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Knowledge transfer


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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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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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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Cement production


Current

AC²OCem - Accelerating Carbon Capture using Oxyfuel Technology in Cement Production

The project investigates the existing 1st generation oxyfuel technology and an innovative 2nd generation oxyfuel concept with the ultimate goal of reducing CO₂ avoidance cost, increasing plant efficiency and strengthening the overall competitiveness.

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Current

CLEANKER – Integrated calcium looping process for CO₂ capture

The aim of the CLEANKER (CLEAN clinKER) project is to perform large-scale testing of this technology as an integrated method (Technology Readiness Level 7). It is planned to treat 4 000 m³/h exhaust gas in a demonstration plant to be connected to an existing kiln line at the Buzzi Unicem works in Vernasca in Italy.

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Current

Development of a method to improve clinker cooling and to increase energy efficiency in cement rotary kilns by using infrared cameras

In the research project, infrared cameras are used to record the surface temperature of the clinker bed in the clinker cooler. Together with calculated enthalpy flows, this allows control room personnel to identify the operating condition of the cooler. This is used in operational tests to optimise the heat transfer in the clinker cooler by controlling the drive system and adjusting the cooling air distribution.

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Current

Optimisation of clinker-efficient cements by means of multimodal particle size distributions using energy-efficient products from separate ultra-fine grinding

Separate ultra-fine grinding of cement - Energy-efficient grinding meets optimised cement and concrete properties. Today, future-oriented cements can already be produced more sustainably and efficiently by using various components of different finenesses.

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Current

Investigation and optimisation of the dynamic operating characteristics of the oxyfuel-operated cement clinker burning process for CO₂ capture

The oxyfuel technology is to be investigated qualitatively using a dynamic process simulation. This will provide a basis for the control and optimization of oxyfuel systems, resulting in a faster rollout of this crucial technology for CO₂ reduction.

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Current

Cement clinker production with simultaneous power generation

The core concept of the research project is to generate the maximum amount of electrical energy from the process exhaust gas during the production of cement clinker without affecting its kiln capacity or clinker quality. The electricity generated should cover the base load requirements for the cement production.

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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.

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Chemistry and mineralogy


Current

Clinker burning with alternative fuels at low process temperatures - effects on coating formation and on the corrosion of refractory products in the cement rotary kiln as well as on the performance of cement

The replacement of primary fuels by alternative fuels is of great economic and ecological importance for the cement industry and is to be increased in the future. The fuel ashes are used as raw material in the cement clinker and influence its properties as well as the coating formation on the refractory lining in the kiln. Exact knowledge of these effects is indispensable for the further increase of the alternative fuel rate and the simultaneous optimisation of the kiln operation as well as for the maintenance of the clinker quality and the service life of the refractory lining.

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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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Completed

Use of X-ray fluorescence analysis to determine trace element contents in cements

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.

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Completed

Resource-efficient use of sulphate-containing process dusts for sulphate optimisation using isothermal heat flow calorimetry

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.

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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

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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Environmental protection


Current

CaLby2030 – Calcium Looping to capture CO2 from industrial processes by 2030

In CaLby2030, the deployment of Calcium Looping technology (CaL) using Circulating Fluidised Bed reactors (CFB) in the cement industry will be investigated, aiming at efficient CO₂-Capture without compromising clinker production or product quality. A technology scale-up will be also evaluated in a German cement plant by exploring different retrofit possibilities. Besides the cement sector, the deployment of CFB-CaL technology in other relevant sectors will also be investigated.

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  • Knowledge transfer
  • Cement production
  • Cement industry
  • Concrete technology
  • Chemistry and mineralogy
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  • Environmental protection

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