Basalt connections for brick. Flexible connections for masonry. Installation of flexible connections for brickwork

RECOMMENDATIONS
on the use of basalt-plastic reinforcement BPA-Galenâ
according to TU 57 1490-002-13101102-2002 in the construction of three-layer brick walls or walls made of other piece materials, monolithic walls with brick cladding.

1. These recommendations are used in the construction of three-layer brick walls or walls made of other piece materials, monolithic walls with brick cladding.
2. The recommendations determine only the use of BPA; the remaining elements of the three-layer structure are designed and built in accordance with current standards.
3. Basalt-plastic reinforcement BPA is used for three-layer brick and other piece materials, monolithic reinforced concrete walls with brick cladding.
4. Main indicators of basalt-plastic reinforcement BPA:
— tensile failure stress ~1000 MPa,
— tensile modulus of elasticity 70000 MPa,
— thermal conductivity coefficient 0.45 W/m2×°C
— diameter 6 mm
5.
To ensure adhesion with the mortar, the BPA reinforcement is made with anchor hooks at the ends, in the form of thickenings of sand on epoxy resin.
For brick walls, the minimum depth for embedding BPA bonds in a mortar joint is interior wall– 90 mm, maximum – 150 mm. The depth of embedding in the mortar joint of the outer wall is 90 mm.
For a monolithic wall with cladding, sealing in load-bearing layer for the length of the dowel, in the facing - 90 mm.
6. For device capability air gap between the insulation and the outer layer of the wall, the basalt plastic reinforcement BPA is equipped with a fixing pressure washer made of polyamide
7. The number of connections per 1 m2 of a blank wall is at least 4 pieces.
8. When insulating brick walls with a mineral wool slab, the pitch of the BPA connections vertically is 500-600 mm (height of the slab), horizontally - 500 mm (see Fig. 1).

When insulating brick walls with polystyrene foam or polyurethane foam, the vertical pitch of the BPA connections is equal to the height of the slab, but not more than 1000 mm, the horizontal pitch is 250 mm, but not more than a step at the rate of 4 pcs./m2 (see Fig. 2).

When insulating monolithic reinforced concrete walls and manufacturing reinforced concrete products the vertical and horizontal spacing of the BPA connections is 500 mm.

1. Additionally, connections are placed around the perimeter of the openings, near expansion joints, at the parapet, in increments of 300 mm and in the corners of the building in accordance with Fig. 3,4,5,6.

1. It is recommended to lay brick walls with thermal insulation made of polystyrene foam and polyurethane foam in the following sequence (see Fig. 7):

10.1 is placed outer layer to the next level of connections,

10.2 the thermal insulation layer is installed (the top should be higher than the outer layer by approximately the height of one row of bricks),

10.3 the inner layer is placed to the level of the following connections,

10.4 they place connections by piercing them through the heat-insulating layer (if the horizontal seams of the outer and inner layers in which the connections are placed do not coincide, then in the inner layer the connections are placed in a vertical seam with careful sealing of the seam with cement-sand mortar),

10.5 are laid one row of bricks in the outer and inner layers.

1. It is recommended to lay brick walls with thermal insulation made of mineral wool boards in the following sequence (see Fig. 8):

11.1 the outer layer is placed up to the next level of connections,

11.2 the inner layer is placed to the level of the following connections,

11.3 the thermal insulation layer is installed,

11.4 the connections are laid on the insulation board (if the horizontal seams of the outer and inner layers in which the connections are placed do not coincide, then in the inner layer the connections are placed in a vertical seam with careful sealing of the seam with cement-sand mortar).

11.5 one row of brick is placed in the outer and inner layers

1. When erecting monolithic walls with subsequent brick cladding, installation is recommended to be performed in the following sequence:

12.1 Holes are drilled in the monolith to the depth of the dowel, into which the connections are hammered until the dowel tip is completely wedged.

12.2 Prick an insulation board onto the free ends of the ties and secure it with clamps, which are snapped into place with pliers.

12.4 The free end of the connection with the sand anchor is embedded in the mortar joint.

brick-rock.rf

What are these fasteners?

Flexible connections for brickwork They are a special corrugated rod. It is produced in lengths from 20 to 60 cm. The flexible connection is designed to ensure effective fastening of the facing material in load-bearing wall through the insulation material. This will create a strong and stable cladding of the building.

The size of the flexible connection depends on design decisions. For structures with a height of up to 12 meters, it is recommended to use a 4 mm product, which can withstand a load of about 900 kg. For buildings with higher heights, a 6 mm bond is required. Moreover, it should not pull out of the seam when there is a load of about 1100 kg.

Design

Flexible connections for brickwork, photos of which can be seen in the article, are rods. They have a round cross-section and thickenings at the ends made of other materials. These elements perform the functions of an anchor during the process of fixation in the masonry seams.

Sand fasteners effectively provide adhesion to mortar. In addition, it will be achieved additional protection walls from the effects of corrosion in the alkaline environment of concrete. To create an air gap in the layers, you must use a snap-on fastener made of plastic.

Features of flexible connections

These products have this name due to their characteristics. The internal walls of the building have a more constant temperature. This is due to the fact that they are not subject to regular external temperature fluctuations. However, the outer facing wall is subject to reverse influences. This layer in summer time capable of heating up to +70 °C, and in winter period freezes to -40 °C. Significant temperature changes lead to the fact that the inner wall remains motionless, and the outer one changes its geometric size.

It is worth noting that flexible connections for brickwork and aerated concrete they bend perfectly. Thanks to this, they are able to maintain the integrity of the structure. The products are not subject to corrosion. They do not break as a result of frequent bending, and also do not create cold bridges due to insufficient heat transfer. The high strength and durability of flexible connections are greater than those of traditional masonry mesh. Consequently, the building as a whole will be more reliable.

Types of products

It is advisable to use flexible connections for brickwork and gas block as a connection. However, it is important to choose the right product. They are divided into two types depending on the material from which these fasteners are made. The first type is ties made from basalt composite materials. An example is Galen products from domestic manufacturer. The second type includes products made of stainless steel, which has a high level corrosion resistance. In this case, it is recommended to use BEVER connections from the German manufacturer of the same name.

The structures must be load-bearing to comply with DIN 1053-1. To do this, it is advisable to use anchors with a bent part, and their length should be more than 25 mm. For these purposes, you can use flexible connections for basalt brickwork with a sand anchor with a length of 9 cm. In the case of installing stainless steel products, it is worth taking connections with a wavy end and a length of 5 cm.

Installation of flexible connections

When using flexible connections for brickwork for cladding, the technology must be followed. Their number and location are determined at the first stage of work - when drawing up design and estimate documentation.

Most often you should use four products for each square meter load-bearing wall. If the walls are insulated using mineral wool slabs, the spacing of flexible connections should be 50 cm both horizontally and vertically. Polyurethane foam and polystyrene foam can also be used in the insulation process. In this case, the horizontal step of the products is 25 cm, but not less than four pieces per square meter. Vertically, you should adhere to an indicator not exceeding 100 cm.

It is worth noting that flexible connections for brickwork must be additionally arranged around the perimeter of the openings. They also need to be installed in each corner of the building in increments of 30 cm near the parapet and at expansion joints. During installation, the minimum required depth of penetration into the load-bearing wall and the facing layer is observed, which is 9 cm.

A situation may occur when the horizontal seams of the outer and inner layers do not match. It is necessary to install ties for the load-bearing wall in a vertical seam using cement-sand mortar to perform a thorough seal.

When following the technology for installing flexible connections, you need to ensure that they do not become loose. Initially, a layer of thermal insulation is installed, after which a flexible connection for the brickwork can be installed. To do this, you need to pierce the insulation board and install it on it. If the insulation is attached to an old product, you should wait until it sets mortar in the seams where connections are installed.

Price

Products of this type have optimal cost for a wide range of consumers. Flexible connection for masonry is budget option, which is able to ensure the reliability of the cladding and the building as a whole, which will lead to significant savings. It is also worth noting that the cost depends on indicators such as quantity, characteristics, manufacturer and material of manufacture. The average price of one product is ten rubles. At the time of buying required quantity parts, significant savings will be achieved.

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Characteristics and types of connections

Selected depending on operating conditions. For buildings up to 12 m high, it is recommended to purchase ties with a diameter of 4 mm; they can withstand a load of 900 kg. For houses larger than 12 m - 6 mm (1100 kg).

• basalt-plastic;
• stainless steel;
• carbon steel;
• fiberglass.

The first type uses most in demand, since it has best characteristics. It has the lowest thermal conductivity coefficient, therefore, unlike steel, it is not able to conduct heat. Basalt-plastic ties will not rust in brick walls. They are resistant to alkalis, which are found in cement mortar. The weight is almost 4 times less than steel ones, due to which they do not create a load on the foundation of the house. Well tolerated high temperatures. For better grip cement mixture both edges are sanded.

Stainless steel rods for brick walls have good elasticity, but unlike the previous ones, they conduct cold, since they are made of metal. In terms of strength, they are 2 times inferior to basalt-plastic ones. Carbon steel fittings have the same specifications, as stainless steel, but you can buy it at a price that is 2 times less. To protect against corrosion, the rods are coated with a zinc layer.

Fiberglass types have a low thermal conductivity coefficient, so they do not form cold bridges. Not to be afraid of high humidity and do not carry out electricity. They have excellent tensile strength, the same as basalt plastic, but less elasticity.

Installation nuances

Install flexible connections for facing bricks You can do it yourself, there are several ways. In the first case, they are fixed in a load-bearing wall, and insulation is put on top, for example, mineral wool. Before installing the slabs, you need to wait until the mortar has completely set so that the rods do not fall out. The second option is to install thermal insulation, after which holes are drilled through it in the supporting base and rods are placed.

Laying technology for an already rebuilt building:

• The base is checked for cracks and other defects. If there are any, then you should cover them yourself with TsPS or a similar composition.
• The wall is treated with primer deep penetration to increase waterproofing properties and strengthen the surface.
• After drying, places in the seams are determined and marks are placed. Holes are drilled for installation.
• The rods are placed.
• Do-it-yourself installation of the cladding begins. When combining brickwork with ties, they are embedded in the mortar.

If the house is just being built, then flexible steel or basalt-plastic rods must be immediately laid in the seams. The disadvantage of this method is the difficulty of bending if the levels of the seams of the finishing and the supporting system do not match.

The diameter of the holes must be equal to the diameter of the ties; only then will they be firmly fixed in the structure. If you do bigger size, then the reinforcement may fall out under load. All rods must be mounted in such a way that the possibility of their loosening is completely eliminated. Minimum installation depth in walls brick house depends on their size; you can find out this parameter from the manufacturer’s instructions. The horizontal distance between them should be at least 50 cm, but not more than 75 cm, and vertically – 50 cm. This step is reduced to 30 cm near windows, doorways, ceilings and corners of the building.

Marking and determining the number of rods

To distinguish between bonds, their brand is indicated on the packaging: on basalt plastic ones the following will be written - BPA-250-6-2P. The marking means: BPA - basalt-plastic reinforcement, 250 - length in mm, 6 - diameter in mm, 2P - both ends of the anchor are treated with sand.

Consumption depends on the area of ​​the walls, the number of windows, corners and doorways. The number of rods must be determined before the cladding begins. If there are not enough of them, the structure may deform during movements, and cracks will appear. On average, at least 4 pieces are required per 1 m2.

For the calculation, take into account the step at which the rods will be located. Their number increases near windows, doorways, ceilings and corners. To find out the consumption of connections for connecting the load-bearing wall with the cladding, you need to know the length and height of the brickwork. Let the structure be 250 cm high, 200 cm long, with a pitch of 50 cm. That is, you need to lay the rods in 5 rows in height and 4 rows along the length of the house. The consumption will be 5*4=20 pieces. This method allows you to find only an approximate quantity.

Calculations made independently should be checked again. The number is also influenced climatic conditions and the condition of the building. The exact consumption can only be determined experienced specialist when inspecting the building. If the house is located in an area where people often visit strong winds, then reinforcement is laid much more often than for an object located under normal conditions.

The cost of flexible ties depends on the material from which they are made and the size. The greater the distance between the cladding and the supporting base, the longer the rods are needed, which means the greater the financial costs.

Thanks to the creation of such a wall, the interior ceases to be exposed to external influences. The microclimate in the house improves and heat loss decreases. This helps to significantly change the appearance of the entire structure.

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What are flexible connections?

Finishing buildings with facing bricks is used quite often. It is performed both during the construction of new houses and during the repair of old buildings. Most often, the walls are insulated at the same time.

The multilayer system in this case consists of:

• Supporting structure;
• Layer thermal insulation material;
• Air gap;
• Facing part of the facade.

Brick cladding that is not attached to the supporting structure can quite easily collapse from mechanical stress or under own weight. Flexible connections for facing brickwork successfully solve this problem.

These elements are manufactured in the form of rods round section made of metal or composite.

Composite materials

Composite materials are becoming increasingly in demand in the construction industry. One of the areas where they are successfully used is flexible connections for bricklaying.

The products are round rods made of basalt plastic treated with sand. They are anchors for reliable fixation of brickwork. Designed for reliable and quick connection of the load-bearing and facing layers of masonry.

The use of composite materials has its pros and cons.

Advantages and disadvantages

Composite reinforcing products have many positive aspects in their application:

• They are light in weight, which creates almost no additional load on the brickwork.
• These elements have high performance by tensile strength.
• High degree of adhesion to masonry mortar.
• Resistance against corrosion, which occurs as a result of the action of the alkaline environment of the concrete solution.
• The low thermal conductivity coefficient avoids the occurrence of “cold bridges” in the masonry structure.
• The durability of the elements themselves is largely ensured by their resistance to chemicals.

The main disadvantage of composite reinforcement is the low elasticity of the rods. For this reason, it is used only for horizontal reinforcement of masonry.

Also, these parts are not used in buildings and structures that are subject to increased fire resistance requirements for load-bearing walls, since at temperatures above 600 °C composites lose their properties.

Features of selection and application

Marking of basalt plastic rods is carried out as follows: BPA-450-6-2P:

• BPA– basalt-plastic reinforcement.
• 450 – rod length in mm.
• 6 – diameter in mm.
• 2P– two sand anchors.

Formula for selection necessary products: L = 90 + T + 40 + 90 (150), where:

• L – length of the required rod.
• 90 mm – the size of the penetration of the rod into the facing layer.
• T – width of the insulating layer.
• 40 mm – width of the air layer.
• 90 (150) mm – minimum and maximum depth of reinforcement in the supporting structure.

The required number of connecting rods is calculated at the design stage.

The following requirements should be taken into account:

• If an air gap is provided in a multilayer brick structure, then the number of parts is taken at the rate of 4 - 5 pieces per 1 m2 of masonry.
• When insulating a structure mineral wool slabs elements are installed at a distance of 50 cm from each other. This applies to both vertical and horizontal placement.
• In the case of using expanded polystyrene or polyurethane foam boards, vertical connecting products are installed between the boards. The horizontal pitch is 25 cm.

Additional reinforcement is required:

• Along the perimeter of window and door openings.
• Near expansion joints.
• In the corners of the building.

In this case, the parts are mounted in increments of 30 cm.

Advice! Quite often the seams of the inner layer and external cladding do not match each other. Therefore, reinforcing rods must be laid in the vertical joints of the supporting structure. Then the seam needs to be sealed with mortar.

First, insulation boards are installed, and then flexible rods. They are laid on slabs or pass through them. If the connections are established, and an insulating layer is installed over them, then it is necessary that the solution completely sets.

Metal flexible connections

Metal parts are widely used for reliable connection load-bearing structures walls with perpendicular partitions. They are made of stainless or galvanized steel wire.

The strength of the installation in the seams of the brickwork is ensured by the special shape of the elements: an L-shaped or wavy tip of a flexible connection, which is welded to a perforated plate.

Installation Features

If a load-bearing and facing wall is being built at the same time, the plate is installed in the masonry joint of the brick structure. In the case of cladding of an erected building, dowels are additionally used.

Holes are drilled in the load-bearing wall for them, then dowels are installed, and flexible connections for facing bricks are screwed inside.

The manufacturer's instructions allow you to calculate the required number of elements at the design stage. It depends on the loads that the structure will experience.

In places that require special reinforcement: wall corners, window and door openings, the number of parts must be increased by 1.5-2 times compared to conventional masonry.

The selection of a flexible connection is made based on several points:

• Total thickness of the multilayer structure.
• Presence and width of the air gap.
• Type of thermal insulation material and its thickness.

In addition, to ensure a stable size of the ventilation gap, it is necessary to use special fasteners that will reliably hold the thermal insulation layer.

Flexible connections for bricklaying are currently very diverse. The load-bearing wall can be made of wood, aerated concrete or brick. Depending on this, you should select exactly those fasteners that are intended for a given base. You can find out more information on the topic from the video in this article.

iz-kirpicha.su

What is flexible communication?

This is a type of reinforcing element that is used to strengthen a structure or its individual parts. In this case we are talking about brickwork. Most often, this method of reinforcement is recommended for three-layer walls, which have an internal heat insulator in their niche and themselves act as a connecting link for the load-bearing technical and facing layers. In terms of the device, the connection is an elastic rod with a circular cross-section. To eliminate rusting processes, flexible galvanized connections for brickwork are used, as well as basalt models, which in principle are not susceptible to corrosion. An important technical and structural feature of all types of connections is the presence of thickenings at the ends and protruding ribs. These additions increase the adhesive function of the element and give it the characteristics of a real anchor. Sand spraying at the end of the connection gives an even greater coupling effect - it organically enters into the structure of the solution, increasing the strength of the seam.

Features of basalt bonds

The segment of reinforcing elements for brickwork is still relatively young, but strong groups of competing materials have already formed in it. These are basalt, fiberglass and metal products. Moreover, basalt connections are called so only conditionally - in most cases we are talking about basalt-plastic elements with higher performance indicators. How does this variety outperform its competitors? Compared to fiberglass, there are few advantages. Moreover, in terms of technical and physical qualities, there are practically none - except for elasticity, but its significance in increasing the strength of walls is not so high. In turn, fiberglass has a big advantage in the form of hardness and durability, but also a significant disadvantage - such materials are much more expensive. Concerning metal products made of stainless steel, they are also ahead of basalt flexible ties for brickwork in terms of wear resistance and reliability, but their significant drawback in the form of reduced thermal insulation of walls evens the odds. The fact is that metal is a good conductor of cold, so winter time With such equipment, you can count on minimizing thermal energy by approximately 10%.

Main characteristics of products

Manufacturers label connections based on basalt fibers as BPA, that is, basalt-plastic reinforcement. The main performance characteristics relate to the compressive and tensile moduli of elasticity - respectively, on average 30,000 and 50,000 MPa. These are the pressure loads on the reinforcement that the bars can withstand. This is followed by indicators of breaking stress - both during stretching and during bending - from 1000 MPa. As for the dimensional characteristics, the range of indicators in them is much wider. The standard is considered to be an embedment depth of 90 mm to 150 mm. The thickness of flexible ties for brickwork is usually 6 mm.

Benefits of using flexible links

The advantages and overall justification for using flexible connections can be assessed using examples of their immediate operational tasks. Their presence in the structure brick wall gives the structure reliability, stability, resistance to seismic vibrations and durability. During operation, flexible connections for brickwork minimize the risk of wall destruction, which often happens with frames made without reinforcement. Again, the use of metal anchors does not always give the same strengthening effect, since the elimination of rusting processes cannot be guaranteed, and as corrosion develops, it reduces the strength of the masonry itself.

Connection installation technique

The technology of integrating basalt rods in itself is not complicated. It is enough to lay the element on a slab with insulation or directly on a layer of mortar with a rod, and then cover it with the same insulator or cement-sand mixture followed by brick. Typically, questions arise in the general choice of placement configuration and number of products. According to experts, optimal installation flexible connections in brickwork are made at the rate of 4 pcs. per 1 m2. If it is also planned to lay a heat insulator, then the step between the elements can be 50 cm. Auxiliary connections are integrated along the perimeter of the openings and in the zones of deformation of the seams. However, oversaturation with rods is also not recommended - foreign bodies in excess have the opposite effect of weakening the structure.

Nuances of reinforcement of monolithic walls

A special approach should be taken when working with monolithic walls, which are planned to be decorated with facing bricks. Holes corresponding to the depth of the mounting dowel are made directly in the monolithic base. The tips of the same hardware are hammered into them until they are completely drowned. A heat insulator plate is pinned onto the freed ends of the connections - it is secured with fixing elements and snaps into place. After this, the flexible connection for the facing brickwork should protrude slightly through the insulation, but be securely fastened. At the moment of laying the brick, the ends of the connection with sand coating should just mate with the mortar.

Manufacturers of flexible reinforcing ties

The undisputed leader in the production of basalt reinforcing bonds on the domestic market is the Galen enterprise. This brand produces products with lengths from 250 to 600 mm, provided with the necessary structural inclusions. It is the flexible Galen connections for brickwork that are characterized by the presence of sand coating, which increases the adhesiveness of the elements. Altech, Rockbar and Protech also produce similar fittings. Products from these brands are more expensive, but do not always provide exceptional performance that matches the price.

Conclusion

If earlier reinforcement as a mandatory measure was considered only in relation to the foundation, panel structures and floors, today even masonry cannot do without such inclusions. Questions arise only regarding the choice of suitable reinforcement technology. What are the benefits of flexible ties for brickwork made from basalt fibers in this regard? They are characterized by a combination of elasticity, reliability, tensile strength, thermal insulation resistance and an affordable price tag. Under heavy and even extreme loads, such rods will lose to their steel or fiberglass counterparts. But such threats are rare, and in terms of other parameters, basalt fibers demonstrate quite acceptable performance qualities.

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What is it and what is it used for?

Rods with a grooved structure are called flexible links. Their length varies from 20 cm to 60 cm and depends on the purpose. The ends have a sand coating and a screw anchor, which, when screwed in, opens and serves as a strong fixation of the facing brick to the load-bearing wall. The insulation is tightly pressed by a plastic washer with a latch located on the rod. This prevents its deformation and slipping. The rod passes one end into the load-bearing wall through the insulation, and its other end is laid between the rows facing masonry. This ensures a strong connection of all three layers of the structure.

To install and install flexible connections you must:

• Mark the drilling location on the block at such a level that after installation the opposite end of the flexible connection will be in the mortar joint of the facing layer. Use a drill with a 12 mm drill to drill a hole for the plastic dowel. Recommended dowel length is from 70 to 100 mm.
• The resulting hole must be blown out of dust. To do this, you can use a “pear” or other available means.
• Install a plastic dowel into the resulting hole, then hammer a flexible connection into the dowel.
• If the wall being built is a three-layer structure, then the insulation is secured to the installed flexible connections using plastic clamps.
• We install the opposite ends of the flexible connections into the mortar joint of the facing layer. The recommended depth of flexible connection in the facing layer is 90 mm.
• For the reliability of the structure, at least 5 flexible connections are required per square meter!

How to correctly calculate the number of flexible connections?

Total number of flexible connections = total area of ​​all walls (excluding windows and doors) x 5.5 pcs.

Requirements for flexible connections are described in SNiP II-22-81 “Stone and reinforced stone structures» Clause 6.31 of this SNiP (with the addition latest edition) reads:

• Flexible connections should be designed from corrosion-resistant steels or steels protected from corrosion, as well as polymer materials. The total cross-sectional area of ​​flexible steel ties must be at least 0.4 cm² per 1 m² of wall surface. The cross-section of polymer bonds is established from the condition of equal strength to steel bonds.
• Flexible connections in multilayer walls with insulation and with an outer facing layer of brick or stone should provide the ability to absorb force, temperature, shrinkage and sedimentary deformations in the vertical. The connections must be made with fixation in the load-bearing wall and the facing layer by bending.

Flexible connections for brickwork – important element building structure, connecting the load-bearing wall, insulation and facing material. In this way, the strength and durability of the building or structure being erected is achieved. Currently, reinforcing meshes are not used, since they have proven themselves on the negative side, but special metal rods are used.

Kinds

The internal walls of the building always have an almost perfectly stable temperature, due to the fact that they are not affected by external weather conditions. However, the facing (outer) wall can easily heat up in warm time up to + 700 degrees Celsius, cool down to minus 400 degrees in winter. Such temperature differences between the internal and external wall lead to changes in the geometry of the outer cladding.

Flexible connections at this moment allow you to maintain the integrity of the structure and avoid cracks. Reinforcing anchors bend well, withstand tension and have high corrosion resistance. These rods do not create cold bridges with low thermal conductivity. Such characteristics make it possible to achieve high reliability and long service life of the building.

The design is a shaped metal rod with a length of 20 to 65 cm. These parts allow you to connect all the elements of the wall, including facing bricks and aerated concrete. The size of the selected bundle depends on the construction features used in the construction of a particular building. Thus, for houses no higher than 12 meters, it is recommended to use rods with a cross-section of 4 millimeters. For higher structures, metal structures with a cross-section of 6 millimeters are suitable. The flexible connection also has a thickening made of metal at both ends. This is necessary for more reliable fastening of the structure, since they play the role of anchors that are firmly fixed in the seams of the brickwork. Sand fasteners go well with the mortar used to create joints between the masonry. It provides strong fixation of the flexible connection. The walls are additionally protected from corrosion.

building element used for walls with classic brickwork, gas blocks and facing bricks. Several types of rods are produced.

Basalt

This composite material is lightweight and yet can withstand high loads. Such products, for example, are produced in Russia under the Galen brand. It has the lowest weight and does not create additional load on the foundation of the house.

Steel

Manufactured from carbon steel and have high level protection against corrosion. The most popular among professional builders are Bever flexible connections made in Germany. To protect against rust, they are coated with a special zinc compound.

Fiberglass

They are only slightly inferior to basalt rods in some characteristics. So, they are less elastic, but have good tensile strength. Do not corrode.

Metal

Made from stainless steel. These flexible connections are capable of forming cold bridges, so they are used only with insulation.

The choice of one type of material or another depends on the specific conditions in which the installation will be carried out, as well as on the components in contact with the harness.

Advantages and disadvantages

The most popular in modern construction composite materials, because they have a whole range positive characteristics, among which:

• light weight, which does not additionally affect the masonry;
• excellent degree of adhesion to the mortar used for laying bricks;
• reliable protection against corrosion, which can occur due to the alkaline environment of concrete on metal rods;
• low thermal conductivity does not allow the formation of cold bridges in the brickwork;
• resistance to adverse conditions external environment allows you to achieve durability and strength of the structure.

Despite the obvious advantages, composite rods also have significant disadvantages. There are two of them.

A low elasticity index is observed; such rods are not suitable for vertical reinforcement, since they will not be able to adequately ensure the integrity of the structure. They are used only for horizontal structures.

Low fire resistance. Composite rods lose all their properties at temperatures above 6 thousand C, which means they cannot be used in buildings that have increased requirements for fire resistance of walls.

If listed disadvantages are weighty, then carbon or stainless steel rods are used.

Calculation rules

In order to establish flexible connections (this is especially true for aerated concrete, since it is very soft material), The following algorithm of actions is applied:

• the size of the rods is determined;
• the required number is calculated.

The length of the rod can be found by adding the parameters of the thickness of the insulation and the size of the gap for ventilation. Add double size anchor depth. The depth of the depth is 90 millimeters, and the ventilation gap is 40 mm.

The calculation formula looks like this:

L= 90 + T + 40 + 90, where:

T – width of insulating material;

L – calculated anchor length.

Using this method, you can calculate what size flexible connection is needed. For example, with an insulation thickness of 60 mm, a rod 280 mm long will be required.

When it is necessary to calculate how many rods for the reinforcing connection are required, you need to know at what distance from each other they should be located. Professional builders It is recommended to use at least 4 rods for every square meter of brickwork and at least 5 for aerated block walls. Therefore, knowing the area of ​​the walls, you can determine the required amount of material by multiplying this figure by the recommended number of anchors per 1 m2.

Installation instructions

In order for flexible connections to function properly, the recommended work flow must be strictly followed. Not the last role on final result provides the correct number and sizes of anchors, which vary depending on the thickness of the insulation. The depth of immersion of the rods into the structure should be taken into account; it should not be less than 90 millimeters. Only after this do they begin to directly prepare the wall itself for installation.

1. Clean the wall from excess mortar, dust and construction waste(you can use a construction vacuum cleaner).
2. Seal the cracks using freshly prepared mortar.
3. A primer is applied, and then a special composition that has antifungal properties.
4. Mount the base for mounting flexible connections.

The basis for the external wall is reinforcement and concrete. They are placed in a trench along the entire length of the walls and buried 300 or 450 millimeters. The height of the base above ground level must be at least 20 centimeters.

The design of the reinforcing connection for brick and aerated concrete walls differs. For bricklaying, standard patterns are used.

• For every 1 m2, 4 anchors are placed, which are recessed into the seams. If min. cotton wool, then the distance between the rods is increased to 50 centimeters. When polyurethane foam is used, the “step” along the length of the wall is 250 millimeters, and in height it can be less than or equal to the size of the slab (no more than 1 meter). Additionally, reinforcing rods are installed in the corners of deformation of seams, near window and doorways, as well as in the corners and near the parapet of the building. It is worth considering that sometimes the horizontal seam of the main wall does not coincide with the cladding seam. In this case, the flexible ligament rod is positioned vertically and then covered with mortar.

Brick construction has always been and to this day remains highly popular, thanks to the unique properties of brick as a building material. But the advantages of brickwork - such as excellent thermal insulation, reliability and a very long service life - can be negated if flexible connections that are not suitable for the task are used in construction.

Experts recommend abandoning metal reinforcement in favor of basalt flexible ties for masonry - an innovative development that allows you to get rid of “cold bridges”, ensure the strength of structures and make construction more economical.

Basalt flexible ties for brickwork

What is composite flexible link?

This is a rod with a round cross-section and thickened at the ends: these zones allow you to securely fix the reinforcement in the masonry, provide good adhesion to the masonry mortar and protect the reinforcement from corrosion. The air gap is provided by a plastic retainer with a latch.

How to choose the right composite flexible connection?

The length of the product, designated L, is selected taking into account the presence/absence of an air gap. In the first case, the calculation is made according to the formula: L = 90mm+T+40mm+90(150)mm (designation T is the thickness of the insulating layer, 40mm is the air gap indicator, 90/150mm is the minimum and maximum depth, on which basalt connections are embedded in the wall). If a ventilated gap is not provided, the length is L=90mm+T+90(150)mm.

Prices for basalt connections of BPA reinforcement for brickwork

Flexible connections for masonry differ

• have an extremely low thermal conductivity coefficient (in contrast to highly thermally conductive metal);
• characterized by significantly lower mass;
• are not susceptible to corrosion and are resistant to alkaline environments;
• are produced with a high level of quality, confirmed by a full set of technical documentation and relevant certificates.

Flexible basalt connections: technical characteristics

• Certificate of Conformity of the Gosstroy of Russia No. ROSS RU.SL55.N00042
• Certificate fire safety SSPB.RU.UP001.N00259, issued by “POZHTEST” FGU VNIIPO EMERCOM of Russia
• Sanitary and epidemiological conclusion No. 21.01.04.571.P.000141.06.02.
• Recommended for use by the State Construction Committee of Russia

Basalt-plastic reinforcement

Rockmesh composite mesh

Thermosave façade dowel

Facade dowel Galen

Fasteners for flexible connections

Mine support

IN Lately Galen flexible ties, which are composite-type products designed for installation in a single wall structure, are becoming increasingly popular in construction. The Galen company radically revised the characteristics of this product and, instead of the notorious reinforcement, began to produce them from basalt plastic, based on smooth surface which sand is applied in a zoned manner.

Application of flexible Galen ties made of basalt plastic

The production company Galen launches on the market building materials flexible connections, various types, which are used for the following purposes:

• to give integrity to the structure from a brick cladding layer and an aerated concrete internal wall. Flexible connections for aerated concrete Galen with an anchor are suitable for this screw type, which is well retained in the gas block;
• fastening the load-bearing rough wall with facing material during the construction of three-layer brickwork with insulation located inside, as well as the production of multilayer blocks. To do this, use round-section rods with thickening at the ends obtained by a layer of sand;
• installation of insulation on monolithic walls buildings, where connections connect them to the cladding through insulation. In this case, use rods coated with sand on one side and a dowel sleeve on the other.

Depending on the purpose, Galen basalt-plastic flexible ties can vary in length and have different diameters.

Advantages of flexible Galen connections

This product, presented by the Galen company, is much more economical than metal analogues, thanks to the basalt component, and in addition, it has a number of advantages:

• absolute resistance to corrosion processes and the effects of acids inherent in fiberglass products;
• the strength of products made from basalt plastic is close to carbon fiber;
• do not lose their performance characteristics at temperatures within the range of -50°C – +120°C;
• light weight, which is 9 times less than that of similar metal products;
• high rates of stretching and compression, like plastic products.

In addition, flexible Galen connections made of basalt plastic are environmentally friendly and safe due to unique material, which also has low thermal conductivity.

The company "TSK" offers to buy flexible connections of the Galen brand in Moscow for the construction of buildings from different material and insulation of external walls. If you find it difficult to make a choice on your own, the company’s specialists will help you choose necessary materials, optimally suited for your facility.