What disk to cut composite reinforcement. Installation work

How to cut glass.plastic reinforcement?

Cutting with manual scissors for metal (with hydraulics), the so-called “bolom cutters”, which are allowed to be used with a reinforcement diameter of not more than 6-8 mm; use of gas cutter; Cutting the reinforcement using an “angular grinder” (angular grinding machine) with discs on concrete.

• Cut off with reinforcing scissors (bolt cutter);
• chopping off with an ax;
• sprinkling with a hacksaw for metal;
• Cutting an angle grinding machine (corner grinding).

How glass.plastic reinforcement bends?

You can heat fiberglass reinforcement to 200 ° C, but it will not soften. The substance reaches the temperature peak at about 550-600 ° C, and the reinforcement will simply melt. Therefore, bend the rods with the help of tools or a building hair dryer, as is sometimes advised on the network, it is useless and even dangerous.

• Fundamental slabs.
• Ribbon foundations.
• Reinforcement of industrial concrete floors.
• Blinding around the buildings.
• Armopias (seismo.pods) between the floors of brick or block buildings.
• Binder for brickwork.
• Binding for laying walls from blocks/brick, for monolithic walls

Tips for experienced masters

Очки и маска для работы с угловой шлифмашинкой

In the final part of this article, several useful tips are offered to your attention regarding how to cut reinforced concrete.

Респиратор для защиты органов дыхания

Experienced craftsmen recommend adhering to the following rules:

• Gloves for working with corner grindingAs one of the options for cutting reinforcement, a special machine for cutting the reinforcement of industrial manufacturing may be the rental of a special machine. Those who are forced by the family of work constantly engage in such operations are most reasonable to purchase a machine for permanent use.
• Diamond discs can also be used in the dismantling of reinforced concrete structures; In this case, you can cut concrete both in the presence of water cooling and “dry”.
• When working with cutting mechanisms, you need to worry in advance that there are protection products (special gloves, respirator, glasses or mask). It is also allowed to use conventional gas masks.
• We should not forget about the observance of special safety measures when working with an electric tool.

Reinforcement technology

When reinforcing various types of foundations, rods of reinforcement with a diameter of 0.8 cm are used.

When performing installation with your own hands, you should adhere to the following sequence:

• When installing the formwork, its parts are wrapped in parchment paper to use them several times;
• Using a horizontal level on the details of the formwork, marking is made to which a concrete solution will be poured. This is necessary for the uniform distribution of the concrete composition around the entire perimeter of the foundation;
• Elements of glass.airmator to strengthen any types of foundations are covered with a mixture with a thickness of more than 5 cm. To do this, you can also apply bricks that should be laid on the bottom of the structure;
• Several rows of fiberglass reinforcement are placed on a number of bricks. Whole rods should be used with lack of joints. To calculate the required length of the rod, you must first measure the length of each side of the future foundation. Based on these values, you can rewind or cut off the rods of the required length;
• After laying the longitudinal row of rods, they proceed to strengthen the transverse jumpers with plastic clamps;
• make the upper part of the frame, which exactly repeats the lower part. The size of one cell is about 15 cm. Both levels are fixed with vertical jumpers;
• After knitting the reinforcing frame, the process of filling the concrete composition begins. Experts recommend using M400 concrete.

A competent calculation of fiberglass reinforcement will allow you to avoid unnecessary costs and additional problems due to the lack of reinforcing rods and purchase the right amount of product. The calculation for the foundations of the strip and slab is to determine the length and number of rods, based on the area of ​​the foundation and the step of the reinforcing grid

It must be taken into account that the plate should have two reinforcing belts: lower and upper ones, which are fixed with vertical rods around the entire perimeter of the plate. The process of reinforcing the column foundation is different

Ribbed reinforcement is strengthened vertically, and smooth. horizontally. For the frame, 3-4 rods are needed, their length is equal to the height of the pillar. For a large diameter pillars, a larger number of rods will be needed, and more than 4 horizontal rods are needed for one pillar.

The concrete solution hardens about 3 weeks. At this time, you need to protect the surface of the flooded foundation with polyethylene from moisture. In sunny weather, it is recommended to spray the surface with water.

Most professionals claim that when laying gas and foam blocks, angles should be reinforced using metal valves. Such a combination will give building structures even greater strength, stability and reliability. Often there are disputes about the need to knit glass.airmator with plastic clamps. Knit should be knitted to strengthen the reinforcing frame before pouring concrete mixture until the composition is completely dry. After the surface is hardened, it does not matter whether the frame is connected or not.

In the video below you can see a review about fiberglass reinforcement for the foundation.

Cutting fiberglast reinforcement boltoresis.

Pros of cutting fiberglass reinforcement boltoresis

Cons of cutting fiberglass reinforcement boltoresis

-a small amount of rods with simultaneous crushes (2-3 maximum);. quite large labor costs during work;. Boltoresis is not a very common tool in the farm with a narrow sector of use, and buying it only for these works is impractical.

The main cutting options

Work with a hacksaw for metal when preparing the material on how to cut reinforcement, it was necessary to analyze many recommendations published on the pages of Internet forums on this topic. The results of the study were reduced, ultimately, to the following main cutting options:

• work with a regular manual hacksaw;
• Cutting with manual scissors for metal (with hydraulics), the so-called “bolom cutters”, which are allowed to be used with a reinforcement diameter of not more than 6-8 mm;
• use of gas cutter;
• Cutting the reinforcement using an “angular grinder” (angular grinding machine) with discs on concrete.

Manual hacksaw

Some forum visitors even offer to use powerful hydraulic scissors, which are equipped with rescue services.

Characteristics of the material

The reinforcement made from composite materials, depending on the continuous reinforcing filler used for its manufacture, is divided into several categories:

• glass.composite, which is indicated by the abbreviation ASK;
• carbon dioxide, indicated by ak;
• combined or acc;
• and a number of other categories.

Physico-mechanical parameters of polymer reinforcement of various types

When choosing composite reinforcement to strengthen the foundation or walls of the constructed building structures, its main characteristics should be taken into account:

• the limiting temperature at which this reinforcement can be effectively operated;
• The strength of the product measured during stretching; This parameter is calculated as the ratio of the attached force to the cross.sectional area of ​​the reinforcing bar, for the products of the ASK category, it should be at least 800 MPa, and for the AC reinforcement. at least 1400 MPa;
• elasticity module for stretching; in carbon dioxide, this indicator exceeds the similar characteristic of fiberglass products by more than 2.5 times;
• The strength of the product is measured during compression; For all types of composite reinforcement, this indicator should be at least 300 MPa;
• The strength of the reinforcement is measured during the transverse cut; For various types of composite reinforcement, this indicator should be: for ASK reinforcement. 150 MPa or more; For AUK. more than 350 MPa.

Armature made of metal or composite materials?

When deciding which reinforcement to use to strengthen the foundation or walls of the building, the characteristics of traditional metal products and fiberglass should be compared. Compared to metal, fiberglass reinforcement has the following advantages:

• Exceptional resistance to corrosion: the foundation, for the strengthening of which composite reinforcement is used, is not terrible interaction with acid, salty and alkaline media;
• Possessing low thermal conductivity, fiberglass reinforcement does not create cold bridges, which is especially relevant for the operation of buildings in the climatic conditions of our country;
• The materials used for the manufacture of fiberglass reinforcement are dielectrics, so the foundations and walls, to strengthen which it is used, have absolute transparency for radio and electromagnetic waves;
• The weight of composite reinforcement is much lower than the mass of products made of metal; the strength of the reinforcing rods made of fiberglass is almost 2-3 times higher than that of the reinforcement made of metal;
• Due to the fact that the composite reinforcement is supplied to the customer in bays at 100-150 meters, when strengthening the foundation with its use, it is possible to minimize the number of docking joints, which, as you know, are the weakest places in any concrete structure;
• The acquisition of composite reinforcement is more economically beneficial due to the fact that you can buy exactly the volume that you need to strengthen the foundation or walls of your structure, without focusing on the fixed length of the rods, as in the case of metal products;
• The coefficient of thermal expansion of composite materials is almost identical with a similar concrete parameter, therefore, in the designs for the reinforcement of which they are used, there are practically no cracks.

When compared in cost, then the costs of the use of metal and fiberglass products are almost the same.

Comparison of metal and fiberglass reinforcement (click to increase)

The most significant disadvantage of the reinforcement made of fiberglass is a fairly low indicator of its strength at the curtain, which limits its use to strengthen heavily loaded concrete structures.

How can you cut fiberglass reinforcement?

Composite glass.plastic reinforcement is a material that can be cut in different ways. Such reinforcement is often used in construction in both abroad. One of the main methods of cutting fiberglass reinforcement are:

• Cut off with reinforcing scissors (bolt cutter);
• chopping off with an ax;
• sprinkling with a hacksaw for metal;
• Cutting an angle grinding machine (corner grinding).

Choosing the best option of all of the above, it is worth giving preference to a corner grinder with a detachable circle. As for all other options, the first 2 are bad for cutting the reinforcement, as they will have a great influence on the adjacent parts of the material, deforming its edges. Cutting with an ax, the use of bolt cutter or hacksaw for metal can leave almost inconspicuous cracks in the material, which will go deep into the body of the reinforcement.

Important! Cracks that have arisen in the process of sawing or cutting off, become channels into which water and alkali falls. When water enters the microcracks, there is a probability of increasing cracks in size. This is due to the process of freezing and thawing. In addition, the alkali, which is contained in concrete, penetrates the rod inside and destroys the reinforcement from the inside. Thus, the best way to cut fiberglass reinforcement is using a corner grinder. This tool minimally damages the edges of the material, while the pruning process will be as fast as possible. You can buy composite reinforcement and in the region right now with the help of our site. The price of our reinforcement will pleasantly please you.

note! If you are going to cut fiberglass reinforcement, it is worth taking care of protecting the eyes, limbs and respiratory organs. It is worth remembering that in the process of cutting fibers, dust can be created, which negatively affects the respiratory system of a person. In this case, it is necessary to use a respirator. Pay attention to him to fit well. Pay attention also to protect the hands and body. Thin fibers of basalt or other materials can easily penetrate under the skin during operation. You can protect against this with gloves that have a continuous layer of PVF and latex.

To the question: where I will buy high.quality materials for construction, we offer profitable solutions at affordable prices.

Reinforcement cutting tool

How best to cut fittings depends on their diameter and class. The smaller they are, the easier it is to cope with the metal rod.

Therefore, for cutting the A-1 reinforcement (with a diameter of 10-12 mm), ordinary bolt cutters are also suitable (they are also called enhancing scissors or reinforcing nipples). With their help, you can easily cope with a small number of rods, because the force you use is increasing due to the action of systems with two levers in them.

“Grinding machine” is more suitable for cutting thicker and stronger fittings. Its main advantages (light weight and power) allow you to work quickly, and since it can be used to cut fitting where there is a place and there are no combustible materials nearby, it is the masters who usually prefer.

Read alteration of the charger of an electrical screwdriver for lithium

Another option is a special guillotine for reinforcement (for example, Edma Rodcut 0659). This device greatly facilitates the process of cutting reinforcement for segments of a certain length. However, the guillotine is quite expensive, so it is usually bought by specialized companies, and not lovers to build something with their own hands.

You can also use a special machine for cutting fittings, which greatly simplifies and simplifies the entire process.

Recommendations for the installation of fiberglass reinforcement

Work with fiberglass reinforcement is almost the same as working with metal reinforcement, and does not require special skills and knowledge. These are the same reinforcing bars, but not metal, but composite ones, they are much easier than metal, respectively, the installation of fiberglass reinforcement will be faster and easier, which significantly reduces labor costs.

Boltorez

Before using boltores for cutting composite reinforcement, you should also study the pros and cons of working with this tool. You need to understand that boltores does not cut the composite bar, but rather bites it, which affects the technical characteristics of the material.

Advantages with boltores:

• No power connection is needed;
• When working, boltores is not formed by a large number of small particles, so the rods can be prepared to size in the room;
• Having boltores in your hand, you can move and work anywhere (without wires).

Disadvantages The use of cutting bolts:

• With the help of boltores, you can not cut more than three bars at the same time;
• When working with this tool, it is necessary to use significant muscle efforts;
• Bolt cutters rarely fall into the list of household tools. For work, you will have to rent or purchase it, which is economically impractical;
• The use of boltores causes deformation of the material at the site of the section (material crumbs and longitudinal cracks appear at the end of the rod). This deformation reduces the bearing capacity of the reinforcement and reduces its service life.

Kryazuvka for metal

If you need to make only a few incisions, you can use a regular metal hacksaw.

Using a hand tool gives the following advantages:

• Each owner has a hacksaw for metal. This is the easiest and cheapest way to cut a small amount of rods to tie the reinforcing cage;
• Lack of spraying small particles, as in the case of angular grinding machines.

Negative moments of using a hacksaw for metal for cutting composite reinforcement:

• Low speed of work;
• A large load on the employee, if it is necessary to perform a large amount of work;
• Use only in individual construction with small volumes of work.

Reinforcement cutting tool

What is the best to cut reinforcement, depends on its diameter and class. The smaller they are, the easier it is to cope with the metal rod.

Therefore, for cutting the A-1 reinforcement (up to 10-12 mm in diameter), ordinary bolt cutters are also suitable (they are also called reinforcing scissors or reinforcing nippers). With their help, you can easily cope with a small number of rods, since the effort you do increases due to the work of the double lever system in them.

We advise reading: how to make a foundation for a garage with your own hands. instructions with calculations, photos and videos

For cutting thicker and durable reinforcement, “corner grinding” is more suitable. Its main advantages (low weight and power) allow you to work quickly, and since you can cut the reinforcement with its help everywhere there is a place and there is no control of combustible materials, it is it that masters usually prefer it.

Another option is a special guillotine for reinforcement (for example, Edma Rodcut 0659). Such a device greatly facilitates the process of cutting the reinforcement into segments of a certain length. True, the guillotine costs quite expensive, so specialized companies usually purchase it, and not lovers to build something with their own hands.

You can also use a special machine for cutting reinforcement, which greatly facilitates and simplifies the whole process.

The procedure for calculating building structures with composite reinforcing materials

The process of calculating structures in which composite reinforcement is used can be demonstrated by the example of calculating the work of the beam, where steel reinforcement D12 mm is used.

Such reinforcing rods A500C, having a diameter of 12 millimeters, have such characteristics as:

• The value of the elasticity module at the level of 200 GPa;
• 500 MPa normative resistance indicators, which is slightly smaller than the strength parameters used in the manufacture of these rods.

Based on these data, the estimated maximum load on the rod is 4.5 tons. With such a load, the reinforcement stretching parameters reached 2.5 mm/m

In the documentation going along with fiberglass reinforcement, there is always a sign of its correspondence with steel reinforcing rods.

So, the reinforcement made of fiberglass, to comply with the parameters of the steel A500C with a diameter of 12 mm, should have a diameter of 10 mm.

In other words, the process of calculating buildings from plastic rods is completely similar to calculations with steel, the only difference is the application of the correspondence table.

How to cut fiberglass reinforcement?

On the one hand, if we talk just about all possible options, then composite fiberglass reinforcement can be cut in different ways:

• Bite with a bolt cutter;
• Cut off an ax;
• Cut with a hacksaw for metal;
• Cut an angle grinding machine (“corner grinding”).

But the most correct option of all listed above is the use of “corner grinding” with ordinary abrasive or diamond circle. The fact is that the first two methods cause a strong impact on the adjacent areas of the reinforcing rod, leading to its deformation, painting and splitting in these areas. Thus, the adjacent ends of the reinforcing rod will be very split, approximately, as shown in the photo on the right (click on it for viewing in full). Do not be alarmed, in fact, a segment of composite reinforcement is depicted in this photo, destroyed as a result of the compression test, but the nature of the destruction of the edge in the form of longitudinal cracking is the same as when sniffing the composite reinforcement or cutting with an ax. Such breakdown is extremely undesirable, since the resulting cracks can be invisible to the naked eye, but to go quite deeply into the body of a reinforcing rod. Such cracks in the body of the core of composite reinforcement will be capillary channels to get into the water rod, alkalis when pouring concrete. In the first case, there is a danger of further development of cracks due to the cycles of freezing and thawing. In the second case, the destructive effect of the alkaline environment of concrete on the reinforcing rod is aggravated (now this effect is not only outside, but also from the inside).

We draw your attention to the fact that before cutting fiberglass reinforcement. take care of protecting the eyes, hands and respiratory organs. over, pay special attention to the latter! Do not forget that you are going to cut glass or basalt fibers and the dust formed will be a completely unnecessary guest in your lungs! You can protect yourself from this dust using a respirator. But remember that the respirator should fit tightly to the face, excluding the possibility of inhalation of dust bypassing the filter element.

To protect the hands from thin, almost invisible splinter in the form of glass or basalt fibers, having a thickness comparable to the thickness of the human hair, to use ordinary x/w gloves is not suitable! You will need the so.called “awake” gloves or at least m/a gloves with a continuous layer of PVC or latex applied to their inside.