Results: Cement chemical optimisation of cements containing fly ash

15.07.2021

Publications

Education and Training Programme 2021/22

With its "Education and Training Programme 2021/22" VDZ supports the efforts of the industry to be successful in the long term through consistent qualification of the workforce. VDZ ensures efficient and practical learning by providing a wide range of vocational training courses and (online) seminars covering technical basics, special technical knowledge and education courses for managers.

01.05.2021

Research projects

Calcined Clays from mineral secondary raw materials

The aim of the research project is to investigate the suitability of previously largely unused mineral secondary raw materials from the stone and earth industry as a resource-conserving and climate-friendly main cement constituent. The use of cal-cined clays from secondary raw materials instead of conventional main cement constituents or high-quality primary clays can make an important contribution to the production of climate-friendly and resource-efficient cements.

01.10.2020

Research projects

Interactions of accelerating admixtures and clinker-efficient cements with several main constituents to improve the early compressive strength of concrete

The acceptance of resource-efficient cements with significantly reduced specific CO₂ emissions is still too low in construction practice. The main reason for this is that early strength is not high enough for economical production processes and also competitive construction with concrete. Accelerating admixtures can improve the early strength of concrete. The research project investigates interactions between concrete admixtures that accelerate the strength development and cements with several main constituents.

01.08.2020

Research projects

Influences of two-stage mixing on the hydration behaviour of Portland-composite cements and composite cements as well as on the concrete performance

The acceptance of resource-efficient cements with significantly reduced specific CO₂ emissions is still too low in construction practice. The main reason is that the early strength is not high enough for economical production processes and competitive construction with concrete. The research project is investigating the extent to which more intensive mixing and further cement constituents besides clinker increase the mixing energy input and can increase the early cement hydration and thus the strength development.

09.01.2020

Publications

100 years of International Cement Chemistry: Discussion of the fundamental principles and performance of binders for sustainable concretes

Cement International 18 (2020) 2, S.10

09.01.2020

Publications

Die Untersuchung der Hochofenschlacke und des Zementes

09.01.2020

Publications

Background radiation from concrete: Exposure to radiation from cement-bonded construction materials is not dangerous

01.01.2020

Research projects

Performance of ternary cements with Portland cement clinker, granulated blast furnace slag and calcined clay as the main constituents

The aim of the research project is the detailed investigation of the performance, durability and hydration behaviour of ternary cements with blastfurnace slag and calcined clay as main constituents (KSQ cements).

01.11.2019

Research projects

Effects of pre-hydration on the performance of cements and the influence of different clinker properties

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.

30.06.2019

Publications

Influences of the oxyfuel cooling medium on mineralogy and microstructure of Portland cement clinker

17th EMABM, University of Toronto, Toronto, Canada, May 20-23, 2019 Hrsg. Proceedings of the 17th Euroseminar on Microscopy Applied to Building Materials, Toronto (Canada), 20. to 23. May 2019