Concrete can be reinforced by weaving fibres into the material producing a material with improved properties.
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This is the concrete baseline we are going to look at a number of different additives that can be used on concrete. The general benefits of having Fibre reinforced concrete are listed below
- Improved durability of the structure
- Increased tensile and flexural strengths
- Higher resistance cracking during life time
- Improved crack distribution
- Increased fire retardation
However each fibre is not always equal and can add different benefits and introduce weaknesses listed below are a couple of examples.
Increased toughness, crack and impact resistance, increased tensile strength, Improved abrasion resistance,
Increased weight, risk of rust forming lowering durability, higher cost
Lightweight (is about 75% lighter), can be poured or sprayed on surfaces, high strength to weight ratio, doesn’t rot or react with UV
Higher cost, harder to fabricate with, may need outside contractor to mix