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Research projects on the subject Concrete technology


Completed

AquaCem: Reuse of fresh concrete recycled water in the fabrication process of - in particular - air-entrained and high performance concretes

The research project aims to investigate whether the limitation on use of recycled water in ready-mixed concrete works for air-entrained and high strength concrete that is in place in all three involved countries is justified, or whether it could be abolished.

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Completed

Influence of concrete technology parameters on the moisture storage and moisture transfer in concretes and cement screeds and on the resulting moisture content under different ambient conditions

The present research project intended to systematically examine the effects of the cement type on the drying behaviour of cement-bound screeds. The particular aim was to establish whether the use of CEM II and CEM III cements really affects the drying behaviour of cement screeds.

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Completed

Granulometry of cement main constituents – Influence on the durability of concrete made with cements containing limestone

The aim was to determine systematically the granulometric influences of the main constituents Portland cement clinker (K), limestone (LL), blastfurnace slag (S) and fly ash (V) as well as the substance-specific impacts of the particle size distributions on cement, mortar and concrete properties.

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Completed

Transferability of results from laboratory test procedures to determine the frost de-icer resistance of pre-fabricated paving products in practical conditions

This aim of this research project was to create a secured assessment background for testing the frost de-icer resistance of earth-moist produced concrete paving stones. The proposals could possibly be developed for testing in realistic conditions.

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Completed

Optimisation of concrete compositions based on their serviceability limit state: A step towards a further reduction of CO₂ emissions of concrete production

The target of this research project was to develop a comprehensive database regarding the material parameters carbonation and chloride resistance for different cement types and concrete compositions. The investigations focused on concrete compositions that contain cements with low clinker/cement factors.

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Completed

Boundary conditions for accurately achieving projected concrete properties in the modern 5-material system of diverse concrete constituents

Within the framework of the research project, the intention was to identify the most important influence parameters that are responsible for showing unscheduled properties such as changed consistency, signs of sedimentation, or an accelerated or decelerated strength development in certain cases of fresh concretes which are produced over prolonged periods.

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Completed

Determination of characteristic values based on the degree of hydration for predicting the durability of concrete

Mortar and concrete trials were used to determine characteristic parameters, such as the void filling of the cements, their hydration characteristics, the porosity of the mortars and concretes made with these cements, and the durability of the concretes.

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Completed

Procedures for E II aggregates

VDZ and the Brandenburg Technical University Cottbus-Senftenberg (BTU) investigated whether it is possible to define an alkali sensitivity class E II-S on the basis of the 40 °C concrete test with cloud chamber storage. In addition, criteria for the rapid test procedure and the 60 °C concrete test as well as the BTU-SP rapid test were also derived.

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  • Cement production
  • Cement industry
  • Concrete technology
  • Chemistry and mineralogy
  • Quality assurance
  • Environmental protection

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  • English

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