This code provides guidelines on materials, mix proportioning, properties, and quality control for Fibre Reinforced Concrete (FRC). It covers the use of steel, glass, and polymeric fibres to enhance properties like toughness, ductility, and crack resistance in concrete applications such as industrial flooring, pavements, and shotcrete.
Provides guidelines for design, manufacture, and use of fibre reinforced concrete.
Quick Reference Values
Typical steel fibre dosage20 to 80 kg/m³
Typical aspect ratio for steel fibres40 to 100
Maximum nominal aggregate size20 mm
Minimum individual cube strength for acceptanceCharacteristic Strength - 3 N/mm²
Minimum average strength of 4 consecutive samplesCharacteristic Strength + 0.825 * standard deviation (or 3 N/mm²)
Practical Notes
Proper mixing is crucial to prevent fibre 'balling' (clumping); add fibres gradually to the aggregate or into the prepared concrete mix.
FRC mixes often have reduced workability, so the use of superplasticizers is common to achieve the desired slump without increasing the water-cement ratio.
FRC is typically used for secondary reinforcement to control cracking and improve durability, not as a replacement for primary structural steel reinforcement in major load-bearing members.