The dosage of steel fibres varies between 30 – 50kg/m3. It is typical to expect a ground supported slab to be reinforced with 35kg/m3 and a pile supported slab to be reinforced with 45kg/m3.
Steel fibres are added to concrete either at the batching plant or on site. This is must be done in accordance with the manufactures recommendations. It is advisable that fibre washout tests are carried out to verify that the distribution of the steel fibres is acceptable.
The performance of the steel fibres should be assessed in accordance with EN 14651 Test method for metallic fibre concrete. Measuring flexural tensile strength. This test set should consist of a minimum 12 beam samples.