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Basic products

  • PREFEN COMPOSITE PROFILES
  • COMPOSITE GRATINGS
  • COMPOSITE COVERS

Structures

  • COMPOSITE RAILINGS
  • WALL-MOUNTED AND FREE-STANDING COMPOSITE LADDERS
  • CABLE RUNS
  • COMPOSITE FOOTBRIDGES
  • COMPOSITE STAIRCASES
  • WATERWORKS STRUCTURES
  • ENERGY INDUSTRY PRODUCTS

OTHERS

  • LAMINATED PRODUCTS
  • Composite ballistic protection plates
  • PREFAPREG SMC
  • PRESSING
  • PREFA REBAR COMPOSITE REINFORCEMENT
  • custom products
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  • Waterworks
  • Chemistry
  • Roads and Bridges
  • Railways
  • Energy Industry
  • Piers and Docks
  • Structural Reinforcement
  • Civic Construction
  • Windows and Doors
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 COMPANY NAME AND ADDRESS

 

PREFA KOMPOZITY, a.s., Kulkova 10/4231, 615 00 Brno, Czech Republic

The Company’s business registration number (IČ) is 26949881,

its VAT registration number (DIČ) is CZ26949881.

It is entered into the Commercial Registry of the Regional Court of Brno, File B-4276.

Tel.: +420 541 583 297, +420 541 583 208

email: kompozity@pre­fa.cz

 

 MANUFACTURING PLANT AND WAREHOUSE

 

Havránkova 11, 619 00 Brno – Dolní Heršpice, Czech Republic

 

 COMPANY MANAGEMENT

 

Chairman of the Board

Ing. Miloš Filip • tel.: +420 541 583 292 • filip@prefa.cz

Director of the company

Ing. Pavel Stryk • tel.: +420 541 583 208, +420 728 082 107 • stryk@prefa.cz

 

 TECHNOLOGY AND SALES

 

Sales manager

Ing. Marek Šlapanský • tel.: +420 541 583 297, +420 606 610 178 • slapansky@pre­fa.cz

Sales assistant

Petra Stryková • tel.: +420 606 076 043 • strykova@pre­fa.cz

Project and technology manager

Ing. Michal Došlík • tel.: +420 541 583 241, +420 734 755 956 • doslik@prefa.cz
 

 DEVELOPMENT AND INNOVATION DIVISION

 

Director of Development and innovation division

Ing. Jan Prokeš, Ph.D. • tel.: +420 724 054 563 • prokes@prefa.cz

Development technician

Ing. Ondřej Sedláček • tel.: +420 724 954 756 • sedlacek@prefa.cz

Development technician

Ing. Ondřej Bezděk • tel.: +420 720 669 848 • bezdek@prefa.cz
 

 PRODUCTION

 

Director of manufacturing plant and warehouse

Ing. Jiří Bechný • tel.: +420 543 521 419, +420 602 510 758 • bechny@prefa.cz

 

 

Contact us:

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Product certificates

Profiles PREFEN  PDF
Gratings PREFAGRID and PREFAPOR   PDF
Covers PREFAPLATE PDF
Railings PREFASAF PDF
Ladder PREFALAD PDF
Composite reinforcement PREFACARB (cz) PDF
Reinforcing rods PREFA REBAR (cz) PDF

Declaration of conformity / Declaration of performance

Profiles PREFEN (DoC) PDF
Gratings PREFAGRID a PREFAPOR (DoC) PDF
Covers PREFAPLATE (DoC) PDF
Railings PREFASAF (DoC) PDF
Ladders PREFALAD (DoC) PDF
Shaft ladders PREFALAD (DoP) PDF
Composite reinforcement PREFACARB (DoP – cz) PDF
Reinforcing rods PREFA REBAR (DoC – cz) PDF

Assessment

Fire interaction class C-s2, d0, construction products (cz)  PDF
Fire interaction class B fl-s1, flooring materials (cz) PDF
Antistatic (cz) PDF
PREFEN – surface resistance PDF
Statement of the Mining Office (cz) PDF
Reference list – Utility  tunnel (cz) JPG
Thermal conductivity (cz) PDF
Anti-slip properties (cz) PDF
Contact with drinking water PDF
Insulating properties of ladders (cz) PDF

ISO Certificate

Certificate ISO 9001:2016 PDF
Certificate ISO 14001:2016 PDF

Catalogs

Product catalog 2019 PDF
Railings and covers (cz) PDF
Leaflet covers PDF
FRP concrete reinforcement (cz) PDF
Leaflet PREFACARB (cz) PDF
Leaflet PREFEN 600HT (cz) PDF
Leaflet SMC PREFAPREG (cz) PDF
Profiles dimensioning (cz) PDF
Key features of PREFEN profiles (cz)  PDF

Program PREFEN

Calculation tables for PREFEN profiles (in Czech l.)  XLS format

 

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MANUFACTURE AND ASSEMBLY OF COMPOSITE MATERIALS AND STRUCTURES

WE MAKE YOUR LOAD LIGHTER…

PREFA KOMPOZITY • Brno • Czech Republic

PREFA REBAR COMPOSITE REINFORCEMENT

FRP composite reinforcement for concrete is a heterogeneous material consisting of two principal components – loadbearing unidirectional fibers suspended in a polymer matrix. The material properties of the resulting composite depend principally on the type and ratio of the components. Compared to standard steel rebar, composite reinforcement is considerably more resistant against corrosives (acids, chlorides, etc.). Composite rebar is corrosion-resistant, very light, electrically non-conductive, EM-transparent, inert when exposed to wandering current, etc. It is ideal for use in concrete structures for the chemistry, energy (power conduits, pipe runs, utility runs), and transportation (resistant to road salt) industries, as well as in foundations.

References

Concrete slab with composite reinforcement
Ceiling reinforcement with carbon slats
Carbon strap passes through a guide for reinforcement
FRP composite web
FRP composite web
PREFA REBAR composite reinforcement

Details

Glass fiber reinforcement
Carbon mat
Composite rod as a ground anchor with milled thread and a wedge socket
Composite rod with wedge clamp
Carbon lamellas
Lamellas reinforced with carbon and glass fibers

COMPOSITE REBAR DESCRIPTION

We produce several basic types of composite rebar for different applications. The reinforcing fibers are glass or carbon, all laid longitudinally. Fiber types include glass (AR or E type), carbon, and others (e.g. basalt). The proportion of fiber in the finished material is 75-80% by weight. The matrix is vinylester, polyester, or epoxy resin. The surface is spiral-wound to maintain its shape; above this is a layer of silicate sand suspended in resin to improve bonding with the surrounding concrete.

  • Additional external reinforcement (PREFACARB) for additional strengthening
  • Additional reinforcement placed near the surface (PREFA REBAR, PREFEN FS, FB)
  • Internal reinforcement (PREFA REBAR) for new structures

PRODUCT CHARACTERISTICS AND
KEY FEATURES

  • Chemically stable: Composite rebar resists chemical corrosion and is suitable for chemical production facilities and wastewater treatment plants. Composites do not react with chlorides and have minimal interaction with acidity (pH).
  • Composites do not corrode in air, and as such do not need to be insulated from it. This enables material savings, as the final structural element is less massive.
  • Composite materials have minimal thermal conductivity and do not form thermal bridges.
  • Composite materials are electrically non-conductive and do not corrode when exposed to wandering current.
  • Composite materials are transparent to electromagnetic waves; i.e., composite structures do not degrade EM signals. Composite rebar can be used in structures adjacent to high-voltage power lines and transformers.

types of materials

  • Glass / polyester – temporary reinforcement
  • Glass / vinyl ester – long-term application
  • Carbon / vinyl ester – long-term demanding applications
  • Carbon / epoxy – long-term demanding applications

Types of reinforced structures

  • Concrete structures
  • Masonry
  • Wooden construction

     

     

System PREFEN FS, FB PREFA REBAR PREFACARB
  Carbon Glass Carbon/Glass Glass Rods Web
Tensile strength (mean) [MPa] 3,000 1,000 1,200 1,000 3,000 4,800
Elastic modulus (mean) [GPa] 155 55 70 50 155 230

NOTE: By selecting suitable materials, mechanical properties can be increased.
The product is patented: Utility models 17951, 17 847, 19307, Patent 302103

 

CONTACT US ABOUT COMPOSITE REINFORCEMENT

Fields marked with * are required
PREFA KOMPOZITY a.s. - Logo

Products

  • PREFEN COMPOSITE PROFILES
  • COMPOSITE GRATINGS
  • COMPOSITE COVERS
  • COMPOSITE RAILINGS
  • WALL-MOUNTED AND FREE-STANDING COMPOSITE LADDERS
  • CABLE RUNS
  • COMPOSITE FOOTBRIDGES
  • COMPOSITE STAIRCASES
  • WATERWORKS STRUCTURES
  • ENERGY INDUSTRY PRODUCTS
  • LAMINATED PRODUCTS
  • Composite ballistic protection plates
  • PREFAPREG SMC
  • PRESSING
  • PREFA REBAR COMPOSITE REINFORCEMENT
  • custom products

Reference Orders

  • Waterworks
  • Chemistry
  • Roads and Bridges
  • Railways
  • Energy Industry
  • Piers and Docks
  • Structural Reinforcement
  • Civic Construction
  • Windows and Doors

Technology

  • WHAT ARE COMPOSITE MATERIALS?
  • PULTRUSION TECHNOLOGY
  • Moulding
  • Manual lamination
  • PRESSING
  • BMC
  • GLUES PRODUCTION
  • PREFEN – product characteristics
  • KEY FEATURES

Development and Innovation

  • Development and Innovation

About the Company

  • Company characteristics

PREFA KOMPOZITY, a.s.

kompozity@prefa.cz
Company name: PREFA KOMPOZITY, a.s.
Address: Kulkova 10, 615 00 BRNO, CZ
Phone: +420 541 583 297, +420 541 583 208
E-mail: kompozity@prefa.cz
Registration number: CZ 26949881
© 2019 Prefa Kompozity a.s., subsidiary company of Prefa Brno a.s.
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