Steel Fibre Reinforced Concrete (SFRC) improves which properties?
Choose the correct answer
Primarily compressive strength
Post-crack ductility, toughness, impact resistance, and fatigue life — not primarily compressive strength
Workability and slump
Setting time reduction
Correct Answer
B. Post-crack ductility, toughness, impact resistance, and fatigue life — not primarily compressive strength
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SFRC: randomly distributed steel fibres (hooked-end, crimped, straight) arrest crack propagation, improve post-crack ductility (toughness), impact resistance, and fatigue life. Does NOT significantly improve compressive strength. Used for: industrial floors, tunnel linings, shotcrete, precast thin panels. Fibre dosage: 20–80 kg/m³ (0.25–1% by volume).
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