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Knowledge transfer


Current

Reduction of green house gases by process innovations in the primary Industry, SP 6: Development of a methodology for cross-project and ecological potential assessment, cement industry

The transfer and networking project ReInvent aims to provide technical and organisational support for the BMBF funding measure KlimPro-Industrie.

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Completed

Increasing energy efficiency in the cement industry through training by means of virtual reality (VR)

The aim of IGF project 21619 is to develop a training simulator with which learners can independently solve typical process engineering tasks within a virtual reality (VR) environment, particularly in connection with ball mills.

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Completed

BetonQuali - information and qualification platform

"BetonQuali - information and qualification platform", a joint project of VDZ gGmbH and its project partners, aimed to develop and test a training method for semi-skilled and unskilled employees in the concrete industry.

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Cement production


Completed

Development of a high-efficiency SNCR process with staged combustion for reducing NOₓ and NH₃ emissions in cement industry rotary kiln plants with precalcination

The aim of the research project was to obtain general NOₓ emission abatement to 200 mg/m³ with a minimal NH₃ slip of max. 30 mg/m³ in cement industry rotary kiln plants with precalcination.

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Completed

Improving the selection and service life of metallic materials in the high-temperature range of rotary cement kilns, taking into account the relevant gas atmosphere

The aim of this research project was to investigate the issue of high-temperature corrosion in the hot area of the preheater and the rotary kiln.

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Completed

Investigation and optimisation of catalytic methods of reducing carbon monoxide and organic components in the exhaust gas of rotary kiln plants in the cement industry

As part of the IGF research project 17364 N funded by the AiF, studies were performed in conjunction with the research institute of the cement industry (FIZ) and the Institute of Chemical and Electrochemical Process Engineering at Clausthal University (ICVT) on the catalytic reduction of CO and organic components in the rotary kiln exhaust gas of cement plants.

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Completed

Stabilisation of processes with high secondary fuel use through the injection of oxygen in rotary kiln plants in the cement industry

The main aim of the research project was to evaluate the influence of oxygen enrichment on the clinker, on kiln operation and on the use of alternative fuels as well as on the composition of the exhaust gas.

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Completed

Sustainable education for cement industry workers in Russia (BIRUZEM)

At the request of VDZ members with business interests in Russian-speaking regions, VDZ therefore got together with other service providers and universities in early 2013 to work on creating a platform for training courses in Russian in the field of cement production and utilisation.

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Completed

Reducing mercury loads in rotary cement kilns using sorbents

The research project was investigating the extent to which the different types of mercury bond, the alkaline atmosphere and high dust loading influence the effectiveness of possible additives such as activated charcoal, open-hearth coke or other calcium compounds and mixtures of these.

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Concrete technology


Current

Investigations into the fire-induced explosive spalling of ecologically optimised concretes as well as determination of the thermo-mechanical and thermo-physical properties of these concretes

The purpose of the research project is to gain the first systematic scientific findings on spalling behaviour in the event of fire and on thermo-mechanical and thermo-physical properties for concretes with the new clinker-efficient cement types and with recycled aggregates.

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Current

REDOL - Aragon's REgional Hub for circularity: Demonstration Of Local industrial-urban symbiosis initiatives

Redol deals with closing material cycles using the city of Zaragoza as an example. The research project focuses on solid urban waste, which is an abundant source to produce circular products. Five value chains for solid urban waste in the Aragon region will be redesigned in order to be able to produce circular products using an industrial-urban symbiosis approach.

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Current

Fresh concrete properties and hardening behaviour of concretes with clinker-efficient cements CEM II/C and CEM VI

EN 197-5 defined the clinker-efficient cements CEM II/C and CEM VI. Technical approvals for the application of CEM II/C cements have been issued. For a widespread application, it is important that all parties involved develop confidence in the new products. With new findings on fresh concrete properties, hardening behaviour and durability two research projects of the VDZ Concrete Technology Department will provide an important basis for application of these cements in concrete for the construction industry.

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Current

Durability of concretes with clinker-efficient cements CEM II/C and CEM VI

EN 197-5 defined the clinker-efficient cements CEM II/C and CEM VI. Technical approvals for the application of CEM II/C cements have been issued. For a wide application, all parties involved have to develop confidence in the new products. With new findings on fresh concrete properties, hardening behaviour and durability two research projects of the VDZ Concrete Technology Department will provide an important basis for the application of these cements in the construction industry.

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Current

Durability of concrete according to the performance principle - classification of material resistance, production control (PC), conformity criteria and control (CC)

In this project, the systematic classification of the carbonation and chloride penetration resistance of concretes will be investigated. Based on these results, recommendations for action will be derived for production and conformity control within the framework of a performance-based durability concept.

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Current

Reduction of green house gases by process innovations in the primary Industry, SP 6: Development of a methodology for cross-project and ecological potential assessment, cement industry

The transfer and networking project ReInvent aims to provide technical and organisational support for the BMBF funding measure KlimPro-Industrie.

Learn more

Chemistry and mineralogy


Current

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.

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Current

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).

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Current

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.

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Current

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.

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Current

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

The research project was 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 of clinker-efficient cements.

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Current

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.

Learn more

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