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Erschienen in:
2023 | OriginalPaper | Buchkapitel
Use of Recycled Carbon Fibres in Textile Reinforced Concrete for the Construction Industry
verfasst von : Vanessa Overhage, Thomas Gries
Verlag: Springer Nature Switzerland
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Abstract
The construction industry is the most resource-intensive sector. With a demand of 4.4 billion tonnes annually, concrete consumes, as the most used material in the world, a huge amount of resources. For the year 2050, an increase in demand of a further 25% is already forecast. The main components of concrete are materials whose resources are limited.
With the use of textile-reinforced concrete, resources for concrete production can be saved compared to steel-reinforced concrete. The textiles used do not corrode and therefore, in contrast to steel reinforcements, do not have to be protected from external environmental influences with a minimum concrete cover. Thus, a low concrete cover is already sufficient, whereby up to 80% concrete can be saved.
A high amount of energy is required to produce the new carbon fibres, so it is desirable to use these already existing fibre materials for as long as possible. It is already technically possible to separate carbon fibres from plastics. Studies show that recycled carbon fibres from carbon fibre reinforced plastic waste still have 80% of the original mechanical properties. A possible field of application for reuse of the recycled material could be in the construction industry. However, the production of inseparable material composites should be avoided. Therefore, the use of recycled fibre materials as textile reinforcement is being investigated in order to enable a separation of the composite components again at the end of the second life cycle of the carbon fibres.