The use of flexible ties in the construction of brick walls. Flexible connections for brickwork: types, cost, installation Fiberglass anchors for facing bricks

Facing brick is the most durable and reliable finishing material of all used in construction.

At the same time, it cannot be used as the main material, which creates certain difficulties when laying on an insulated wall with the formation of a ventilation gap.

There is a need for a mechanical connection of the facing layer, otherwise there will be just a free-standing half-brick wall.

If construction is carried out without external insulation, the outer layer is dressed with bonded bricks, periodically laid after a certain number of rows.

The situation with the insulated wall is more complicated.

A layer of material completely cuts off the inner and outer parts of the walls, making it difficult to bond.

The ligament structure in such cases is a rod passing through the insulation into the wall, the other end of which is laid between the rows of cladding.

Previously, either a metal mesh or (most often) anchors made of thin reinforcement were used to connect the facing layer and the wall. This technique had a negative property - since only the outer layer heats up or cools down, its dimensions are subject to constant changes.

This leads to constant movements of the rods, gradually loosening the sockets and reducing the strength of the fastening. Ultimately, the bundle simply lost its mechanical properties, since the rods did not stick to the wall.

The solution to the problem was flexible connections with some elasticity. They are able to change the direction vector of the rod without destroying the strength of the backfill. An anchor type is fastened to the wall - when screwing, the rod increases the diameter and is firmly fixed in the socket.

The second end is laid between the rows, carrying out a bunch of layers. In addition, to seal the insulation material, there is a special plastic washer that presses the insulation against the wall. It does not allow the material to lag behind the wall, eliminates slipping or other deformation.

This type of bracing responds to movements of the outer facing layer by some displacement without weakening the rigidity of the connection with both layers - the main wall and the cladding, which greatly increases the service life and solves the problems of rigid ligaments.

As a material for the manufacture of flexible connections, stainless steel or a newer development is used - composite polymer materials:

Basalt plastic.
Fiberglass.

Possessing optimal properties, these materials do not change their properties at all during the entire service life and provide a high-quality connection of three-layer wall structures. The rods have an external coating of sand with bulges at the ends, which significantly enhances adhesion to the sand-cement mixture.

Polymer materials do not create cold bridges, contributing to more efficient heat saving and increasing the service life of wall materials.

Specifications of anchors

Polymeric flexible bonds have such working parameters:

Complete resistance to alkaline action of cement mortars.
Low specific gravity, no load on the structure.
They do not create radio interference, they are magnetically inert.
No cold bridges.
Rod diameter — 6 mm.
Length - 200-600 mm are available in 10 mm increments.
Durability - 100 years(calculated).
Coefficient of thermal conductivity - 0.48 W/(m K).
Operating Temperature Limits — -60 to +93.
Breaking tensile force - 21500 N.
Modulus of elasticity (min) — 50000 MP a.
Bending strength - 1500 mPa.
pullout force - 9970 N.
Minimum immersion depth of the anchor part — 90 mm.

NOTE!

polymeric flexible bonds are produced by different manufacturers using their own processing techniques and raw material compositions. Therefore, the technical characteristics may differ to some extent from those given, which does not change the general properties of the anchors and does not reduce their performance.

The main types and markings of flexible connections

Flexible links may vary by type of use:

For perpendicular adjoining internal walls. They have the form of a perforated strip, attached in a bent state to the bearing wall and laid in the inter-row spaces of the masonry of the adjacent wall. They are made mainly of stainless steel, since the specifics of internal operation do not threaten the formation of cold bridges.
For three-layer walls with insulation and an outer facing layer. These are considered anchor rods made of polymeric materials with a sandy coating.

The marking of flexible links fully reflects the parameters of the rod:

BPA - 300-6-2P

where BPA is basalt-sand rebar.
300 is the length of the anchor rod.
6 - diameter.
2P - 2 sand anchors.

Sometimes the marking directly indicates the type of material of the load-bearing walls for which this anchor is intended, for example:

SPA -250-6-aerated concrete.

SPA - fiberglass fittings.
250 is the length of the rod.
6 - diameter.
Aerated concrete is a load-bearing wall material. The indication of the material usually indicates the presence of a plastic sleeve at one end, which is installed like a dowel into a load-bearing wall. Aerated concrete is a rather soft material, and conventional installation methods are not suitable for it.

Installation technology

Before starting the installation of flexible connections (which means - before starting to brick the house), you should decide on their size and number.

The size is determined by adding the thickness of the insulation to the value of the ventilation gap plus double the depth of the bookmark, for example:

L = 90 + T + 40 + 90= 220 + T

where L is the anchor length.
T is the thickness of the insulation.
90 and 40 - respectively, the depth of anchoring (bookmarks) and the size of the ventilation gap. With an insulation thickness of 50 mm, anchors with a length of 270 mm are required.

The installation of flexible connections is carried out according to a certain scheme. The maximum distance between anchors is 60 cm horizontally and 50 vertically. In practice, they are installed more often, on 1 m2 of a wall, on average, it takes from 5 pieces of flexible connections for aerated concrete and from 4 pieces. for brick load-bearing walls.

The number of elements can be found in the design documentation, but in the absence of access to it (for example, at the time of purchase), you can simply calculate the area of \u200b\u200bthe walls and purchase material with some margin.

The procedure for installing flexible connections in aerated concrete walls is as follows:

According to the established scheme, the centers of the holes are marked, corresponding in height to the inter-row spaces of the facing brick.
A drill or drill of a perforator with a diameter of 10 mm makes a hole with a depth of at least 90 mm (usually 100 mm is made).
Dust from the hole should be removed using a special pear attached to the set of flexible fittings along with the wrench for screwing the anchors.
The anchor is inserted into the hole for the entire length of the sleeve, twisted with a special key until it stops.
With the help of a plastic washer-clamp, the insulation is pressed.
The free end of the flexible connection is laid between the rows of facing bricks.
Around door or window openings, at parapets and expansion joints, as well as at the corners of the building, additional flexible connections are installed with a step of 300 mm. Distance to the opening vertically - 160 mm, horizontally - 120 mm.

Installation of insulation can be done before laying flexible connections or after that.

In the first case, it becomes possible to more firmly connect the anchor to the wall, seal the holes with mortar. At the same time, the installation of insulation is complicated by the need to pierce the material with rods sticking out of the wall, which can cause distortion or cracks.

The second option is simpler, but requires careful selection of the drill for the most dense installation of anchors into the wall, since it is very problematic to seal the connection with mortar in this case.

When erecting walls with non-vapor-permeable insulation (polystyrene, polyurethane foam) with simultaneous cladding, the recommended sequence of actions changes:

A flexible connection is being laid.
The outer facing layer is erected to the installation height of the next anchor.
The heater is installed.
The main wall is being laid.
The next anchor is installed.
Further, the process continues in the same order.

This technique is used due to the absence of a ventilation gap, which allows you to simultaneously build all layers of the wall.

If flexible connections are installed in walls with a ventilation gap, it is also recommended to lay the masonry ahead of the facing layer:

A connection is being established.
An outer wall is built up to the level of the next anchor.
An inner wall is built up to the level of the next anchor.
A heater is installed between them.
A flexible connection is laid, the insulation is pressed against the load-bearing wall with the help of a lock washer.
The process is repeated again.

This option is only suitable for the simultaneous construction of walls and cladding; when finishing a finished house, you should use the very first option.

Useful video

In this video you will learn what flexible connections are:

Conclusion

Polymer flexible connections are the most convenient option for connecting load-bearing wall structures with cladding. The absence of corrosion, fatigue stresses of the material makes the service life as possible as possible.

The low thermal conductivity of polymer rods completely eliminates the formation of cold bridges, sweating and destruction of wall sections. The elasticity of the anchors allows you to maintain the strength of the adhesion of the rods, prevents loosening and falling out of their sockets.

Alkali resistance makes polymeric flexible bonds completely immune to cement-sand mortars, keeping the material in working condition for the entire service life.

In contact with

UNIKMA offers BEVER fasteners:

For brick base

Flexible connection-anchor ZV-Welle

Material:
spacer and connecting element made of stainless steel and a polyamide sleeve (included in the kit).

Mounting:

In assortment:

vendor code	Name	Dimensions, mm	Gap, mm
13000	ZV Welle 4.0 x 160	4.0x135	up to 25
13010	ZV Welle 4.0 x 180	4.0x155	up to 45
13020	ZV-Welle 4.0 x 210 *	4.0x185	up to 75
13030	ZV Welle 4.0 x 250	4.0x225	up to 115
13040	ZV Welle 4.0 x 275	4.0x250	up to 140
13050	ZV Welle 4.0 x 300	4.0x275	up to 165
13060	ZV Welle 4.0 x 320	4.0x295	up to 185
13070	ZV Welle 4.0 x 350	4.0x325	up to 215
13075	ZV Welle 4.0 x 375	4.0x350	up to 240
13080	ZV Welle 4.0 x 400	4.0x375	up to 265

Flexible connection-anchor DA-Welle

Material:
spacer-connecting element made of stainless steel and a sleeve-dowel 6x50 (not included in the kit).

Mounting:

In assortment:

vendor code	Name	Dimensions, mm	Gap, mm
13200	DA Welle 3 x 160	3.0x135	up to 35
13210	DA Welle 3 x 180	3.0x155	up to 55
13220	DA Welle 3 x 210	3.0x185	up to 85
13240	DA Welle 3 x 250	3.0x225	up to 125
13250	DA Welle 3 x 275	3.0x250	up to 150
13260	DA Welle 3 x 300	3.0x275	up to 175
13300	DA Welle 4 x 160	4.0x135	up to 35
13310	DA Welle 4 x 180	4.0x155	up to 55
13320	DA Welle 4 x 210	4.0x185	up to 85
13340	DA Welle 4 x 250	4.0x225	up to 125
13350	DA Welle 4 x 275	4.0x250	up to 150
13360	DA Welle 4 x 300	4.0x275	up to 175
13370	DA Welle 4 x 350	4.0x325	up to 225
13380	DA Welle 4x400	4.0x375	up to 275

For installation in masonry joints

Flexible connection Well-L

Material:
stainless steel element.

Mounting:

In assortment:

vendor code	Name	Dimensions, mm	Gap, mm
10600	Well-L 3.0 x 225	3.0x200	up to 100
10610	Well-L 3.0 x 250	3.0x225	up to 125
10620	Well-L 3.0 x 275	3.0x250	up to 150
10630	Well-L 3.0 x 300	3.0x275	up to 175
10640	Well-L 3.0 x 340	3.0x315	up to 215
10650	Well-L 4.0 x 225	4.0x200	up to 100
10660	Well-L 4.0 x 250	4.0x225	up to 125
10670	Well-L 4.0 x 275	4.0x250	up to 150
10680	Well-L 4.0 x 300	4.0x275	up to 175
10690	Well-L 4.0 x 340	4.0x315	up to 215

Flexible connection Multi

Material:
stainless steel element.

Mounting:

In assortment:

vendor code	Name	Dimensions, mm	Gap, mm
11451	Multi 250 *	250	up to 100
11461	Multi 280	280	up to 130
11471	Multi 300	300	up to 150
11481	Multi 320	320	up to 170

Flexible Multi-Plus connection

Material:
stainless steel element.

Mounting:

In assortment:

vendor code	Name	Dimensions, mm	Gap, mm
13490	Multi Plus 280	280	up to 130
13500	Multi Plus 300	300	up to 150
13510	Multi Plus 320	320	up to 170
13520	Multi Plus 340	340	up to 190
13530	Multi Plus 360	360	up to 210

Flexible DUO Communication

Material:
stainless steel element and consists of two parts - a flat perforated tape and a wire with a bend at the end on one side and an S-shape on the other

Mounting:

In assortment:

vendor code	Name	Dimensions, mm	Gap, mm
15010	DUO 113	113	up to 60
15020	DUO 133	133	up to 80
15030	DUO 153	153	up to 100
15040	DUO 173	173	up to 120
15050	DUO 193	193	up to 140
15060	DUO 213	213	up to 150

Aerated concrete is becoming an increasingly popular building material. This is due to the fact that gas blocks of various thicknesses are on the market, from which walls are quickly erected. For wall cladding, brick is most often used. Durable and reliable adhesion of layers to one another is carried out by flexible connections.

The construction of modern buildings with a bearing aerated concrete or foam concrete wall is not complete without such a component as flexible connections. These are metal or basalt-plastic rods. They are the link between the porous concrete and the brick layer.. Between them, mineral wool or an air gap can additionally be located to increase thermal insulation. Flexible connections are used for aerated concrete in several options for fastening building elements:

gas blocks and cladding;
gas blocks, insulation and facing stone;
with an air gap between layers.

Design

The connections intended for cellular concretes have a certain design. Their flexible round rod is covered with a special sand coating on one side, and on the other side there is a screw thread on the fittings. This design provides reliable fastening of the layers to each other.

Advantages

The main advantage of anchors is their reduced thermal conductivity. Thanks to this, the problem of the so-called "cold bridges" is solved. The use of such reinforcement reduces the cost of construction and provides reliable adhesion between the elements. It is easy to install, which saves a lot of construction time. The heat resistance of the fittings will protect walls damaged during a fire from destruction.

Marking

When choosing and buying anchors, marking plays an important role. The product marking contains the bond length, diameter, its type, as well as the material of manufacture. The following designations are accepted:

BPA is basalt plastic reinforcement;
GS - carbon steel rod with anti-corrosion coating;
GSE - a rod made of stainless steel.

Types

Today's construction market offers such flexible connections for aerated concrete:

flexible fittings made of anti-corrosion steel;
basalt anchors.

These two types have some differences. Flexible connections made of stainless metals are characterized by a complex shape for better adhesion to aerated concrete and a curved wave-like shape for brickwork. In the equipment of a flexible connection, there may be additional latches if a heat-insulating layer is used.

Basalt plastic rods are round in cross section. A dowel made of plastic can be located at one end of the rod. The other end, as a rule, is thickened, it has a spray of sand to improve adhesion. If there is a dowel, then it is mounted in a gas block. If there is no dowel, then the installation is made in the seam between the blocks. The sprayed end is placed in the brickwork. Each part is designed for a specific layer of building material.

Bonds for aerated concrete made of composite materials are definitely lighter in weight than metal counterparts. They are more durable and not prone to corrosion, and also do not collapse from prolonged exposure to high temperatures.

Mounting

The number of fittings is taken with the calculation of 5 pieces per square meter of the bearing wall. Anchors are embedded in building layers to a depth of 90 mm. Installation includes the following steps:

Drilling points are marked in the aerated concrete wall so that after the anchor is screwed in, the other end is located in the mortar joint on which the brick is placed.
Use a drill with a diameter of 10 mm, make holes with a depth of 100 mm.
All openings must be purged of dust.
The flexible connection is placed in the hole with the side where the anchor is located.
The anchor is screwed into the hole until it stops, it must be completely immersed in the aerated concrete block.
This is followed by the construction of a wall of facing stone and fixing the insulation.

The use of flexible connections greatly simplifies and facilitates the construction process, involves reliable fastening of the building layers to one another. Modern composite materials that are used in the manufacture do not conduct cold and are resistant to high temperatures.

In construction, the quality of fasteners is no less important than the building materials used. Therefore, Slavdom offers its customers only proven fastening systems. In this section, a wide range of anchors from BEVER stainless steel, basalt plastic (Galen) and fiberglass (Biysk), reinforcement for brickwork are presented.

Among these products, there are flexible connections for brickwork, concrete. Also in the company "Slavdom" you can purchase fasteners for solid, porous and wooden bases, flexible connections for insulation of monolithic bases, concrete and thermoblocks. Our qualified managers are always ready to suggest products and answer all your questions.
According to European construction standards, the use of fasteners has long been no longer an additional accompanying material, but the reinforcement of brickwork is the norm. When used correctly, anchors give the load-bearing wall extra strength, providing reinforcement for brick walls.

What are the benefits of reinforcement?

Unfortunately, more and more often we hear in the news "brickwork collapsed" or part of the wall. Moreover, sometimes we observe such cases with newly built houses. All this is due either to an attempt to save money on reinforcing brickwork, or to a lack of market awareness about products that help strengthen brickwork.

We offer anchors that are used to reinforce basalt-reinforced plastic (so-called basalt-reinforced rebar), fiberglass and stainless steel masonry. It is very important that flexible connections from these materials are used. As an example: as a result of corrosion of ferrous metal, a partial collapse of the building occurs already a few years after the use of EO as a flexible connection. Since the 60s in the UK, only stainless materials have been used for driving and inserting anchors.

All anchors have been tested in accordance with the requirements of GOST. Anchors allow reinforcing bricks, wood, reinforcing blocks (including reinforcement of aerated concrete and foam concrete).

When choosing a finish in the form of a brick cladding or when building another wall, for example, in a wooden house, we will need to tie together all the components of our design, and this:

Bearing wall.
insulation layer.
Facing.

Accordingly, we need a constructive solution, which will be flexible connections for brickwork.

We connect insulation and cladding with the wall

What it is

Flexible connection is a special corrugated rod, which is available in lengths from 20 to 60 cm. The size depends on the design solution. And we will talk about this a little lower.

The material is basalt plastic, and the diameter of the product depends on what exactly should be connected.

Advantages

Like any construction equipment or material, we consider flexible connections in terms of their physical and technical indicators.

The benefits we can include:

Complete absence of cold bridges. Thus, our design and all work will be completely sealed and energy-saving.
The composition of the product based on basalt and plastic is absolutely resistant to the alkaline environment of concrete.
Durable plastic ties for brickwork can last for decades without deforming at all.
Light weight, which plays a significant role, especially considering how often we will use the connection. With a small weight, the design of the cladding itself is more lightweight.

Applications

Basalt-plastic anchors are used for effective fastening of the facing layer of the wall through the insulation material into the load-bearing wall. This ensures the stability and strength of the cladding.

It remains to consider, using an example, how exactly we can use this product with our own hands.

This is how you can schematically immediately determine what exactly we will do with the cladding and insulation.

Let's first choose the materials with which we will work:

Insulation for external walls. Let's choose mineral wool in the form of mats. It is quite easy to work with it and there is no need for special knowledge.
As a cladding, we will have a decorative building brick based on silicate. It is one of the most common materials, plus it is also quite easy to work with.
cement mortar. Here we need cement, sand, and a special dry mix for finishing the joints.

Preparing a load-bearing wall

Even if it is completely fresh and facing it must be prepared in a certain way.

The wall must be clean. We remove the “snot” of the solution, debris, dust from its surface, we remove greasy stains, if any.
Check it for cracks and if any, fill them with mounting foam or acrylic sealant.
We remove all metal structures from it if available.
We prime. This is a necessary condition for any kind of work in general. The base must be primed and treated with an antiseptic.

Foundation preparation

While the wall absorbs the primer, we can work on the base for the cladding. It is clear that we will tie the wall and cladding with basalt-plastic ties, but do not forget that this will give strength to our structure, but will not reduce its pressure on the ground!

The weight of the cladding wall can be very large, for example, 100 square meters of cladding can weigh about 20-40 tons, and we can’t do without a base.

Note!
The final price of work and materials will increase slightly, but not critically.

For the base, we will choose cement of the M 300 brand, as the most suitable for the foundation, river sand and crushed stone of the middle fraction. In addition, we need reinforcement with a cross section of 10 mm.

Advice!
Many experts suggest laying the first rows of cladding on steel corners screwed to the main foundation.
However, the weight of the cladding wall may be large enough for this option.
Therefore, the base in the form of reinforced concrete looks ideal.

We dig a trench up to 30-40 cm deep and 20-30 cm wide around the entire perimeter of the house, lay the reinforcement and fill it with concrete. Taking into account the removal of the formwork, the foundation will rise 20 cm above the ground.

The nuances of installing flexible connections

There is one nuance associated specifically with the installation of flexible connections. You can immediately insert them into the load-bearing wall and then put mineral wool on them, or vice versa, first attach the insulation, and then, punching through it, install the anchor.

In general, there is not much difference, you need to install according to the situation. Although for the first experience and for independent work, we will first fix min wool, and then anchors.

Suppose, for the construction of a load-bearing wall, we used a double silicate brick M 150, and we got a wall in “two bricks”. Thus, we calmly drill 5-10 cm into the masonry. Accordingly, we also select flexible connections of a certain size.

We install basalt connections for brickwork so that they go in steps of 50 cm horizontally and vertically. You can deviate from this scheme on ceilings, at corners, above door and window openings.

Masonry and docking

Between the bearing wall and the facing wall we have at least 6-10 cm distance, just right for installing the mineral wool slab. We carry out masonry strictly according to the level and vertical plumb line.

We sink the free end of the basalt anchor in the masonry, this does not even change the thickness of the seam. Be sure to leave ventilation passages in the first and last rows of masonry, air must circulate freely between the wall and the cladding.

Conclusion

Now we can be sure that plastic anchors will last throughout the life of the cladding and will perfectly strengthen and bind the supporting structure and brickwork. In the presented video in this article you will find additional information on this topic.

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