Germany: Buzzi Unicem subsidiary Dyckerhoff has received general building inspection approval from the German Institute for Building Technology for the Portland composite cement CEM II / CM (S-LL) produced in the Amöneburg and Deuna factories. It is the first to receive approval to sell this class of cement, which contains both slag and limestone, in Germany.
The use of CEM II / C cements reduces CO2 emissions from building with cement and concrete due to their lower clinker factor. CEM II / CM (S-LL) emits 39% less CO2 per tonne of cement compared to CEM I cement. Compared to the current status quo of the binder mix, CEM II / C cements have the potential to reduce CO2 intensity by 25%.
The CEM II / CM (S-LL) ‘Amöneburg’ and ‘Deuna’ is authorised for use in strength classes 32.5 N, 32.5 R, 42.5 N, 42.5 R, 52.5 N and 52.5 R. It may be used for the production of concrete, reinforced concrete and prestressed concrete in the following exposure classes: X0, XC1 to XC4, XD1 to XD3, XS1 to XS3, XF1, XA1 to XA3, XM1 to XM3.