Dyckerhoff Launches New White Cement Product

Dyckerhoff presented its newly developed CO2-reduced cement Dyckerhoff Weiss BLUE STAR. This pozzolanic cement was approved by the VDZ in mid-June with the standard designation CEM IV/A (P) 42.5 R and has since been included in the delivery programme of the Amöneburg plant.

Compared to CEM I cements, around 15% less CO2 is released during the production of Dyckerhoff Weiss BLUE STAR.

The Dyckerhoff experts have been working for some time on alternative input materials for white cement production in order to reduce the CO2 footprint. In addition to limestone flours, natural pozzolans in particular proved to be suitable input materials to replace clinker.

These are composed of silicic acid, alumina, limestone and alkalis. The interaction of silicic acid with calcium hydroxide (cement) and water results in a pozzolanic reaction.

Dyckerhoff WEISS has been giving new impetus to building and designing with concrete for more than 90 years, and now developing solutions that will also transfer white cement into a CO2-efficient future.

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