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The emergence of new technologies in various industries industry has not spared the construction industry. New materials have appeared that have made it possible to reduce construction time installation work and reduce the weight of assembled structures, improve thermal characteristics objects under construction and their operational characteristics. One of these materials that appeared on the construction market of our country in last years, became fiberglass reinforcement, which will be discussed in this article by the editors of the site.
Appearance of reinforcement made of composite materials
Structure, standard sizes and operational characteristics of composite fiberglass reinforcement
A building material made of fiberglass fibers impregnated with a polymer binder, formed in the form of rods with ribs of a given size and cured during the production process, is called fiberglass reinforcement (FRP or FRP).
In its structure, the SPA is a rod consisting of two parts, such as:
- internal rod – provides the strength characteristics of the product and is made of fiberglass fibers placed parallel to each other or in the form of a pigtail, filled with polymer resin;
- outer layer - made of composite material fibers wound onto an internal rod or in the form of a fine abrasive applied by spraying.
In addition to the fact that SPA differs in the type of outer layer, it is classified according to standard sizes accordingly:
- in diameter - from 4.0 to 18.0 mm;
- length – up to 12 m (when sold in the form of rods).
For your information! Fiberglass reinforcement with a diameter of up to 10.0 mm inclusive can be sold in the form of rods or in coils. If sold in the form of a coil, its length depends on the equipment on which it is manufactured. Reinforcement with a diameter of more than 10.0 mm is sold only in the form of rods.
The main performance characteristics for of this material are the following indicators:
- Diameter – determines the bending and tensile strength limits of the product.
- Weight – characterized by the mass of one linear meter products.
- The winding pitch is for spas with a relief coating.
Areas of application and types of fiberglass reinforcement
Currently, SPA is sold not only in the form of rods and coils, but is also offered in the form of reinforcing meshes and reinforcement cages of various shapes and overall dimensions.
Due to the variety of offers and successful experience in use, this material is used in various construction and installation works, as well as for the manufacture of various structures.
Main areas of use fiberglass reinforcement are:
For your information! SPA has found its application in summer cottages: it is successfully used in the manufacture of greenhouses and hothouses as arches on which covering material is laid, as well as fencing and supporting structures for fruit and vegetable crops.Ask a Question
“The production of fiberglass reinforcement is regulated Interstate standard GOST 31938-2012 “Composite polymer reinforcement for reinforcement concrete structures. General technical conditions."
Pros and cons of composite fiberglass reinforcement
The reason that after its appearance on the market SPA became quite in demand was positive traits this material, which include:
- light weight;
- resistance to oxidation and other types of corrosion;
- low thermal conductivity;
- long service life;
- is a dielectric (does not conduct electric current);
- Possibility of use without the use of welding equipment.
Disadvantages are also present, but they are much smaller, these are:
- relatively low thermal stability;
- low elasticity values.
Related article:
Knitting reinforcement for a strip foundation is a reliable way to create a rigid metal frame for a reinforced concrete structure. We will tell you how to carry out this work correctly and without extra costs in this detailed material.
What to look for when choosing
When the choice fell on the use of fiberglass reinforcement when performing construction and installation work, then when purchasing it you should pay attention to such indicators as:
- Diameter - must correspond to the declared values.
- The color of the fittings must be uniform and with shades no darker than those in the declared characteristics.
- The quality of winding of the outer layer.
- Products must have appropriate quality certificates and test reports.
Important! Availability of SPA color more dark shades than stated by the manufacturer, indicates that the production process was violated temperature regime manufacturing. Reinforcement of this color is burnt and its technical characteristics cannot correspond to the declared ones.
When choosing a spa, it is best to initially find out the reputation of the company producing this material, for which you should read reviews on the Internet and in other sources of information.
Expert's point of view
Dmitry Kholodok
Technical director of the repair and construction company "ILASSTROY"
Ask a Question“When winding the outer layer of reinforcement, pinching of the inner rod of the product should not be allowed, because otherwise, the strength characteristics of the spa will be compromised.”
Related article:
In the article we will look at the pros and cons of this foundation, the nuances of its correct pouring, as well as which brand of concrete is best to choose in order to get a high-quality structure.
Which reinforcement is better: metal or fiberglass?
Which reinforcement to choose - metal or fiberglass - is decided at the development stage project documentation, or individually, based on a comparison of the main technical characteristics shown in the table below:
| Characteristic | Metal | Fiberglass |
|---|---|---|
| Tensile strength, MPa | 390 | 1300 |
| Thermal conductivity coefficient, W/m²×K | 46 | 0,35 |
| Density, kg/m³ | 7850 | 1900 |
| Elasticity | + | + |
| Plastic | + | - |
| Corrosion resistance | - | + |
| Dielectric properties | - | + |
Leading manufacturers
The production of composite fiberglass reinforcement is carried out in many regions of our country. This especially applies to areas with developed industrial infrastructure, such as:
- Moscow and the Moscow region - “Moscow Composite Materials Plant”, LLC “NPC “SPETSPOLIMER”, LLC NPK “ARMASTEK” and others;
- St. Petersburg and Leningrad region- “Leader-Composite” and others;
- Yaroslavl - “Yaroslavl Composites Plant”;
- Yekaterinburg and Sverdlovsk region - Uralteplostroy, UZKT LLC, Elpromtekh LLC, NPF UralSpetsArmatura LLC;
- Saratov - LLC "Povolzhskaya Armatura" (Polarm).
For your information! In many cities, spa production is carried out by small enterprises operating at the local level, so if you need to find a similar production in your region, you need to study the building materials market.
Review of prices and user reviews of composite fiberglass reinforcement
The cost of a SPA depends on its technical characteristics, the place of purchase and the company selling it.
As of Q3 2018 average cost fiberglass reinforcement, when sold through dealers of manufacturing companies, is:
| Manufacturer | Brand | Diameter, mm | Outer layer type | |
|---|---|---|---|---|
| PC "Composite" | ASK | 8,0 | with coiling | 11,9 |
| 10,0 | 17,9 | |||
| 12,0 | 26,9 | |||
| TSA | 8,0 | with sand coating | 13,9 | |
| 10,0 | 23,9 | |||
| 12,0 | 38,9 |
Fiberglass reinforcement PC "Composite"
| Manufacturer | Brand | Diameter, mm | Outer layer type | Cost (as of September, rub./p. meter |
|---|---|---|---|---|
| "ArmatSoyuz" | SPA | 4,0 | with coiling | 6,9 |
| 6,0 | 7,9 | |||
| 8,0 | 11,5 | |||
| 10,0 | 17,5 | |||
| 12,0 | 26,9 | |||
| 14,0 | 42,9 | |||
| 16,0 | 60,9 | |||
| 18,0 | 94,9 |
Fiberglass reinforcement "ArmatSoyuz"
| Manufacturer | Brand | Diameter, mm | Outer layer type | Cost (as of September, rub./p. meter |
|---|---|---|---|---|
| "Armplast" | ASK | 4,0 | with coiling | 5,5 |
| 6,0 | 7,9 | |||
| 8,0 | 11,5 | |||
| 10,0 | 17,9 | |||
| 12,0 | 26,9 | |||
| 14,0 | 42,74 | |||
| 16,0 | 60,52 | |||
| 18,0 | 94,32 | |||
| 20,0 | 117,6 | |||
| 22,0 | 138,99 | |||
| 25,0 | 180,17 | |||
| 28,0 | 223,10 | |||
| 32,0 | 292,74 | |||
| 36,0 | 312,80 |
Fiberglass reinforcement "Armplast"
Based on the use of spas, individual developers and professional builders leave their reviews on the Internet. Here are some of them:
Video: review of use when pouring a foundation
Feedback on pouring a slab foundation:
Fiberglass or composite reinforcement is an alternative to steel products and is used to strengthen concrete in cases where its physical and chemical properties are presented special requirements. Fiberglass does not deteriorate from moisture; its weight is 9 times less than that of steel of the same strength. Thermal conductivity indicators help reduce heat loss, and the temperature range is from -70 to 120 degrees. This material is used to reinforce concrete tanks at chemical plants, bridge supports and foundations. It is suitable for bonding multi-layer masonry walls and strengthening floors and screeds. Fiberglass is used in road construction during the construction of embankments and coverings.
Manufacturing technology
The main components of fiberglass rods are fiberglass and epoxy resin. First, the threads are impregnated with an adhesive, and then undergo a polymerization process. To do this, they are pulled through dies required diameter. At the final stage, a relief is applied to the smooth surface by rolling between rollers that have appropriate corrugation. In this way, light yellow colored rods are obtained that have optimal adhesion to concrete. The products have a diameter from 4 mm to 2 cm. In addition to fiberglass, basalt, carbon and aramid fibers are used in production. In this case, the products differ in color and may have longitudinal ribbing. To obtain structures from reinforcement, fiberglass is bonded using plastic elements.
Advantages and disadvantages of fiberglass products
Fiberglass products are characterized by increased tensile strength and are three times superior to steel reinforcement in this indicator. The density of fiberglass is much less than that of metal, and accordingly the weight is also much lighter, which makes it possible to lighten the concrete structure. A significant advantage is that plastic does not rust, even if it comes into contact with water, including sea water. The material does not react to the effects of alkalis, acids and other active chemicals. It does not collapse in the cold and can withstand an unlimited number of freezing/thawing cycles. Fiberglass has low thermal conductivity, which helps improve this characteristic of concrete products with composite reinforcement. In addition, composites and concrete have approximately the same coefficient thermal expansion, therefore such structures are not subject to cracking. The fittings are dielectric and do not interfere with radio waves. It can be produced in any measured length. Thanks to the special properties epoxy resin long products can be wound into coils, and then restored to their original straight state, while maintaining their integrity and all their strength characteristics.
Fiberglass is significantly inferior to steel in elasticity, that is, it bends quite easily. For this reason, its use in floors must be accompanied by careful calculations. The material is fireproof, but at a temperature of about 600 degrees it softens and loses its mechanical properties. In hazardous industries, it is necessary to ensure thermal protection of structures with such reinforcement. The strength of composite joints when creating a lattice leaves much to be desired. Alternatively, steel rods are attached to the ends of the fiberglass and welded. When manufacturing structures of a special shape, it is necessary to order reinforcement with a certain bend, since to give it required type It won't work on the spot.
In many respects, composite reinforcement is becoming a good alternative to traditional reinforcement materials. This product is quite new on the market, but has already established itself as a functional product that can completely replace metal in some situations. Buy composite reinforcement worth it for a number of reasons, which we’ll talk about in a little more detail.
Types and production
The production of composite reinforcement GOST 31938-2012 requires several relatively simple operations that can be implemented even in a modest workshop. They are identical for all types of products that are presented:
- fiberglass-based products;
- carbon fiber;
- based on basalt fibers.
There are other types of products in this class, such as those made from aramid fibers, which are less common. They are produced using a method similar to those indicated: fibrous, durable material impregnated with polymers that act as a binder. At the same time, the positive side of products in comparison with steel products is attractive price composite reinforcement.
If we consider the manufacturing stages in more detail, the example of fiberglass profiles is indicative. It all starts with drying the fibers, then they are unwinded, impregnated with binders and finally polymerized. Modern equipment allows you to automate all stages of production and arrange them within a single production line, which allows you to get maximum output finished products at minimal cost.
Composite reinforcement GOST 31938-2012 of the type in question is made from glass screws. This material becomes the product of melting aluminoborosilicate glass, which is heated to a certain temperature and then drawn into the form of a thread. Such an element has a thickness of no more than 20 microns. Next, such blanks are impregnated with lubricant and collected into a tight bundle. The basis of GOST composite reinforcement can be not only glass, but also basalt fibers; aramid and carbon fibers are less commonly used. It is worth emphasizing that state standard for these types of products came into force just a few years ago (in 2012), despite the fact that building materials have been used in our country for more than a decade. Abroad, in particular in Japan, Europe and America, similar standards have already been in place for many years, which became the basis for manufacturers before the adoption of the document.
In addition to the specified material, other types of raw materials are used:
- resins;
- braided threads, which are a rovint that wraps a prepared rod in the form of corrugations, which have steel reinforcement;
- ethanol;
- acetone;
- Dicyandiamide.
The manufacturing process begins after 60 threads of rovint are fed using a creel to the tensioning mechanism. Next, the device arranges the elements of future basalt reinforcement or another type in the required order and it is dried. Then preheating is carried out using a jet of hot air. After this, the heated rovint is immersed in a bath with a special impregnation composition. Next, the workpiece is pulled through special units (dies). As a result, composite reinforcement of a given diameter is formed, after which it is sent to the next operation, which is performed by the wrapper. This device winds corrugations of the required thickness onto a rod. It is worth emphasizing that these elements can be thick or thin. The first type of winding is intended for products with a smooth surface, and the thin type is for products with sand powder. After this stage, the composite reinforcement GOST 31938-2012 moves into a tunnel kiln, at the entrance to which a mechanism capable of covering the surface with sand evenly is placed. During this stage, accelerated polymerization of resins occurs. Next, the hot workpiece is fed into a cooling bath with a stream of water. Then, the production of composite reinforcement involves feeding it to a pulling mechanism, at the output of which it is cut into elements of the required length.
- the tensile strength of metal is 390 MPa, fiberglass - 1300;
- relative elongation reaches 25 and 2.2 percent, respectively;
- density in tons per cubic meter - 7 and 1.9 units each;
- the diameters of steel profiles vary between 6-80 mm, and the cross-section of composite reinforcement is 4-25 mm;
- the form of delivery of polymer products depends on the wishes of the customer, but for metal this aspect is strictly regulated by GOST, although it implies several options;
- In terms of environmental friendliness, both types of materials are acceptable, in particular, fiberglass reinforcement belongs to class 4 and is regarded as low-hazard;
- the durability of steel structures is assessed in accordance with construction standards, polymers last at least half a century according to standards;
- according to the possibilities of selecting alternatives based on physical and mechanical properties, for example, steel reinforcement with a diameter of 8 mm corresponds to 4 mm of composite, and 20 mm corresponds to 16 mm.
If you compare the prices of composite reinforcement with metal, then you may not see much difference, however, the benefits of its use consist of its other parameters. In particular, this is a mass that is approximately 9 times lower with equal characteristics, high resistance to negative factors, and others positive sides which were discussed above.
If you have already decided on the need to buy composite reinforcement for your project, then we suggest that you familiarize yourself with the prices of various trusted manufacturers on the Price Monitoring portal. On our website you can compare prices for composite reinforcement from various suppliers and choose a manufacturer that sells all the most common standard sizes of polymer products.
Despite the fact that composite reinforcement is positioned on the market as the latest and high-tech material, the first experiences of its use have been known since the 70s of the last century. For various reasons, this type of material was not widely used in the USSR, although it was used quite actively abroad. Therefore, this is enough for Russia new material. We will study the advantages and disadvantages, as well as the operational characteristics of this type of fittings, based on actual indicators. To begin with, let’s take a closer look at what composite reinforcement is, also known as plastic reinforcement, and also known as polymer reinforcement.
What is composite reinforcement
This is reinforcement, the material of which is rods made of glass or basalt fibers, impregnated with a polymer-based binder. There are also options for manufacturing products from carbon and aramid fibers. According to the material used in manufacturing, such reinforcing bars are called glass, basalt or carbon fiber. Externally, it is quite easy to determine the material of manufacture: fiberglass reinforcement is light with a yellowish tint, basalt and carbon fiber rods are black. Like metal reinforcement, composite rods have a periodic cross-section to ensure the required operating conditions as part of a reinforced concrete structure.
Composite reinforcement
Some manufacturers, in order to visually distinguish fittings of different diameters and to achieve an attractive appearance Color pigments are added to the raw material.
Some manufacturers indicate that colored rods have improved technical characteristics. This is not true. Pigments other than decorative effect, does not in any way affect the quality or performance of the valves.
Types of composite reinforcement
- Fiberglass (FRP) - produced by mixing glass fiber with thermosetting resins, which act as a binder. Distinctive feature this type – high strength with low weight;
- Basalt-plastic (BBP) - it uses basalt fiber as a base and organic resins as a binder. The advantage of the type is high resistance to aggressive chemical environments: alkalis, acids, gases and salts;
- Carbon fiber reinforced plastic (CFF) - consisting of hydrocarbon fibers and, due to its high cost, not in wide demand;
- Combined (AKK) - consists of both fiberglass and basalt fibers.
Polymer reinforcement
Composite reinforcement includes various polymers as binders. Therefore, composite reinforcement is also called polymer reinforcement or polymer composite reinforcement. Since the composite material is load-bearing and the polymer serves only to bind the composite fibers, the name “composite reinforcement” has become more widespread.
Plastic fittings
English-speaking builders refer to composite reinforcement as FRP rebar - from the English. Fiber-reinforced plastic rebar. This is where the designation of composite reinforcement as plastic came from. Sometimes confusion arises due to the fact that fiberglass reinforcement is called plastic and vice versa. In fact, the phrase “plastic reinforcement” means the same as “composite reinforcement”.
Advantages of composite reinforcement
Composite reinforcement is rapidly conquering the construction market, thanks to its outstanding characteristics, and is replacing conventional metal reinforcement. The main advantages of composite reinforcement:
- Resistance to corrosion, immunity to moisture and aggressive liquids significantly increases the durability of structures.
- Significant specific strength (high tensile strength in relation to the density of the material), exceeds the indicators of class A III steel reinforcement by 10-15 times.
- Low thermal conductivity. This property allows you to avoid the appearance of cold bridges in the structure mass.
- Dielectricity increases the electrical safety of premises and eliminates interference during the passage of radio waves.
- Relatively low cost.
- Ease of transportation due to low weight. Composite reinforcement of small diameters can be transported in coils.
A coil of composite reinforcement easily fits into the trunk of a car Disadvantages of composite reinforcement.
Like any building material, along with its undeniable advantages, composite reinforcement is not without some disadvantages that must be taken into account when designing reinforced concrete structures. The disadvantages of composite reinforcement include:
- Low modulus of elasticity of the material. This parameter is 4 times less compared to steel, which negatively affects the operation of composite reinforcement in tension.
- Fragility and non-plasticity. Changing the shape of the rod is impossible without heating, which creates difficulties in the manufacture of mounting loops and embedded parts.
- Low resistance to impact high temperatures. Unlike steel, composite material loses its strength properties already at temperatures of about 150-300 degrees, depending on the type of fibers used in production (fiberglass or basalt plastic).
Scope of application of composite reinforcement
Thanks to your operational characteristics Composite reinforcement can be used in a wide range of building structures and infrastructure facilities, as well as in production repair work. This material is used:
- in structures exposed to aggressive environments: building foundations, structural elements chemical and food industry buildings, agricultural facilities;
- to strengthen foundations under building structures for various purposes;
- in low-rise private housing construction;
- in road construction: as reinforcement road surface, during the construction and strengthening of embankment slopes, to strengthen mixed road elements (for example, asphalt concrete - rails), reinforcement of the roadway of spans (bridges);
- when repairing reinforced concrete structures if it is impossible to install a layer of mortar of significant thickness;
- for the production of cross braces in buildings with walls constructed from different types materials ( gas silicate blocks+ brick, brick + concrete, etc.);
- For layered masonry from small-piece elements with flexible connections;
- structures of residential, civil and industrial buildings, the production of which does not require prestress fittings;
- in structural elements during operation of which electrochemical corrosion is possible under the influence of stray currents;
- in mine workings to strengthen the soil during tunneling.
The use of composite reinforcement for layered masonry of small-piece elements. Due to its corrosion resistance, composite reinforcement is not subject to aggressive environmental influences at the boundary of layers. In this case, the metal may rust. Production technology of composite reinforcement
Due to the similarity of the manufacturing process of the most popular types of composite reinforcement - glass and basalt plastic, let us consider, as an example, the technology for the production of fiberglass reinforcing bars. Technological process is extremely automated, proceeds with minimal human intervention and includes the following stages:
- Preparation of raw materials. At this stage, aluminoborosilicate glass is melted in furnaces to a viscous mass, which is then drawn into threads about 10-20 microns thick. The resulting threads, after being pre-treated with an oil-based composition, are collected into a thicker bundle called roving.
- Using a creel, a special mechanism that allows up to 60 roving threads to be fed simultaneously, the glass fibers are fed into the tension mechanism.
- After equalizing the voltage, the threads arranged in a certain order are subjected to heat treatment hot air to remove moisture, oil and various types of contaminants.
- The cleaned and assembled roving is immersed in a bath of binding resins heated to a liquid state for thorough impregnation.
- The impregnated threads are sent to a spinneret - a device through which a rod of the required diameter is drawn. In the case of manufacturing reinforcement with a spiral winding, the rod is wrapped in parallel with a roving thread of a given thickness.
- The formed rod enters a tunnel oven to polymerize the binder composition.
- Cooling of the resulting fittings with running water.
- Depending on the diameter of the resulting products, they are either wound onto special equipment into coils, or cut into rods of a given length.
creel - a fiber feeding device for joining into one thread Comparison of technical characteristics of composite and traditional steel reinforcement
| Characteristic | Steel reinforcement class AIII | Composite reinforcement |
| Density, kg/cub.m | 7850 | 1900 |
| Relative extension, % | 14 | 2,2 |
| Tensile strength, MPa | 390 | 1100 |
| Modulus of elasticity, MPa | 200000 | 41000 |
| Produced diameter, mm | 6 — 80 |
4 – 24 – domestic 6 – 40 – imported |
| Equal strength replacement at a load of 25000 kg/sq.m | Diameter 8 A III, cell 140x140 mm, weight 5.5 kg/sq.m | Diameter 8 mm, cell 230x230 mm, weight 0.61 kg/sq.m |
| Replacement of reinforcement diameter with equal strength characteristics, mm. | ||
| Available length, m. | 6 — 12 | 6 – 12 or upon request |
Features of reinforcement of structures with composite reinforcement
For a craftsman who has experience working with conventional reinforcement, reinforcement with composite materials will not cause any difficulties. As when working with steel bars, the diameter of the rods and the size of the cells when laying composite reinforcement are determined by calculation based on the required bearing capacity designs. Reinforcing bars in case of pouring monolithic structures are placed in the formwork with a certain step and tied together with knitting wire or ordinary electrical plastic clamps of the required length. The latter option is possible due to the small mass of the reinforcement bars.
Fastening the reinforcing mesh with clamps 
Please note that when using a knitting wire to quickly attach it, you will need special devices - a crochet hook or an automatic knitting machine. When using plastic clamps, fastening is done manually.
To connect composite reinforcement, special reinforcement clips, which are also made of plastic, are easy to use.
Connection with reinforcement clips. 
Reinforcement clips. Welding of composite reinforcement is impossible due to the dielectric properties of the material; the assembly of meshes and frames is carried out in the same way.
The calculation of composite reinforcement is carried out according to the same principles as for metal reinforcement. The only exception is that the metal rods obtained during the calculation are replaced with rods made of composite reinforcement of a different diameter with similar strength characteristics. You can read more about calculating reinforcement for the foundation in the article:.
To distance the grids when pouring floors, special devices are produced that can be purchased at any construction market or building materials store. They are also called fasteners or clamps for reinforcement. Read more about various types You can read about fasteners and their features in a special article: .
Reinforcement clamps allow you to set the required distance between the reinforcement mesh, walls and foundation base Bending of rods of such reinforcement under conditions construction site impossible - the rod will either break under load or return to its original state after removing the bending force. If it is necessary to obtain a curved element, it must be ordered from the manufacturer according to your drawings, since it is possible to give any shape to the rod only at the stage of its manufacture.
Curved composite reinforcement is obtained during its production process. Selection and cost of composite reinforcement
There are two types of reinforcement available on the market: smooth and periodic. At the same time, smooth reinforcement has a coating containing sand for better adhesion to concrete. The risk of using a smooth rod is that if it is manufactured poorly, the layer of sand coating may peel off and the effectiveness of such reinforcement of the structure will be reduced to almost zero. It should also be taken into account that reinforcement with a periodic cross-section takes up the load and works better as part of a structure than smooth reinforcement, therefore, for use in critical load-bearing elements of a building, it is advisable to choose this type.
The cost of one linear meter of reinforcement depends on the diameter. On average, composite reinforcement with a diameter of 4 mm costs 5-10 rubles per linear meter (lm);
6 mm. — 10-15 rubles per linear meter;
8 mm. — 15-20 rubles per linear meter;
10 mm. — 20-25 rubles per linear meter.
In addition, the cost of reinforcing bars made of composite materials directly depends on the manufacturer and location of production. For example, the cost of a linear meter of reinforcement of the same cross-section from the Obninsk plant and a manufacturer from Nizhny Novgorod differs by more than a ruble, while products from foreign manufacturers will be even more expensive. At first glance, a small difference in price when calculating the required volumes of material may not be so noticeable, because to reinforce an area of 10 x 10 m. reinforcement mesh with a cell 20 x 20 cm, you will need 1000 meters of reinforcement. When purchasing reinforcing material for a fairly large object, the difference in amount can become quite impressive.
The use of composite reinforcement in construction allows you to effectively save money not only due to its low cost compared to steel bars. Due to its low mass, it significantly reduces the weight of the structure, which in turn makes it possible to reduce the overall dimensions of foundations and other load-bearing elements, while saving concrete costs.
Fiberglass reinforcement is a building material that is made from glass roving, connected using an epoxy compound based on thermoactive resins. The main feature is lightness; the mass per unit volume is only 2g/mm³. Working with fiberglass reinforcement is more convenient and economically feasible than working with metal reinforcement. Significantly lower costs are required for logistics and directly during reinforcement.
In addition, due to the fact that fiberglass does not react to an aggressive environment, the reinforcement therefore protects concrete from premature destruction, thereby increasing the service life of the object. Fiberglass reinforcement reacts to temperature changes similarly to concrete, which also has a good effect on the strength of the structure.
The strength of fiberglass compared to metal is 2.5 times higher. At the same time, the thermal conductivity index is 100 times lower than the thermal conductivity index of steel. Therefore, a structure that is reinforced with fiberglass does not freeze (does not form “cold bridges”) and a building built using fiberglass will be warmer than a building based on metal reinforcement. This allows you to reduce heating costs, and therefore the material is actively used in the construction of modern energy-efficient buildings.
Another undeniable advantage that may be of interest to builders is the fact that fiberglass is a surprisingly durable material, which for 100 years after installation does not require additional repair work. This is what fiberglass reinforcement for foundations is famous for.
Fiberglass reinforcement has found its application in many areas of industry, construction, and public utilities:
- in construction, it is used in the construction of civil and industrial construction projects as a basis for foundations, floors, beams, as well as in the construction of earthquake-resistant belts;
- In the construction and repair of roads, reinforcement is used in the construction of embankments, road surfaces, in the construction of bridges and highway barriers. It is resistant to reagents applied to road surfaces(for example, anti-icing reagents), therefore it can be used both in Moscow and in colder regions.
Fiberglass reinforcement will be an ideal basis for concrete and brick structures. It is used in the creation of supports for power lines and lighting, in the construction of road, sidewalk and fence slabs, as well as in the installation of sleepers on railway tracks. Reinforcement for floors, where a mesh of reinforcement is used, even together with metal, has become widely used.
Fiberglass is applicable in such building structures How monolithic foundation and foam concrete. It is also actively used in the creation of structures that must have increased resistance to chemicals, for example:
- during the construction of storage facilities for chemical waste and components;
- when installing sewerage systems, water pipelines, land reclamation systems;
- during the construction of port facilities and during the strengthening of coastlines.
Despite the uniqueness of the product, the price of fiberglass reinforcement in Moscow, which is indicated on our website, is available material both for construction organizations and individuals. Its cost is 40-50% lower than the cost of steel reinforcement, which allows you to significantly reduce costs and at the same time improve the quality of constructed objects. In general, composite reinforcement can be called one of the most reliable and efficient building materials of our time.
This reinforcement is made from straight strands of glass or basalt fibers (ASP and ABP, respectively), which are collected into a bundle, impregnated with a thermosetting polymer binder, molded, heated (polymerized) and cooled. The result is a monolithic rod of high strength, which, according to test results, is 3 times higher than the tensile strength of steel, and the weight, in an equal strength ratio, is 9 times less.
Standardly manufactured in the form of rods of any length, at the request of the customer. With a diameter of up to 8 mm inclusive, it can be manufactured in the form of coils (coils) containing 100 meters of reinforcement. dimensions coils: height – up to 8 cm, diameter – up to 1 meter.
release form
With a diameter of 10 mm and 12 mm, it can be manufactured in the form of coils (coil fittings) having a length of 50 meters. Overall dimensions of the coil: height – up to 5 cm, diameter – up to 1.5 meters.
By agreement with the customer, it is possible to produce rods and coils of any length.
Can be manufactured with a smooth, construction, periodic profile:
- ASP-ABP of periodic profile, used instead of steel reinforcement class A-I II (A-400);
- ASP-ABP smooth profile, are used instead of steel reinforcement of class A-I (A-240).
Fiberglass reinforcement is becoming more and more popular and its use is becoming more and more relevant every year, because it is a complete replacement for traditional steel rods different brands. High strength indicators, optimal operational properties, small specific gravity And low price- these are the factors that determine the popularity of the use of reinforcing non-metallic elements in all areas of construction.
