Fibre Reinforced Concrete and Recycled Fibres

Fibres are used to improve the flexural toughness and ductility of concrete. Fibre-reinforced concrete (FRC) increases speed of construction and may even eliminate the need for conventional reinforcement. FRC is used in a range of specialised applications, such as pavements and thin precast elements (Figure 1).

Research activities in this area include optimisation of fibre sorting and mixing methods, experimental and analytical investigation of the structural performance of FRC, development of innovative FRC products as well as development of analysis and design tools.

Fibres examined include industrially-produced glass and steel fibres as well as fibres produced from post-consumer products, such as tyres (Figure 2).

Figure 1. GRC permanent formwork (left) and cover slab (right) for drainage channels

Figure 2. Steel fibres produced from tyre shredding

Current Topics

  • Behaviour and design of thin glass fibre-reinforced concrete (GRC) elements
  • Concrete reinforced with steel fibres, extracted from used tyres
  • Durability of steel fibre-reinforced roller-compacted concrete
  • Fatigue behaviour and design of steel fibre-reinforced roller-compacted concrete
  • Slurry infiltrated fibre reinforced concrete
  • Thin glass fibre-reinforced concrete (GFRC) elements reinforced with FRP rebars

Figure 3. Placing roller-compacted concrete in asphalt paver

Theses

Graeff A. (2011), Long term performance of recycled steel fibre reinforced concrete for pavement applications, PhD Thesis.

Che Y. (2010), The development and behaviour of premix GRC suitable for mass produced structural elements, PhD Thesis.

Kim G-B. (2006), Development of thin FRP GFRC permanent formwork systems, PhD Thesis.

Tlemat H. (2004), Steel fibres from waste tyres to concrete: testing, modelling and design, PhD Thesis.

Figure 4. Paving of roller-compacted concrete by using an asphalt paver