Steel fiber - these are pieces of wire Ø 0.5-1.2 mm, length 25 - 60 mm. Used to reinforce concrete .
Buy fiber at own expense or with delivery in Ukraine.
The ends of the fiber have a special configuration that promotes strong adhesion to concrete.
Steel fiber is made from low carbon wire .
Complies with TU U 28.7-05393145-004:2005, TU U V.2.7-28.7-00191046-015:2007, EN 14889-1:2006.
Must have tensile strength
for class 1 -1150 MPa,
for class 2 - 1335 MPa and
for class 3 - 1550 MPa.
Steel fiber is used to reinforce concrete throughout the volume. It tends to increase the rigidity and strength of the concrete monolith.
Steel wire fiber , compared to conventional reinforcement, prevents the appearance of cracks during the period when the reinforced concrete sets. This is possible due to the fact that steel fiber reinforced concrete is a uniformly distributed reinforcement inside a concrete structure.
We supply steel wire fiber in boxes of corrugated cardboard of 10, 20, 15 and 25 kg, or weighing 350 kg, 500 kg, 1 ton in soft containers "big bags".
We supply wholesale batches of steel fibers in shipping bags weighing 1125 kg, which are formed from 25 kg cardboard boxes.
Fiber wavy flat 38/3/1mm
Flat wavy fiber has the following parameters: 
- length 38mm +/-1mm;
- width 3mm +/-0.1mm;
- thickness 1mm +/-0.03mm;
- weight 70gr/100pcs;
Flat fiber is a by-product of making blanks for further production of parts and therefore its price is 20% less than the price of wire fiber.
Flat fiber is supplied in 25kg bags.
Advantages of technological steel fiber
The use of steel fiber in some cases has certain advantages over traditionally reinforced concrete. A certain amount of steel fiber (25-50 kg/m3) is evenly distributed in the concrete mixture, resulting in a three-dimensional structure. This steel fiber structure withstands tensile forces and prevents the opening of microcracks, which are often caused by moisture or stress.
As a result, steel-fiber-reinforced concrete has a significantly longer service life compared to steel-reinforced concrete.
Advantages of economic steel fiber
Buying fiber and using it in concrete work means saving material costs and time of work .
There are no delays caused by the installation of standard fasteners, no need to place a grid on the floor, it is possible to produce large concrete slabs with fewer staff. Concrete structures using steel fibers have the best quality, which is expressed in the fact that it increases: 1.5-2 times the tensile strength in bending, 20 times the ultimate tensile strain.
Also, concrete with the use of fiber increases frost resistance, water resistance, corrosion resistance, wear resistance and resistance to shock and seismological effects.
Technology of work with steel fiber.
RECOMMENDED DOSAGES
The amount of fiber in steel fiber concrete per 1 m 3 of steel fiber concrete mix (SFC) is dictated by the requirements for the physical and mechanical properties of steel fiber reinforced concrete. These properties depend on the conditions of use.
The amount of fiber in steel fiber concrete depends on the area of use and is recommended in kg / m 3 :
For industrial floor slabs - 20-40;
For structures of residential buildings - 25-50;
For structures and facilities operated under environmental conditions - 40-70;
For tunnel structures, roads, etc. -50-100;
Depending on the loads on steel fiber concrete structures, the following steel fiber consumption rates per 1 m 3 should be used
With light dynamic load - 15-30 kg/m3
With an average dynamic load - 30-40 kg / m3
With a large dynamic load - 40-75 kg / m3
Strong patterns - 75-150 kg / m3.
Steel fibers are added during, before and after concrete preparation. There is a special conveyor for adding steel fibers, but you can add steel fibers without it.
A more uniform arrangement of steel fibers in concrete is obtained by adding steel fibers to the finished concrete mix.
It is necessary to prevent steel fibers from getting into the concrete mixture in lumps.
LAYING CONCRETE WITH STEEL FIBER
Steel fiber concrete is laid both with conventional vibrators and with steel fiber concrete laying machines. On small volumes manual laying of concrete with steel fibers is possible. When using steel fibers , a high density of concrete is obtained, a more even concrete surface is provided and its physical characteristics are improved.
The final treatment of the concrete surface is carried out by a trowel or hand trowel. Smoothing the surface of fiber- reinforced concrete is carried out immediately after pouring the concrete. The result is a smooth surface, with no protruding parts of the steel fibers . Some types of steel fibers are also produced, which minimize the protrusion of parts of the steel fibers on the surface.
The use of steel fiber.
Steel fiber creates useful properties of concrete: rigidity and strength. These properties of steel-fiber concrete allow designers to design structures that can withstand heavy loads. Concrete with steel fiber (fiber-reinforced concrete) is used in equipment foundations, slabs of airfield runways, highways, shotcrete, anti-landslide slabs and coastal structures, earthquake-resistant structures, for the construction of valuables in banks, in civil engineering, in the installation of self-leveling floors.
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