What it is
Precision-ground calcium carbonate filler with engineered particle gradation, formulated to govern rheology, dispersion behaviour, and dimensional stability across high-load industrial formulations. Also functions as a performance additive in blended cement and LC3 systems where particle packing efficiency and hydration control are process-critical.
What it does
- Controls viscosity and flow behaviour for consistent application across coatings adhesives, and compound systems
- Ensures uniform dispersion at elevated filler concentrations without processing loss
- Enhances dimensional stability, surface finish quality, and moulding consistency
- Supports high filler loading efficiency while reducing batch-to-batch variability
- Optimises particle packing in blended cement formulations for improved early compressive strength
- Reduces clinker factor in LC3 systems without compromising strength development
Where it’s typically used
Polymer and rubber compounding, industrial coatings, adhesives, and construction fillers requiring rheology control and processing stability — and as a functional additive in LC3 and blended cement systems where particle packing efficiency and clinker reduction are formulation targets.
Quality options
- CaCO₃ ≥ 95%
- MgO ≤ 1.5%
- Fe₂O₃ ≤ 0.15%
- Acid Insoluble ≤ 1.5%
- Moisture ≤ 0.5%
Size
- 100 - 400 mesh
- D50: 30 - 100 micron
- Custom grading
- Controlled fines and oversize available
Applications
- Rheology modification and viscosity control in coatings, adhesives, and compound systems
- Mechanical reinforcement and dimensional stability in polymer and moulded product formulations
- Dispersion control and processing stability at high filler loadings
- Particle packing optimisation in LC3 and blended cement formulations
- Clinker factor reduction in low-carbon cement systems without strength penalty
- Compatible functional additive in mineral binder and construction material systems
FAQs
If you have questions about limestone products, specifications, or typical applications, the answers below address some of the most common topics. For anything more specific, our technical team is happy to help.
How does CalFill deliver consistent performance across high-load industrial formulations?
CalFill's precision-engineered particle gradation (100–400 mesh, D50: 30–100 µm) governs viscosity, dispersion, and dimensional stability — even at elevated filler concentrations. The result is reduced batch variability and processing confidence across coatings, adhesives, polymers, and compound systems.
Can CalFill support low-carbon cement goals without sacrificing strength?
Yes. CalFill is formulated for LC3 and blended cement systems — optimising particle packing efficiency to reduce clinker factor while sustaining early compressive strength development. It enables manufacturers to meet sustainability targets without a performance trade-off.
What makes CalFill a specification-grade filler trusted across diverse industries?
With CaCO₃ ≥ 95%, Fe₂O₃ ≤ 0.15%, and Moisture ≤ 0.5%, CalFill meets the purity and consistency thresholds demanded by industrial and construction-grade applications. Custom micron grading further ensures it is precisely matched to application-specific formulation requirements — making it a single, scalable mineral solution across sectors.
