Flat End fibres – FE
Flat End fibres are straight fibres with flattened ends. They are sometimes referred to as fishtail.
Through the flattening process, the ends become larger which significantly increases the anchorage of the fibre in the concrete matrix rather than relying solely on the friction between concrete and steel.
Today FE fibers are almost exclusively used in shotcrete applications, due to their low rebound ratio. This fibre type can however also be used in other applications such as precast elements.
The workability of FE fibers is excellent with aspect ratios up to 80. Flat-End fibers should not be used in applications where concrete shrinkage is a primary concern. In order to guarantee anchorage of the flattened ends, it is mandatory that a dense concrete mix with sufficient strength (minimum C 30/37) and fines content is used.
ArcelorMittal FE fibres are currently available in one size only.
| Designation | Length (mm) | Diameter (mm) | Aspect ratio L/D | Tensile strength (MPa) | Data sheet |
|---|---|---|---|---|---|
| FE 65/35 | 35 | 0.65 | 54 | 1150 |  |
