Glass Fiber Reinforced Polymer bar

Glass Fiber Reinforced Polymer bar (GFRP)

Continually developing technologies and creating materials with unique features allow to achieve higher results in construction. Building rebar is an ancillary material, and its main purpose is to provide structural strength. GFRP is considered the best in comparison with other existing variants for reinforcing ferroconcrete and masonry constructions. Composite non-metallic reinforcing bars are bars with a spiral transverse riffling. This unique construction material is composed of fiberglass and thermosetting resins. The former guarantees high strength of reinforcing bars, while the latter functions as the binder. Main advantages of the composite fiberglass rebar are its lightness combined with high strength.

Polymer rebar made of fiberglass in building and construction work is the principal competitor for metal reinforcement materials. Its technical characteristics and mechanical-and-physical properties, i.e. hardness and corrosion resistance (inoxidizability) make it possible to apply this kind of rebar as flexible linking members for masonry buildings with three layers of bricks and for buildings with reinforced concrete solid-cast type walls with brickwork casing.

Today fiberglass rebar has found an extensive industrial application in construction industry all over the world, e.g. it is used in construction of skyscrapers in United Arab Emirates, it is more and more used in European countries, and in Japan it is becoming the only kind of rebar to be applied when constructing earthquake-resistant structures (seismic designs).

Advantages

9 times lighter and 3 times more tensile

In comparison with steel rebar from Class A-III, its tensile strength is three times higher. Provided they have identical diameters, the specific weight of composite rebar is 4 times less. When substituted with an equal in strength rebar, composite fiberglass rebar has a specific weight, which is 9 times less in comparison with that of steel rebar.

Glass Fiber Reinforced Polymer bar (GFRP) serves long. Its working lifespan is no less than 80 years

Long service of the material accounts for its ability to preserve properties over a period of no less than 80 years (absolute performance period specified by experts). Its service life is not limited. Use of fiberglass rebar results in minimization of repair work and increases durability of the reinforced construction design.

Resistant to corrosion, alkalies, acids

Corrosion-resistant. Falls under category of materials of the 1-st group of chemical durability, which guarantees that there will occur no cracking and destruction of concrete constructions because of internal stresses that appear due to corrosion of steel rebar. Resistant to alkaliferous substances, chloride salts and acids.

It does not create electromagnetic interferences, does not conduct heat

Composite rebar is extensively used in construction of residential buildings. Popularity of the material accounts for its dielectric properties and low thermal conductivity. Fiberglass rebar is a dielectric material, that is why its use in construction industry in the future will not cause maintenance problems related to electromagnetic interference. Low thermal conductivity of fiberglass provides for additional preservation of heat indoors. Unlike metal rebar, composite rebar does not cause short circuits inside concrete constructions. In composite reinforcing bars there do not occur small currents.

Composite rebar is 50% cheaper than its equal in strength steel counterparts

Use of the given material provides a considerable saving due to several factors: lower expenses on buying the material itself, decreasing costs on delivery, assembly, loading and unloading operations. Besides, economy is provided by lower weight and volume of rebar, and, accordingly, by decreased labour costs.

Simpler and more economic to transport

Reinforcing bars of tradable diameters up to 10 mm are supplied in coils with diameter of ~meters and weight of about 8-10 kilograms. In such form the rebar can be transported in trunk space of the passenger car, in a van or a small truck, while metal fittings are usually transported in long vehicles (more than 12 m), which is much more expensive to rent.

Flameproof

Composite rebar is non-combustible. It is manufactured of nonflammable materials. Its operation temperatures range broadly from -70°C to 400°C. The binding agent of composite rebar is destroyed by prolonged exposure to temperatures above 200°C, but concrete also loses its properties necessary for normal work if exposed to similar conditions.

It is manufactured in reinforcing bars of required length

Reinforcing bars can be delivered both in the form of rods (bars) or in coils of needed length, which saves the customer from excess payments for remaining rebar.

The same coefficient of expansion as that of concrete

When the temperature goes up, metal fittings gradually cause deformation of concrete owing to different coefficients of thermal longitudinal expansion. Fiberglass rebar has the thermal-expansion coefficient similar to that of concrete, that is why such rebar does not destroy it.

It preserves tensioning and strength when exposed to bending

It remains straight when wound in coils, which is very handy for mounting works.

Easy to mount

Joining this kind of rebar can be performed by workers with minimum use of materials and tools. Composite rebar is easy to cut; one can cut it with an angle grinder or a cross-cut, and for cutting the rebar of small diameters scissors or cutting pliers can be applied.

Scope of Applications

Use of composite construction materials made of polymer raw materials can several times increase the working lifespan of constructions in comparison with constructions where there is used metal rebar. It is especially true about building and construction work conducted in corrosive environment, which contains chloride salts and other chemically active substances. Rebar made of polymer raw materials is used for various applications according to requirements of construction designs in the following cases:
• in the course of building industrial and civil objects;
• in the course of road building;
• in the course of building and construction work aimed to create concrete constructions;
• as flexible coupling for three-layered walls of stone constructions, both civil and commercial constructions;
• in the course of work aimed to reinforcing coastlines;
• for different classes of work at ports;
• as mesh and bars in different construction designs;
• in the course of work aimed to construct sewage and irrigation engineering objects;
• in the course of layered bricking;
• when building elements of infrastructure for chemical industry
• when working with the body of the road or road fences;
• in the course of work aimed to mount wall heat-insulation outside the building;
• for objects made of concrete with prestressed or stressed reinforcement, among which there are: power transmission line supports, products applied for constructing manifold groups, etc.
• for creating a seismic resistance belt for buildings that either have been already constructed or are still under construction

Application Examples in Photographs

композитная арматура из стеклопластикастеклопластиковая арматураарматура

Comparative technical characteristics of GFRP bar and steel reinforcement

Comparison characteristics of composite reinforcing bars АКП-СП and steel reinforcement A-III are shown in the following table.
ParameterSteel RebarGlass Fiber Reinforced Polymer bar (GFRP)
MaterialSteelGlass roving, epoxy resin based polymer
Tensile strength, MPa 390 1000-1300
Modulus of elasticity, Mpa 200 000 50 000
Relative extension, % 25 2,2
Density, t/m3 7 1,9
Coefficient of linear expansion αх*10-5/°C 13-15 9-12
Temporary tensile strength, MPa 360 From 750
Corrosion resistance to aggressive environments Corroding Non-corroding material, 1st group of chemical resistance, including the alkaline environment of concrete
Thermal conductivity Transcalent Non- transcalent dielectric
Electroconductivity Electroconductive Non-electroconductive – dielectric
Available profiles, mm 6 — 80 4 — 24
Length 6-12 m rods Any manufactured lengths of rods and hanks
Environmental friendliness Environmentally friendly Sanitary and epidemiological inspection report: no harmful and toxic substances emission
Lifetime In accordance with building standards about 50 years. Not less than 100 years (estimated)
Parameters of equally efficient reinforcing cage with a load of 25 t / m2 For 8 А-III steel rebar the cell size is 14 x 14 cm, the weight is 5,5 kg/m2 For 8 FRP the cell size is 23 x 23 cm, the weight is 0,61 kg/m2 (9 times less)

Example of computation run of economy: composite rebar versus metal rebar. Note, prices have been taken as example on average basis.

Steel RebarPrice, $ per 1 tonWeight of 1 linear meter, kgLinear meters in 1 tonPrice, $ per 1 linear meterInterchange-abilityComposite Fiberglass RebarWeight of 1 linear meter, kgLinear meters in 1 tonPrice, $ per 1 linear meter
⌀8 514,7 0,395 2532 0,20 ⌀4 0,02 50000 0,11
⌀10 514,7 0,617 1621 0,32 ⌀6 0,05 20000 0,15
⌀12 485,2 0,888 1126 0,43 ⌀8 0,08 12500 0,25
⌀14 485,2 1,21 826 0,59 ⌀10 0,12 83500 0,37
⌀16 485,2 1,58 633 0,77 ⌀12 0,2 5000 0,53

Length in meters of metal rebar in one ton according to GOST 5781-82.

Substitution variants: equal in strength fiberglass rebar replaces metal rebar

Concept of equal in strength substitution means that steel rebar is replaced with rebar made of composite materials, while the latter has the same strength and its other physico-mechanical parameters are similar to those of steel rebar. Equal in strength diameter of fiberglass rebar means such an outside diameter, which provides the same strength as the strength of its metal counterpart with set diameter. Substitution data are listed in the table below:

Steel Rebar A-IIIGlass Fiber Reinfoced Polymer bar (GFRP)
6 4
8 5,5
10 6
12 8
14 10
16 12
18 14
20 16

Delivery Options

Composite plastic rebar versus metal rebar shows a significant advantage – it has memory, i.e. it will regain the original shape after it was changed (restitution ability). This ability of composite rebar allows to transport rebar not only in the form of bars (rods), but also wound in coils. The latter is most economical, since it allows a substantial saving of money on transportation, because then there is no need to rent big trucks and hire loading hands. After delivery the customer cuts the material into bars (rods) according to required parameters.

We make deliveries in the following formats:
— With diameters from 4 to 10 mm rebar is delivered in coils 100 meters length;
— With diameters from 12 to 20 mm rebar is delivered in rods. The length of rods is from 6 to 12 m.

Size and volume of coils depending on the diameter of reinforcing bars

Outer diameter of reinforcing bars, mmRunning meters in one coilSizes of the coil, mVolume of the coil, m3
4 100 0,9*0,9*0,045 0,036
6 100 0,9*0,9*0,055 0,044
8 100 1,05*1,05*0,07 0,077
10 100 1,25*1,25*0,09 0,140

Documents and Certificates

Products are manufactured according to the state standard (GOST), there are available all necessary certificates of quality conformance and the expert opinion about compliance of our products with the norms stated in the Integrated Sanitation, Epidemiological and Hygienic Product Requirements.

Expert Opinion about compliance of our products with the norms stated in the Integrated Sanitation, Epidemiological and Hygienic Product Requirements
ISO Certificate (Certificate of International Organization for Standardization)
See more documents and international normative standards .

Prices

icons-bestpriceIf you find better prices elsewhere in the world, just forward the quote to us and we will provide yet better terms.

To find out the price of rebar, availability of products in the warehouse, as well as to order products, please call +7(351)2163300, +7(968)1273083 (ENG). Wholesale buyers are given extra discounts both on products and on delivery.

Presentation of fiberglass rebar (PDF, 3.5MB).

To order rebar

To order plastic reinforcing bars please call from 9 a.m. to 6 p.m. local time, telephones +7(351)2163300, or e-mail to Этот адрес электронной почты защищен от спам-ботов. У вас должен быть включен JavaScript для просмотра.

Are you looking for rebar? We are the company you need! Why us? Because «Composite Group Chelyabinsk» is a manufacturer, and that is why our prices are so attractive!