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Steel Fibre Reinforced Concrete

Conventional practice usually concentrates welded wire fabric reinforcement within a single plane of a floor slab.

Fabric does very little to reinforced the outer zones, which is why spalling is common at the joints and edges. The primary function of welded wire fabric is to hold the floor slab together after the first small hairline cracks have propagate to larger fractures. This serves to maintain some degree of “structural integrity”.

Conventional wisdom’s approach to floor slabs is to maintain "material integrity" through SFRC mix designs. This integrity is accomplished by:

Benefits

  • Significantly reduced risk of cracking
  • Reduced spalling joint edges
  • Stronger joints
  • High impact resistance
  • Greater fatigue endurance
  • Reduced maintenance costs
  • Longer useful working life

Advantages

  • Reinforcing concrete with Steel fibres results in durable concrete with a high flexural and fatigue flexural strength, improved abrasion, spalling and impact resistance
  • The elimination of conventional reinforcement, and in some cases the reduction in section thickness can contribute to some significant productivity improvements. Steel fibres can deliver significant cost savings, together with reduced material volume, more rapid construction and reduced labour costs
  • The random distribution of Steel fibres in concrete ensures that crack free stress accommodation occurs throughout the concrete. Thus micro cracks are intercepted before they develop and impair the performance of the concrete
  • Steel fibres are a far more economical design alternative
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