Steel Fibre Reinforced Concrete
Steel fibres strengthen concrete by resisting tensile cracking. Fibre reinforced concrete has a higher flexural strength than that of unreinforced concrete and concrete reinforced with welded wire fabric. But unlike conventional reinforcement – which strengthens in one or possibly two directions – steel fibres reinforce isotropically, greatly improving the concrete’s resistance to cracking, fragmentation, spalling and fatigue.
The specific effects on matrix mechanical properties greatly depend on the type and quantity of fibre used. Generally speaking, smaller fibres with a high fibre count offer superior first-crack strength and better fatigue endurance. Should a crack open widely, longer fibres with mechanical anchorage mechanisms offer better post-crack performance.
Steel fibre reinforced concrete is a castable or sprayable composite material of hydraulic cements, fine and/or coarse aggregates with discrete steel fibres of rectangular cross-section randomly dispersed throughout the matrix.
Steel fibre reinforced concrete acts as a uniform composite material. Compared to plain or conventionally reinforced concrete, the most immediate differences are improved ductility and post-crack performance. Steel fibres can be used solely or in addition to the conventional steel mesh or rebar depending on applications, design and specifications.
Enviromesh Steel Fibres
In addition to MSF, Enviromesh also has a range of steel fibres, popularly known as Fibercon. Fibercon steel fibres are widely used in Australian infrastructure projects. Our steel fibres are available in lengths from 38 mm to 50 mm and aspect ratios between 40 and 60. The fibres are manufactured either deformed or hook end and conform to ASTM A-820.
Some of our widely used steel fibres are:
- Fibercon 65/35
- Fibercon 65/60
- Fibercon 80/60
- Fibercon S38
For more information on SFRC and its applications visit www.fibercon.com.au