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Future requirements

Energy facades made of textile reinforced concrete


About half of the world's population currently live in cities. In 2050 it will probably be two thirds [1]. The densification of the urban areas is thus increasing sharply, which in turn is leading to a high requirement for raw materials and facade constructions that make efficient use of their surfaces [2]. At the same time, building shells must be made even more energy-efficient in future, since all buildings in the EU must be built as minimum energy buildings from 2021 [3]. This goal cannot be achieved by intelligent planning and the use of new materials alone. The increasing use of renewable energies to cover the remaining – albeit lower – useful energy requirement in the building is indispensable. Although the energy requirement is proportionately highest in cities, the energy is generated almost exclusively in the urban hinterland. In order to take the load off the grids and agricultural areas, the already sealed city surfaces are suitable for contributing to the supply of energy. Apart from roofs and infrastructure surfaces, the facade surface can also be activated in the form of a so-called energy facade. The textile reinforced concrete construction method offers the possibility of both raw-material-efficient and energy-efficient design. The extremely thin wall constructions enable highly efficient use of the surface. On the basis of holistic, sustainability-oriented planning principles, the total energy requirement of buildings can be minimised. Textile reinforced concrete facades formed as energy facades also open up the potential to generate and distribute the useful energy required in the building regeneratively. Within the context of a research project, the performance of the energy usage through thermal solar collectors was verified and the distribution of energy through thermo-active building systems conceived. With this construction method it is possible to erect buildings that already meet future requirements today.

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CPi worldwide journals are trade journals for the concrete and precast concrete industry that are published in 12 different language editions in more than 170 countries. These trade journals, with their practical editorial reporting on research, production and applications, are specifically addressing the decision makers of the concrete and precast concrete industry.

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