slabs in a short time;
  • Requires unilateral free access from 300-350 millimeters;
  • Considering the high consumption of cooling water (10-15 l / min), it is required to be able to quickly replenish its water supplies (connection to the water supply);
  • It is possible to collect waste water with a standard vacuum cleaner;
  • Requires 380V and 32A alternating current.

It is important to know!

  • Due to the danger of flooding the lower floors, cutting concrete with wall saws is not used or is very limitedly used in multi-storey panel buildings, as well as in conditions of limited space and with small cutting volumes;
  • It is possible to reduce the noise load on neighbors by cutting openings in parts. For a standard opening, this is at least 6 parts. At the same time, you need to know that in this case the cost of work increases sharply and is in direct proportion to the number of pieces of concrete cut out;
  • Any openings and openings in the supporting structures must be carried out by certified companies that are in the ranks of the Self-Regulatory Organizations;

To legalize openings and hatches in load-bearing walls, you will need to submit the following documents to the state authorities of Russia: a contract for work, a copy of the SRO permit, an act of hidden work reinforcing the structure, an extract from the work log, a state act issued in accordance with the established procedure by a contractor.

Cutting concrete along the mowing line

Once the concrete angle grinder has been prepared, work can begin..

  • The line of the cut is outlined. At the same time, it is advisable to fix wood bars along the mowing line, which will allow the cut line to be made more even;
  • The angle grinder turns on and a cut is made approximately 5 to 10 mm deep;
  • Bars are removed;
  • The cut is made to the required depth. If the incision is made dry, the procedure should be interrupted periodically to allow the instrument to cool down..

The video shows how the concrete is cut correctly with all the details. The process is best done with tool cooling..

  • A conventional spray bottle sprays water directly onto the furrow to reduce dust;
  • Water is sprayed directly onto the disc, in the absence of a power source nearby. This will reduce heating of the diamond discs and extend their service life;
  • If it is not possible to spray liquid onto the disc, air cooling can be performed. Periodically, the circle should be removed from the cut and given the opportunity to work in air.

If you have questions about cutting concrete, if you want to know how concrete is polished, an angle grinder and other details on using similar equipment, introduce the video in this article.

Safety engineering

Such a dust extraction system does not imply any major structural changes in the device angle grinder.

We just attached the pipe to the body of the instrument..

And the second part of the casing was closed with masking tape, this element can create a false impression of security.

How to cut without dust 2

Masking tape is only designed to protect against dust.

Therefore, it is necessary to comply with all safety measures when working with an angle grinder.

Features of working with an angle grinder

An angle grinder for cutting concrete is an essential tool, but it can also cause injury. This requires following the operating rules when working with the equipment..

These include:

  • Work should be carried out only in a sober state and in good health;
  • Before starting work, it is recommended to prepare such devices and protective equipment:
  • A face mask or goggles to prevent sparks from entering the face, especially eyes;
  • Vacuum cleaner or respirator;
  • Gloves, preferably thick or genuine leather mittens;
  • Protective clothing that covers all parts of the body;
  • Nozzles that are allowed to use the instructions for the equipment;
  • Headphones.
  • A cover that fits between the instrument and the person.

All of these items will keep the worker safe when cutting concrete..

Concrete cutting with floor saws

  • Two types of powerful, productive equipment are used: electric and gasoline. The second type is characterized as “non-volatile”, therefore, it is usually used where there is no AC network: in open areas, in the field and for cutting expansion joints in the asphalt concrete pavement of highways and sidewalks;
  • Pressurized cooling water supply is required;
  • It is necessary to provide for the possibility of supply and exhaust ventilation of closed rooms (for gasoline devices);
  • A 380V AC connection is required (for electrical equipment).

Dust-free concrete cutting: how to saw an angle grinder with your own hands, a tool

Cutting concrete without dust is practically impossible, since in the process of sawing and processing stone, one way or another, a lot of dust appears, the volume of which can only be reduced. But it is also advisable to do this, since too much dust in the process of performing work brings a lot of troubles: it spoils the tool and blunts parts, settles in the lungs and on all surfaces in the room.

With the use of modern equipment, it has become easier to cut concrete – there are special cutting tools, consumables for them. Devices can be hand-held or stationary, powered by electricity or other sources. As a rule, all concrete cutting tools are equipped with diamond parts – chains, discs, crowns, brazing, etc..

Tips for cutting dust-free concrete

During repair or construction, sometimes it is required to carry out work on concrete: cut out an opening for a window, a niche, and gouge walls for wiring. The craftsmen know how many small particles are formed in this case. Cleaning after such events is a very laborious task. We offer you to figure out whether it is possible to cut concrete without dust and how to organize this process.

Concrete cutting with wall saws

Wall saws are used to cut concrete on larger scale and demanding jobs. Less dust than an angle grinder, much higher productivity and efficiency.

Features of cutting a concrete monolith with a wall saw:

  • Diamond cutting of this type is characterized by a large cutting depth, therefore it is used for industrial cutting of hatches / openings, other elements with heavy reinforcement in partitions, walls, floor slabs. Works are carried out in the shortest possible time.
  • To accomplish the task, you need to provide free one-way access from 30-35 centimeters.
  • It takes a lot of water for cooling (up to 15 liters per minute), so it should be possible to replenish stocks.
  • Waste water can be collected with a standard vacuum cleaner.
  • To operate the equipment, you need an alternating current network with a capacity of 32A and a voltage of 380V.

Concrete cutting with floor saws

Seam cutters are also often used for tasks of this kind. There are some features that it is advisable to study.

Key features of concrete cutting with a floor saw:

  • Usually one of two types of productive equipment is used – gasoline / electric. The latter option requires a connection to the network, gasoline units can be used anywhere (in the field, in open areas, to create expansion joints in the road surface, etc.).
  • It is necessary to provide a supply of cooling water at a high pressure, which will eliminate the risk of overheating and reduce the volume of dust.
  • For gasoline devices, it is important to ensure the possibility of ventilation of the supply and exhaust type, if work is carried out in a closed room.
  • Electrical equipment will need a 380V AC connection.

Cutting concrete with ropes

  • With the help of a special rope with diamond core bits and a drive, it is possible to cut concrete structures without limiting the thickness, including cutting concrete columns;
  • Requires a 380V network and a supply of running water under excess pressure;
  • The cost of work is influenced by: the thickness of the structure, the type of building material and the type of opening (holes).
  • The minimum noise level is created, the minimum amount of dust is formed;
  • Wire cutting is characterized as high-speed cutting of an opening with perfectly smooth edges of any configuration, including in conditions of a limited approach.

How to choose the right contractor for diamond cutting work?

On

The following recommendations will help you not to be mistaken with workers:

The best parameter when choosing is the recommendations of friends.

Having chosen an artist, you should play it safe and check:

  • company registration as a legal entity faces;
  • permits;
  • the time the company was founded;
  • experience;
  • volume of work performed;
  • absence of unscrupulous suppliers in the register;
  • other parameters.

How to make a casing for a vacuum cleaner with your own hands

An angle grinder with a built-in vacuum cleaner allows you to get rid of the small particles of material formed during the cutting process of the “angle grinder”. But what if there is a need to cut concrete with an ordinary tool without additional options? The simplest solution would be to purchase a casing for a vacuum cleaner separately or to make a device yourself. You can attract an assistant who will collect the particles formed during the sawing with a vacuum cleaner.

It is easy to make a convenient attachment from a simple plastic canister, which is often used to sell a car “anti-freeze”. For work, you will need a construction cutter and a container of a suitable size, the neck of which will fit in diameter to the vacuum cleaner hose.

The manufacturing sequence is as follows:

  • Fitting holes are cut on both sides so that you can easily change the direction of rotation of the disc.
  • A slot of a suitable size is made under the circle.
  • Another hole is cut to attach the “angle grinder” cutter.
  • The hose is docked with the neck of the canister and secured with an adapter ring with a clamp.
  • “Angle grinder” is placed in the casing and all elements are connected.
  • Cover the unused opening with a lid.

A good dust collector can also be obtained from a simple five-liter plastic bottle. It is attached using a standard protective cover, and the vacuum cleaner nozzle to the neck. This design is suitable for any kind of work, with the exception of chasing..

One final tip: in order to make the cut straight, the markings are first applied. Then wooden blocks are fixed along the mowing line. After that, a shallow incision up to 1 cm is made, the limiters are removed and the work continues. Throughout the entire process, coolant is supplied to the blade of the disc. All manipulations must be carried out in goggles, a respirator and gloves..

Cutting concrete with ropes

This method is used less often than all of the above, but is also relevant when performing certain work..

How concrete is cut using special ropes:

  • To accomplish the task, a special rope and diamond bits are used, as well as a drive. You can cut any structure without limitation in thickness (including columns, for example).
  • For optimal operation of the equipment, it is imperative to ensure the supply of cold water under high pressure and a network with a voltage of 380V.
  • The cost of work can be different and depends on such factors: the type of material, the type and size of the opening, the thickness of the structure.
  • When using this method, a minimum amount of dust appears, and the noise is also small..
  • Wire cutting allows you to quickly cut openings of any configuration with perfectly straight edges, even where access is limited.

Noise and dust-free concrete cutting

It is important to know

Modern manufacturers offer a variety of equipment models, so it will not be difficult to find a specific model of equipment in the regions (as well as companies or specialists who will quickly and efficiently carry out the work). But you need to remember some of the nuances..

Things to keep in mind when cutting concrete:

  • Wall saws are not used in multi-storey panel-type buildings because of the risk of flooding the lower floors with water. Also, the machine is not suitable for working in a confined space, if necessary, perform small volumes of cut.
  • To reduce noise, you can cut openings in parts (at least 6 parts). In this case, the price of work rises and depends on the number of cut pieces..
  • All holes / openings in the supporting structures are made only by certified companies and in strict accordance with the rules.
  • Legalization of hatches / openings in load-bearing walls requires an appeal to state authorities with the provision of a full package of documents.

Dust-free concrete cutting is a complex task that can only be partially achieved. It is very difficult to completely get rid of dust, but its amount can be significantly reduced thanks to the correct choice of equipment and nozzles, the cutting method, as well as the use of a construction vacuum cleaner and the creation of special devices for collecting dust.

What materials can be used with diamond discs?

According to the Mohs Geological Hardness Scale, diamond is ranked as the tenth highest material. To understand what this means, it is worth comparing diamond with other hard materials. Locksmiths know about the impeccable hardness of a metal file that can sharpen anything you need. However, on the Mohs scale, it only ranks seventh. It is not difficult to understand that with diamond cutting, the file is easy to cut.

The tool can easily handle:

  • with fittings;
  • concrete;
  • brick;
  • asphalt;
  • stone;
  • gas silicate.

Cost from 900 rubles. / 100 mm

Price from 1100 rubles. / 100 mm

Cost from 800 rubles. / 100 mm

Cost from 800 rubles. / 100 mm

Cost from 800 rubles. / 100 mm

How to cut without dust