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Description of fibre-reinforced plastic rebar

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INN/KPP: 5905230190/590501001 OKPO: 73888186 OGRN: 1045900843383

Content

Introduction 1

Area of use 1

General non-metallic concrete reinforcement requirements 4

Reinforcement brand indication 4

Geometrical parameters of fibre-reinforced plastic rebar 5

Comparative characteristics of metal and glass-fiber reinforced plastic rebar 6

Non-metallic concrete reinforcement materials 7

Reinforcement 7

Introduction

A new rebar element for construction works is high-strength non-metallic concrete

reinforcement made of composite materials.

Fibre-reinforced plastic rebar represents extrastrong bars with a diameter of 4 to 20 mm of any

face-to-face length with ribbed surface of a helical rebar.

Fibre-reinforced plastic rebar is designed for use in concrete constructions with stressed and

nonprestressed reinforcing instead of traditional steel reinforcing.

Non-metallic fibre-reinforced plastic rebar is produced in the form of bars and coils with a

helical rebar of any face-to-face length, made of glass or basalt fiber imbued with a chemical-resistant

plastic binder.

Area of use

1. Reinforcement is used according to the project documentation requirements together with

project documentation requirements for building structures and buildings of different purpose.

(GOST 31938-2012 Fibre-reinforced plastic rebar for concrete constructions reinforcement,

SNiP 52-01-2003)

2. Reinforcement is designed to be used in industrial, civil and road building.

3. Use in concrete bulding structures and in buildings of different purpose.

4. For use in light and heavy concrete (foam concrete, floor panels, in floor slabs as well as in

monolithic foundations).



INN/KPP: 5905230190/590501001 OKPO: 73888186 OGRN: 1045900843383

5. As expansion bolts for binding of building walls external thermal insulation.

6. As gratings and bars in constructions.

7. As flexible connection of three-layer stone-wall buildings as for buildings of civil, industrial

and agrucultural building, which include bearing layer, facing layer and hard insulation layer.

8. Bank protection.

9. Sea and portside buildings.

10. Canalization, melioration and water disposal.

11. Non-metallic reinforcement can be used in the constructions, which are designed for use in

aggressive environment and under conditions of vagabond currents activity.

12. Roadbed and enclosure.

13. Infrastructural elements of chemical industries.

14. Concrete products with stressed and nonprestressed reinforcing (light posts, electric poles,

insulated bar poles, road and walkway slabs, fence slabs, road edges, posts and supports,

railroad sleepers, shaped objects for collectros, pipeline and line (central heating plants, cable

channels) public systems.

15. When constructing houses with retained formwork.

16. Prospectively for creation of earthquake-proof buildings belts and for already constructed

buldings as well as for ones being constructed. Non-metallic reinforcement can be used in

construction of buildings which are being constructed in earthquake-prone regions.



INN/KPP: 5905230190/590501001 OKPO: 73888186 OGRN: 1045900843383

17. Temperature range use of the constructions made of concrete with non-metallic reinforcement

is from -50ºС up to +60ºС.

18. Non-metallic reinforcement can be used in the underground structures which are being

constructed on the cut-and-cover basis.

19. Use of non-metallic reinforcement is also possible in load-carrying constructions with fire

resistance limit not more than R15.

20. Subway.

Use of non-metallic reinforcement increases constructions working lifespan two- or threefold in

comparison to the use of metallic reinforcement, especially while being influenced by aggressive

environment, including those which contain chlorides, alkalies and acids.

When composed of concrete-steel constructions metallic reinforcement is the most responsible but also

the weakest and the most vulnreable part as well. Under the influence of moisture and alkaline

environment of the concrete, the reinforcement rusts, which leads to the lifespan limitation, as well as

to necessity of maintenance works, and eventually to destruction of concrete-steel constructions. In

this respect, for working lifespan maintenance of concrete-steel constructions fiber glass reinforced

plastic rebar is used, which allows to increase working lifespan of the structures being constructed.

General non-metallic concrete reinforcement requirements In concrete structures non-metallic reinforcement can be used in the form of separate bars, plane

gratings, voluminous frameworks.

Under appropriate feasibility study mixed reinforcement (non-metallic and steel reinforcement) is

allowed.

In case of autoclave hardening of concrete with non-metallic reinforcement thermal and moisture

processing shall be performed at temperatures of 80-85˚С.

Concrete structures with non-metallic reinforcement of AKS and AKB brands shall meet general

requirements, presented for concrete structures with steel reinforcement.

Concrete structures with non-metallic reinforcement shall be provided with the requirable reliability

against all kinds of ultimate limit states by means of calculation, material selection, sizing and

designing according to the requirements of SNiP 52-01, SP 52-101. Herewith technological

requirements in structure fabrication as well as building operational requirements shall be met

according to the appropriate normative documents.

Reinforcement brand indication

AKS brand indication meaning consists of:

А-Арматура (Reinforcement), К-Композитная (Composite), С-Стеклопластиковая (Fiberglass).

AKB brand indication meaning consists of:

А-Арматура (Reinforcement), К-Композитная (Composite), B-Базальтопластиковая (Basalt-

plastic).



INN/KPP: 5905230190/590501001 OKPO: 73888186 OGRN: 1045900843383

Geometrical parameters of fibre-reinforced plastic rebar.

Rebar number AKS 4

АКB 4

AKS 6

АКB 6

AKS 8

АКB 8

AKS 10

АКB 10

AKS 12

АКB 12

Outer diameter

(maximum rebar diameter),

mm

4.0±0.3 6.0±0.3 8.0±0.3 10.0±0.3 12.0±0.3

Cross-sectional area, mm² 8,85 20,41 39,25 64,37 95,77

Inner diameter (minimum rebar

diameter), mm 3.0±0.3 5.0±0.3 7.0±0.3 9.0±0.3 11.0±0.3

Rebar mass 1 r.m., g 20±5% 40±5% 82±5% 130±5% 205±5%

Rebar number AKS 4 AKS 6 AKS 8 AKS 10 AKS12

Design cross-sectional area, Аs,

mm² 7.85 20.41 39.25 64.37 95.77

Characteristic strength under

tension, Rs n, MPа 1300 1300 1300 1200 1200

Design strength under tension,

Rs,, MPа 1150 1150 1100 1050 1050

Modulus of elasticity, Еs, MPа 75000 75000 75000 60000 60000

Rebar number АКB 4 АКB 6 АКB 8 АКB 10 АКB12

Design cross-sectional area, Аs,

mm² 7.85 20.41 39.25 64.37 95.77

Characteristic strength under

tension, Rs n, MPа 1400 1400 1400 1300 1300

Design strength under tension,

Rs,, MPа 1200 1200 1200 1150 1150

Modulus of elasticity, Еs, МPа 90000 90000 90000 70000 70000

Ser.

№ Characteristics AKS АКB

1 Density, kg/m³ 1950 2050

2 Elongation at break, % 2.2 2.2

3 Thermal-expansion coefficient 1/˚С 1х10-5 1х10-5

6 Ultimate stress limit by static bending, МPа 1200 1400

8 Resistivity, Оhm·m 1х1015 1х1015

9 Electric strength, kV/mm 14 14

10 Thermal-conductivity coefficient,

W /m˚ K 0.45 0.45



INN/KPP: 5905230190/590501001 OKPO: 73888186 OGRN: 1045900843383

Comparative characteristics of metal and glass-fiber reinforced plastic rebar.

Characteristics Metallic rebar of А-SH class

(А400С) GOST 5781-82

Non-metallic fibre-reinforced

plastic rebar

(AKS - fiberglass

АKB - basalt-plastic)

Material Steel35ГS,25G2S.

AKS - fiber glass with diameter

of 13-16 micron, connected my

means of polymer;

АКB - basalt fiber with diameter

of 10-16 micron, connected my

means of polymer.

Ultimate tensile strength, MPа 360 1200-AKS

1300-АКB

Modulus of elasticity, МPа 200000 55000-AKS

71000-АКB

Relative elongation, % 25 2,2-AKS and АKB

Behavioral performance under

load under stress (dependence

«stress-deformation »)

Curved line with yield strength

under stress

Straight line with yield-line

strength under stress until the

break

Density, t/m3 7 S 1,9-AKS и АКБ

Corrosive resistance to

aggressive environment

Rusts, disposing product

corrosion

Rustless material of the first

chemical-resistance group,

including alkaline environment

of the concrete

Thermal conductivity Thermopositive Thermally non-conductive

Electrical conductivity Electroconductive Electrically non-conductive

dielectric

Rebars produced 6-80 3,5-12 in prospect up to 20

Length Bars with a legth of 6 - 12 m Any length on customer demand

Longevity As specified by building codes Life expectancy not less than 80

years

Rebar replacement in physical

and mechanical properties

6А-SH

8А- SH

10A- SH

12 А- SH

14А- SH

16А- SH

18 А- SH

20А- SH

4AKS, 3,5АКB

5 AKS, 4,5 АКB

6 AKS, 5,5 АКB

7,5 AKS, 7 АКB

8,5 AKS, 8 АКB

10 AKS, 9 АКB

11 AKS, 10АКB

12 AKS, 11 АКB



INN/KPP: 5905230190/590501001 OKPO: 73888186 OGRN: 1045900843383

Non-metallic concrete reinforcement materials Concrete

For non-metallic concrete reinforcement materials heavy and light concrete of the following classes

and brands shall be used:

quality compression classes: В7,5; В10; В15; В20; В25; В30; В35; В40; В45; В50; В55; В60

quality axial tension classes: Bt0,8; Btl,2; BtJ,6; Вt2,0; Вt 2,4; Bt2,8; Bt3.2;

frost-resistance brands: F50; F75; F100; F150; F200; F300; F400; F500;

water-resistance brands: W2; W4; W6; W8; W10; W12.

Frost-resistance concrete brand: for above-ground structures, at average subzero temperature outside

air in a cold period of the year from -5 to 40 °С, not less than F75; at average subzero temperature less

than -40 °С, the frost-resistance concrete brand is set by a specific substantiation, at average subzero

temperature more than -5°С, the concrete brand is not set.

Water-resistance concrete brand for above-ground structures, at average subzero temperature outside

air in a cold period more than -40°С, as well as for external walls of heated buildings is not set.

Reinforcement

Non-metallic reinforcement represents a bunch of fibers (fiberglass or basalt fiber), situated along the

bar and connected with each other by means of the polymer (hardened with thermosetting plastic). For

increase of adhesion between concrete and reinforcement there is a bunch of fiber with minor diameter

on the main bar.

Non-metallic reinforcement is produced under the AKS brand AKS – fiberglass reinforcement (made

of fiberglass), АКB – basalt-plastic reinforcement (made of basalt fiber). AKS and АКB reinforcement

differ by colour and properties. Reinforcement is produced in the form of variable bars, coils and is

divided by outer diameter – the maximum bar and length diameter. The unit designation of non-

metallic reinforcement in the documentation includes: brand, outer diameter (rebar number).


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