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2.3 Composites

Composite materials are made up of different materials which are combined to improve their properties. They can be a combination of natural and synthetic materials but fall into three main categories.

Fibre Based

Fibre-based composites are reinforced with fibres

  • GRP: Glass-reinforced plastic
  • CRP: Carbon-reinforced plastic
  • GRC: Glass-reinforced concrete

Particle-Based

Particle-based composites contain small pieces of material.

  • Concrete
  • Cermet

Sheet-Based

Boards made from wood pulp, chips or layers of veneer.

  • MDF: Medium Density Fibreboard
  • Plywood
  • Chipboard

Fibre-based composites are reinforced with fibres.

GRC is a material made using cement, glass fibre and polymers. GRC is made by spraying or pouring fibre mixes into complex shapes. It takes a week to cure and strengthen before GRC is transported to building sites.