The primary benefit of adding steel fibres to concrete is to improve:
Choose the correct answer
Compressive strength
Post-crack tensile strength and toughness (energy absorption), reducing brittleness of concrete
Water tightness
Setting time
Correct Answer
B. Post-crack tensile strength and toughness (energy absorption), reducing brittleness of concrete
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SFRC (Steel Fibre Reinforced Concrete): fibres (hook-end, crimped, 25-60 mm long, 0.5-1 mm dia) at 40-80 kg/m3 dosage. Does NOT significantly increase compressive strength; greatly improves flexural toughness, impact resistance, fatigue resistance, and crack control. Used in industrial floors, tunnel linings, precast elements.
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