Speaker
Description
The incorporation of Calcium Aluminate Cements (CACs) into modern building chemistry products enable rapid set, fast hardening and quick drying. Apart from application demands, the CO2 footprint of the products needs to be lowered as well to minimize climate impact. One avenue to reduce CO2 is to decrease the cement content in the product formulation. The patented CAC Flex offers a solution due to its high reactivity. Its key properties are characterized in the first part of this study.
In the second half, the cement saving potentials of CAC Flex are demonstrated by a comparison with CAC 50 and CAC 505 in a Self-Levelling Compound (SLC). The highly efficient CAC 505 offers increased cement fineness when compared to the reference CAC 50. It enables the formulator to decrease cement in the SLC recipe by 10 % without sacrificing performance. The newly developed and patented CAC Flex combines the increased cement fineness with a higher content of the main reactive phase CA. As a result, SLCs containing CAC Flex perform better than the reference even after reducing CAC in the recipe by 20 %. The in-situ XRD and calorimetry investigations presented give insights in SLC phase development and reaction kinetics.
Affiliations
Calucem d.o.o., Revelanteova 4, 52100 Pula, Croatia
| Keywords | CO2 Reduction, Building Chemistry, Self-Levelling Compounds, In-Situ XRD |
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