Tesla Fiberox s.r.o




The perfect alternative to traditional concrete reinforcement with steel bars.

Reinforced concrete – concrete reinforced with steel bars

  • The basic defect of reinforced concrete is the susceptibility of the steel used to reinforce it to corrosion
  • The corrosion effects destroy concrete, so it is not a durable material
  • Structures made of reinforced concrete require expensive maintenance and repair


Composite concrete - concrete reinforced with FiberoX composite bars

  • FiberoX composite bars are corrosion-resistant in general
  • Concrete structures that are reinforced with FiberoX composite bars are free from the defects in reinforced concrete structures
  • FiberoX composite bars perfectly fit into the balanced development strategy of the building industry


According to the Balanced Development Strategy, “buildings must be designed using materials that do not require costly maintenance and repair and ensure that the various materials are easily separated from each other for repair and dismantling”.

One of the basic materials used in construction is concrete. It is a pressure-carrying material and its tensile strength is very low.

An increase in tensile strength is achieved by combining concrete with steel bars, whose role is to strengthen it. The result of such a combination is reinforced concrete, commonly used since the 19th century. Unfortunately, such a solution has one fundamental error related to the corrosion of the steel used to reinforce the concrete. Reinforced concrete structures are often threatened by the harmful effects of moisture, salts (used to defrost the surface), frost, frequent temperature changes and loads. The long-term effect of these factors on reinforced concrete leads to the corrosion of the bars. The corrosive effects of the reinforcement damage and cause fissures and cracks in the concrete. Reinforced concrete is not a durable material and therefore requires frequent maintenance and high repair costs.

Among other things, it causes great problems during disassembly, associated with the need to extract the steel bars from the concrete before it is crushed.

These problems led to the search for new, better concrete reinforcement materials with high tensile strength and high resistance to corrosion.

FiberoX composite bars made of glass fibre are the ideal solution meeting the above requirements.

Out of all materials, composites have the most favourable resistance-to-weight ratio and are generally corrosion-resistant, even in alkaline environments. Among other things, they are a firm material, do not require maintenance and repair, and they are not problematic during dismantling work because you can crush the concrete together with the composite bars inside. Therefore, the composite bars perfectly fit into the strategy of balanced construction.

Vlastnosti kompozitných tyčí FiberoX

  • Tensile strengthFiberoX composite bars are characterised by their 2.5 to 3 times higher strength compared to AIII grade steel.
  • Resistant to corrosion – they are a firm material with a long life, resistant to water and salt-water.
  • Lightweight – 4 times lighter than steel bars, they are easy to handle during manufacturing, storage, transport and on-site use.
  • Chemically resistant – FiberoX composite bars are resistant to chlorides, acids and chemicals and can be used in both acidic and alkaline environments.
  • Non-magnetic – they do not prevent the penetration of electromagnetic waves.
  • Dielectric – they are an electrical insulator and do not conduct an electrical current.
  • They do not conduct heat – they are a thermal insulator and unlike steel they do not lose their properties at very low temperatures. The thermal expansion coefficient is similar to the expansion coefficient of concrete, which makes it possible to prevent damage caused by changes in temperature. FiberoX composite bars have more than 100 times lower thermal conductivity than steel bars.


  • Heavy duty equipment operated in industry, such as transformers, can cause currents to be induced in steel reinforcing bars when in close contact with reinforced concrete. This causes the acceleration of their corrosion and the more rapid loss of the resistance of the whole structure. FiberoX composite bars do not conduct an electrical current, so there is no induction phenomenon generated and electrical equipment in their vicinity is operated without losses.
  • In buildings where steel can adversely affect the operation of electronic equipment, non-metallic and non-magnetic reinforcements are required. In addition to being an electrical insulator, FiberoX composite bars are also completely neutral to electromagnetic waves. Thus, they also largely meet the above requirements compared to stainless steel, which is several times more expensive.


This applies to the following structures in particular, such as:

  • Power structures: switchboards, transformer stations in large plants
  • Airports: flight management buildings, radar stations, control towers
  • Testing sites and laboratories
  • Hospitals
  • Military constructions


Common advantages - less concrete thickness, lower logistics costs, faster and easier assembly, waste and loss minimisation.

FiberoX composite bars feature a 2.5 to 3 times higher tensile strength compared to AIII grade steel bars – which means you can use composite bars with a smaller diameter than steel bars to achieve the same degree of reinforcement. The use of a smaller reinforcement diameter makes it possible to achieve considerable savings resulting from a reduction in the thickness of the concrete.

The significant weight reduction allows for additional savings related to the loading, unloading and stowing of the bars on the site. You can safely perform these tasks manually, without the use of special devices such as a crane, coiled steel reinforcement straightener, etc.

Furthermore, the FiberoX composite reinforcement is also produced in coils, which guarantees the optimum utilisation of the entire reinforcement without material losses. We also avoid lengthening the rods through their connection. You can also transport such coils in a small van – there is no need for large trucks.


FiberoX composite bars do not require maintenance and repair, and they are disposed of easily.

Much less energy is consumed in the production of FiberoX bars.

In addition, the use of FiberoX composite bars reduces CO2 emissions.


FiberoX composite bars meet all the requirements for environmental design and, among other things, meet the criteria of the concept of balanced development.

Environmental design essentially overlaps with the concept of the balanced development of construction, which requires that we:

  • Design buildings with a long period of operation and use solid materials that do not require maintenance and repair - Ensure the simple and easy separation of various materials during repair and disassembly works
  • Use materials with a high degree of recycling
  • Avoid materials that generate problematic waste - Minimise the use of high energy-intensive materials


FiberoX composite bars are strong, do not require any maintenance and repair, are easy to dispose of, and do not generate problematic waste.

Much less energy is consumed in the production of FiberoX bars than in traditional steel reinforcement production. It is assumed that in the production of a given amount of reinforcements, in the case of composites, only 20 - 30 percent of the energy used in the production of steel reinforcement is needed.

In addition, thanks to the reduction of concrete resulting from the possibility of reducing the thickness of the cover when using composite bars, we also reduce energy consumption and CO2 emissions. For example, each tonne of cement emits about a tonne of CO2.

FiberoX composite bars meet all requirements related to design, new approaches to construction and to balanced development concepts – they are a pro-environmental material.