Form · 100–200 mm
Cementitious — indicative fig. M·15
Fire A1 Non-combustibleEmbodied carbon 0.15kgCO₂e/kg LowCompressive 2.8-28MPa StructuralDesign life 20yr
Open-graded concrete with 15-35% voids, pore sizes 2-8 mm, and compressive strength typically 2.8-28 MPa.
01 Physical
Density 1600-2100 kg/m³kg/m³
Specific gravity 1.6-2.1
Porosity 15-35%
Water absorption 5-10% by mass%
Hardness 3-4 Mohs
UV resistance Good
Chemical resistance Moderate
pH tolerance 6.5-10
Surface roughness 2-8mmµm
02 Mechanical
Tensile strength 1-3.5 MPaMPa
Compressive strength 2.8-28MPa
Flexural strength 1-6 MPa (typically 3-4.5 MPa)MPa
Shear strength 1.5-3 MPaMPa
Poisson's ratio 0.15-0.22
Impact resistance Low-Moderate
Creep resistance Moderate
03 Thermal
Thermal conductivity 0.3-0.8 W/m·KW/m·K
Specific heat 880-920 J/kg·KJ/kg·K
Thermal expansion 8-12 × 10⁻⁶/°C×10⁻⁶/°C
04 Compliance & Fire First question
Combustibility class Non-combustible (NCC C2D10)
Fire resistance level Up to 240 minutes (thickness dependent)
Ignition temp Not applicable°C
Flame spread index 0
Smoke dev. index 0
Heat release rate 0 MJ/m²
05 Sustainability & Health
Embodied carbon 0.15-0.25 tCO₂e/m³
Carbon footprint 200-350 kg CO₂e/m³
Embodied energy 1.5-2.5 GJ/m³MJ/kg
Water footprint 150-200 L/m³L/kg
Recyclability 90-100%%
Recycled content 0-30% (RCA potential)%
Renewable content 0%%
Circular score 6/10
VOC emissions Negligible
Toxicity rating Non-toxic
LEED contribution 2-4 points (SS, WE categories)
06 Durability · Cost · Logistics
Expected lifespan 20-30 years
Maintenance interval Annual cleaning
Warranty period 5-10 years
Material cost (range) $240-340/m³
Material cost (per unit) $140-240/m² installed (100mm)
Lead time 3-7 days
Lifecycle cost $300-450/m² (30 years)
Annual maintenance $2-5/m²
Market availability Specialty product - major cities
07 Assessment
Advantages
- Excellent stormwater infiltration (2-6mm/s)
- Reduces urban runoff and flooding
- Groundwater recharge capability
- Sound absorption (NRC 0.3-0.5)
- Lower urban heat island effect
- Eliminates need for drainage infrastructure
- WSUD compliance tool
- Reduced surface water ponding
- Environmental sustainability benefits
- Potential LEED/Green Star points
Constraints
- Lower strength than conventional concrete
- Clogging potential requires maintenance
- Limited freeze-thaw resistance
- Not suitable for heavy traffic
- Higher initial cost than standard concrete
- Requires skilled contractors
- Regular cleaning needed (annual)
- Limited Australian standards
- Potential for ravelling
- Reduced lifespan in high-sediment areas
08 Applications
A1 WSUD-compliant pavements
A2 Car parks and driveways
A3 Pedestrian pathways
A4 Tree surrounds and landscaping
A5 Stormwater management systems
A6 Noise-reducing road surfaces
A7 Permeable hardstands
A8 Emergency vehicle access routes
A9 Recreational courts
A10 Green infrastructure projects
09 Sources & Standards
Sources pending — citations for this material are not yet recorded. Verify all figures against manufacturer data and current standards before specifying.