Steel fibers are made of cold drawn steel wire with low content of carbon (C) or stainless steel wire (SS 302/ SS 304).
Steel fibers are manufactured in different types: hooked, undulated or flat, according to the construction project. These fibers are used in construction, for concrete reinforcement.
Fiber-reinforced normal concrete is mostly used for on-ground floors and pavements, but can be considered for a wide range of construction parts (beams, pilars, foundations etc) either alone or with hand-tied rebars.
Features
- fiber-reinforcement is mainly used in shotcrete, but can also be used in normal concrete fiber;
- steel fibers reinforced concrete are less expensive than hand-tied rebar, while still increasing the tensile strength many times;
- shape, dimension and length of fiber are important
- a normal size fibre for European shotcrete (1 mm diameter, 0.5 mm length—steel) will increase the concrete tensile strength;
- steel fibers can only be used on surfaces that can tolerate or avoid corrosion and rust stains;
Application
- tunnel lining
- airport runways
- highways pavements
- precast concrete
- shotcrete
- parkings
- anti-seismic builings
Steel fibers
Technical details
| Type of steel fiber |
Size range
(dia. of wire mm) |
Length
(mm) |
flat |
0.175 – 0.42 |
6, 12.5, 16, 25 |
hooked |
0.4 – 1.05 |
25, 30, 50, 60 |
undulated |
0.5 – 1.05 |
30, 40, 50, 60 |
| |
|
| Standards |
ASTM 820/96 |
| |
ASTM C 1116/95 |
| |
DIN 1045 |
| |
|
| Tensile strenght (T/S) |
1.100 N/mm2 |
| |
|
| Shapes |
flat |
| |
hooked |
| |
undulated |
| |
|
| Packing |
in paper bags or cardboard boxes of 20-25 kg, set on wooden pallets (IPPC standards) of about 1 MT, protected by polyethyene shrink, well tied with metalic strips. |
| |
|
| Yearly production |
± 4.000 tones |
| |
|
|
