16.3. Fibre-Reinforced Concrete

Try these first

1. 1.

   What is fibre-reinforced concrete?

   Hint

   Think about what additional material is used with concrete.

2. 2.

   Name one application of fibre-reinforced concrete.

   Hint

   Where is tough concrete commonly needed?

3. 3.

   What is a primary benefit of adding fibres to concrete?

   • Increased compressive strength
   • Increased tensile strength
   • Increased setting time

   Hint

   Think about which property is affected most by tension.

4. 4.

   True or False: The addition of fibres can improve ductility in concrete.

   • True
   • False

   Hint

   Consider how materials behave under stress.

5. 5.

   A concrete mix with 1% steel fibres shows difficulty in workability. Discuss adjustments that can be made to improve this.

   Hint

   Think about how water and additives influence the handling of concrete.

6. 6.

   Design and justify a fibre-reinforced concrete that will be used in bridge construction. Consider environmental factors.

   Hint

   Consider both strength and environmental performance in your design choices.