mineral / Cementitious / Cast Concrete
Steel fibre reinforced concrete (100mm, 150mm, 200mm, 250mm, 300mm structural slab/wall)
Structural concrete with steel fibres for crack control and toughness; fibre tensile strengths typically range from about 1,160 MPa (Dramix 3D) to 2,300 MPa (5D/4D ranges).
Atlas code
MIN-CEM-CC-001
At-a-glance signals
Structural concrete with steel fibres for crack control and toughness; fibre tensile strengths typically range from about 1,160 MPa (Dramix 3D) to 2,300 MPa (5D/4D ranges).
Overview
Executive summary
Steel fibre reinforced concrete (SFRC) uses discrete steel fibres (e.g., Dramix 3D) to enhance post-crack performance and toughness of structural concrete slabs and walls.
Best when…
- Enhanced tensile strength (4.5-7.5 MPa) and post-crack performance
- 40-80% improvement in shear strength
- 3-5× better fatigue resistance than plain concrete
- Reduced construction time (eliminates mesh installation)
- Extended joint spacing capability (4-8m)
- Excellent fire resistance (FRL up to 180/180/180)
- Superior acoustic performance (STC 50-65)
- 70-80% reduction in explosive spalling under fire
- 15-25% improvement in carbonation resistance
- 100+ year service life with proper design
Top advantages
- 01 Enhanced tensile strength (4.5-7.5 MPa) and post-crack performance
- 02 40-80% improvement in shear strength
- 03 3-5× better fatigue resistance than plain concrete
- 04 Reduced construction time (eliminates mesh installation)
- 05 Extended joint spacing capability (4-8m)
Top limitations
- 01 15-50 $/m³ premium over standard concrete
- 02 Requires Performance Solution pathway under NCC
- 03 Engineering certification mandatory
- 04 Limited pumping capability at high dosages (>80 kg/m³)
- 05 Skilled installation crew required
Technical
Physical ·9
- Density
- 2400 kg/m3 AS 3600 material assumption via concreteproperties documentation.
- Specific gravity
- 2.45
- Porosity
- 12 %
- Water absorption
- 3 %
- Hardness
- 7
- UV resistance
- excellent // No degradation of concrete
- Chemical resistance
- good // Alkaline matrix protects steel
- pH tolerance
- 11-13
- Surface roughness
- 6 µm
Mechanical ·7
- Tensile strength
- 2.2-4.1 MPa Concrete Society basic properties (normal-weight concrete classes).
- Compressive strength
- 20-50 MPa Typical normal-weight concrete strength classes.
- Flexural strength
- 6 MPa
- Shear strength
- 10 MPa
- Poisson's ratio
- 0.2
- Impact resistance
- high // 3-5× plain concrete [CSIRO]
- Creep resistance
- good // Coefficient 2.2-2.8 at 30 years
Sustainability & Health
Embodied carbon & energy ·7
- Embodied carbon
- 0.13
- Carbon footprint
- 320
- Embodied energy
- 1.5 MJ/kg
- Water footprint
- 200 L/kg
- Recycled content
- 15 %
- Renewable content
- 0 %
- Circular score
- 75
Compliance & Fire
Fire performance ·5
- Combustibility class
- non-combustible // [AS1530.1]
- Fire resistance level
- 120/120/120 // minutes for 200mm [AS1530.4]
- Flame spread index
- 0
- Smoke dev. index
- 0
- Heat release rate
- 0
Cost & Lifecycle
Capex & lead time ·6
- Material cost (range)
- 350-450 // $/m³ for 200mm application
- Material cost (per unit)
- 400
- Lead time
- 5-10 days // Standard mixes [Holcim]
- Lifecycle cost
- 850
- Annual maintenance
- 0.5
- Market availability
- readily available // Multiple suppliers
Service life & durability ·3
- Expected lifespan
- 50-100+ years // With proper design [AS3600:2018]
- Maintenance interval
- 5 years // Inspection cycle
- Warranty period
- 12 months // Defects liability [Industry standard]
Layer D
Where it's used
Suspended structural slabs (100-300mm thickness)
Industrial warehouse floors
Heavy infrastructure projects
Ground-supported slabs
Retaining walls and basement walls
Precast concrete elements
Shotcrete applications
Marine structures
Mining and tunnelling applications
Bushfire-resistant construction (BAL 12.5-40)