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The research project has two objectives. The first is to investigate whether certain chemical / mineralogical properties can make clinker more robust against pre-hydration effects. Secondly, it will be investigated which measures can be taken to counteract possible negative effects, in particular by adjusting the sulphate carrier composition.
The aim of the AiF research project was to identify the causes of the sometimes greater scatter rates in the analysis results in the case of comparison trials for the long-term tank test.
Various cement-chemical optimisation possibilities for cements containing fly ash with different types of hard coal fly ash were intensively investigated. Furthermore, the effects of different clinkers and sulphate carriers as well as mineral additives on hydration and strength development were determined.
The aim of the project was to address open questions of the finished project IGF 17829 N and to develop a method for determining the grading curve of aggregates in hardened concrete.
The research project analysed whether sulphate-rich process dusts can be used to optimise the sulphate content of cements, thereby saving anhydrite/gypsum and, in particular, improving the early strength of cements with several main constituents. Furthermore, it was to be determined whether isothermal heat flow calorimetry can be used as a fast and cost-effective investigation method for this purpose.
The aim of the research project was to develop a procedure for analysing trace elements on cements using X-ray fluorescence analysis. In addition, precision data and application limits were to be determined, which are essential in order to be able to classify the results.
The aim of the research project was to define the procedure for robust and precise dust analyses in factory laboratories in order to enable optimal utilisation of production dusts and to support process control.
As part of the project, methods were developed that allow the cement content, cement type and additive content in hardened concrete to be reliably determined.
