Low-carbon concrete using fly ash/slag-based binders, with compressive strength classes around 20-65 MPa and at least 60% CO2 reduction reported for Zeobond E-Crete compared to OPC.
01 Physical
Density2200-2600kg/m3
Specific gravity2.2-2.6
Porosity10-15%%
Water absorption5-10%%
Hardness6-7 Mohs scale
UV resistanceExcellent
Chemical resistanceExcellent (except HF)
pH tolerancepH 3-14
Surface roughnessCSP 1-3µm
02 Mechanical
Tensile strength4-7 MPaMPa
Compressive strength20-65MPa
Flexural strength5.5MPa
Shear strength3-5 MPaMPa
Poisson's ratio0.18-0.22
Impact resistanceGood
Creep resistanceLower than OPC
03 Thermal
Thermal conductivity0.8-1.4 W/m·KW/m·K
Specific heat800-1000 J/kg·KJ/kg·K
Thermal expansion8-12 × 10⁻⁶/°C×10⁻⁶/°C
04 Compliance & Fire First question
Combustibility classNon-combustible
Fire resistance level>=240minutes
Ignition tempN/A°C
Flame spread index0
Smoke dev. index0
Heat release rate0 kW/m²
05 Sustainability & Health
Embodied carbon>=60% reduction vs OPC
Carbon footprint130-230kg CO2e/m³
Embodied energy2.5-4.5MJ/kg
Water footprint150-250L/m³
Recyclability85-100%
Recycled content80-100 (binder fraction)%
Renewable content0%
Circular score7/10
VOC emissions0 g/L
Toxicity ratingNon-toxic
LEED contribution2-4credits
06 Durability · Cost · Logistics
Expected lifespan50-100+ years
Maintenance interval10-15 years inspection
Warranty period10-25 years
Material cost (range)$280-450/m³
Material cost (per unit)$70-225/m²
Lead time2-4 weeks standard, 4-8 weeks custom
Lifecycle cost20% lower than OPC
Annual maintenance$0-5/m²
Market availabilityLimited - QLD, VIC
07 Assessment
Advantages
At least 60% CO2 reduction vs OPC (reported for Zeobond E-Crete)
Fire rating >4 hours reported for 150 mm slab (E-Crete)
Uses fly ash/slag-based binders
Lower-carbon alternative to OPC concrete
Constraints
Limited Australian manufacturers (QLD, VIC)
Requires Performance Solution for NCC compliance
Higher initial cost than conventional concrete
Alkali handling safety requirements
Variable performance with precursor sources
Limited industry familiarity and design guides
Custom formulation often required
Heat curing may be needed for optimal properties
08 Applications
A1Structural floor slabs and suspended slabs
A2Precast wall panels and facade elements
A3Marine structures and coastal infrastructure
A4Industrial floors requiring chemical resistance
A5Infrastructure projects (bridges, tunnels)
A6Fire-rated separating walls and floors
A7Thermal mass walls for passive design
09 Sources & Standards
Sources pending — citations for this material are not yet recorded.
Verify all figures against manufacturer data and current standards
before specifying.
Currently living and working on the land of the Wurundjeri Woi Wurrung
People.
We acknowledge the Traditional Custodians of this land, whose
sovereignty was never ceded, and pay our respect to their enduring
connection to Country.