Background and goals of the research project

The results of the studies and the knowledge obtained therefrom should contribute to the systematic determination of the optimal mineralogical composition of clinker with regard to the reactivity of ground granulated blastfurnace slag. The amount of the four clinker phases (C3S, C2S, C3A, and C4AF), and modifications of C3A, were systematically varied in laboratory clinkers, and the interaction of these clinkers with two different types of blastfurnace slag were studied. Furthermore, the influence of different mineralised clinkers on the early strength development of blastfurnace cements was determined. Moreover, aspects of sulphate optimisation were investigated.

The specific adjustment of the clinker blast furnace slag interaction improved the cement performance. As a result, the preconditions for the further development of the economic and ecological advantages which are associated with the use blastfurnace cements were created.


The IGF project 18935 N of VDZ Technology gGmbH was supported by the AiF within the framework of Industrial Collective Research (IGF) of the Federal Ministry of Economic Affairs and Energy on the basis of a decision of the German Bundestag.

Results (German)

Aim of the project was to improve the early strength performance of blastfurnace cements by a systematic adjustment of the clinker phase composition and/or addition of mineralisers in the clinker production process.

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Person to contact

Do you have questions regarding this project?

Dr Jörg Rickert
Chemistry and mineralogy

+49-211-45 78-283

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