Type IL Cement & Strength Performance
That T-IL cements don’t necessarily have lower strength performance compared to OPC? In fact, many producers are achieving comparable or better performance with PLC, for both early and late-age strength.
The Key?
- Optimising clinker reactivity and kiln burning conditions
- Optimising the milling process conditions and particle size distribution
- Use of performance enhancing grinding additives to enable coarser grinding at comparable strength
- Proper placing, finishing, and curing practices on site
When these factors are optimized, T-IL cements can match or exceed OPC performance across a range of applications.

The effect of specific surface area (Blaine) on concrete strengths (w/cm = 0.49 to 0.51) produced with PLC and OPC from the same cement plant (Thomas et al. 2010)
How Chryso Can Help
Our grinding aids are designed to:
- Improve particle dispersion and hydration kinetics
- Support early strength development
- Enable higher limestone substitution at lower fineness without compromising performance
References
PCA R&D SN3148 – https://www.cement.org/wp-content/uploads/2024/06/2024-SN3148.03.pdf
Thomas, M. D. A.; Cail, K.; Blair, B.; Delagrave, A.; and Barcelo, L., “Equivalent Performance with Half the Clinker Content using PLC and SCM,” 2010 Concrete Sustainability Conference, National Ready Mixed Concrete Association, April 13 to 15, 2010b, Tempe, Arizona.