TECHNOBASALT-INVEST, LLC

Kyiv, 4/6 Suvorova Str., office 1103, 1105 tel. (044) 280-93-61, 494-36-22 fax (044) 280-61-64, 494-36-33 web: www.technobasalt.com

BAYTRADE, FZE

P.O.Box 31291, Al-Jazeera Al-Hamra, Ras Al Khaimah, UAE Tel: + 971 7 206 9777 - RAK Tel: + 971 56 136 8065- Dubai Tel: + 90 532 611 6211 – Istanbul sales@baytradegulf.com web: www.baytradegulf.com

The use of basalt fiber in basalt fiber reinforced concretes

Basalt fiber produced by Tehnobasalt-Invest,LLC is an effective reinforcing additive component to

any cement solutions, including concrete blocks, ferroconcrete products, gas-concrete blocks and foamed

concrete, fire resistant and PS concretes, as well as different dry mixes, etc.

Basalt is a unique construction material with high strength, heat and sound insulating properties. It

practically does not react to temperature changes, stable in all aggressive environments, and is an excellent

facing material. Basalt is a volcanic rock that has poured over the surface.

Basalt fiber is compatible with cement and as opposed to metal, polypropylene and lavsan fibers,

has better adhesion with the cement matrix. Basalt fiber doesn’t have the shortcomings that polypropylene

and glass fiber have.

One of fiber types that have been used in construction are the fibers with an average monofilament

diameter of 13 to 24 microns.

Artificial stone material called concrete has been known to mankind for thousands of years. In spite

of high compressive strength, they, however, have always had the same problem - low resistance at break

and shrinkage cracks during solidification. Many builders are often faced with many challenges while

working with concrete, such as dust, plastic shrinkage and subsidence, the frost effect (at the early stage).

And during further operation shows properties such as low resistance to freeze / thaw cycles, low shock

resistance, abrasion liability, high penetration of water and chemicals. The ancient builders have struggled

with this, adding materials with higher strength and flexibility and materials that increase the uniformity of

the curable mortars. Egyptologists claim that the complex structure of the concrete with the traces of wool,

honey and other ingredients were used for pyramids construction, and a few thousand years after that

builders added egg-white, milk and chopped hair in mortar for Pyatnitskaya church construction near

Chernigov. Thus, the use of fibers as secondary reinforcement has a long history.

It is possible to prevent the cracks formation in several ways, such as secondary reinforcement,

which can be made in structural concrete by mean of steel rebar, and in cover plates by welded wire mesh

or by modifying binder with basalt fibers.

The last method is the most progressive. It eliminates the structural problems associated with the

use of welded wire reinforcement in slabs. In certain dosage fiber replaces secondary reinforcement and

provides concrete flexibility, but does not replace structural steel rebar. The main properties of the fiber as

a secondary reinforcement is a control after flexible subsidence and plastic shrinkage cracks formation,

even water protrusion, increased resistance to abrasion, low permeability, high durability in freeze-thaw

conditions, particulate reinforcement and reduction of labor costs, chemical inertness and good concrete

adhesion.

Polypropylene fiber has its drawbacks: the deformation even at low bending loads, service aging,

that means that it loses its properties over time, it also burns when exposed to an open flame.

The structure of concrete with basalt fibers (basalt fiber reinforced concrete) is close to the

structure of ferro-cement with steel mesh reinforcement. However basalt fiber reinforced concrete has

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higher strength and deformability, as basalt provides a higher dispersion degree of stone reinforcing,

besides basalt has higher strength (18000-25000 kg/cm2) than steel mesh. In addition, basalt reinforced

cement can carry large elastic deformations because basalt fiber doesn’t have plastic deformation at

elongation, and has better elasticity properties than steel. The main characteristics of basalt reinforced

cement are its high durability in all states of stress and the ability to sustain large deformations in the

elastic state. The relative deformation of cement without cracking up is 0.7-0.9%. Such deformation

exceeds the ultimate elongation of plain cement by 35-45 times.

The use of high-quality concrete with special additives, including monofilament fiber

reinforcement provides resistance to temperature, protected from faults, cracks and surfaces flaking, plastic

and eliminates shrinkage cracks, increases the durability of the surface, edges and weld, and resistance to

abrasion and impact. Basalt fiber also provides an early compressive strength, the strength that ordinary

concrete gets only 28 days from the laying date.

Field of fiber reinforcement application:

• Concrete (molding blocks, beams, gas concrete and foam concrete blocks, fire resistant and PS

concretes).

• Concrete floors

• Runways in airports

• Motorway

• Industrial floors in shops where heavy equipment is installed

• Internal reinforcement of tunnels and channels

• Slopes strengthening

• Repair and reconstruction of buildings

• Metal coating surfaces of steel structures

• Concrete water channels

• Fire retardant construction

• Military installations

• Earthquake-resistant buildings

The advantages of basalt fiber reinforced concrete:

• The impact strength of basalt fiber reinforced concrete increases in about 20 times.

• Basalt fiber provide a three-dimensional concrete reinforcement comparing to usual rebar

that provides two-dimensional reinforcement.

• Basalt fiber is not liable to galvanic corrosion, comparing to usual rebar that is an electrical

conductor and can have the cathode effect.

• Construction time reduces due to the needless to install wire mesh.

• The thickness of the concrete layer can be reduced to half.

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• The fiber can be easily mixed.

• The fatigue strength of basalt fiber reinforced concrete increases.

• The total cost of the construction work reduces.

• Reduces the width of cracks.

• You can forget about the difficulties with wire mesh installing.

• In reservoirs and underground water channels thickness of concrete cover significantly

reduces, and construction time becomes shorter.

• The cost of repairs and maintenance greatly reduces due to fiber reinforced concrete long life term .

• The need for concrete floors reinforcement is eliminated because of basalt fiber use, and

construction time is cut in half.

Basalt fibers are applied in the putty and mastics as filler. Basalt fibers as filler can improve the

mechanical properties of the mastic, prevent cracks in the coating in cold weather, reduce mastic fluidity

under the impact of heat.

Fiber reinforced concrete blocks

Basalt fiber is very popular among manufacturers of concrete blocks, concrete blocks and other

blocks of cellular concrete, as well as different types of paving stones and paving slabs.

During production and transportation of foam blocks reinforced by basalt fiber in an amount of

0.6 - 1.2 kg per 1 cubic meter the number of defective foam products is significantly reduced, the quality

of goods is upgraded. Basalt fiber also reduces the initial and final blocks maturing and accelerates

turnover of forms that allows increase in productivity at 50%.

Millions of years basalt has been in the ground, maintaining its properties, which reflects its

durability and environmental friendliness.

Physical and technical advantages that can be achieved by adding basalt fiber

into concrete structure:

- Low level of micro cracks (up to 90%);

- Increased flexural strength (up to 35%)

- Increased concrete fatigue strength and resistance (> 400%);

- Increased frost resistance (up to 35%)

- Increased water tightness (up to 50%);

- Increased surface endurance of concrete (up to 70%);

- Decreased slivering of corners and edges (up to 90%).