WIR!-V1.4
WIR!-V1.4 - Separation of fibre reinforcement from building materials using the electro-pulse method
Univ.-Prof. Dr.-Ing. Dipl.-Wirt.-Ing. Jens OTTO, Dr.-Ing. Jan KORTMANN
© S. Ellger
Senior Assistant
NameMr Dr.-Ing. Jan Kortmann
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Visiting address:
Nürnberger Ei, 4th floor, room 412B Nürnberger Straße 31A
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The proportion of fibre-reinforced building materials will increase massively in the future. Reasons for this include the use of fibre-reinforced concretes (carbon concrete) or the insertion of mat-like layers for fixing mortar or plaster, renovation work or the reinforcement of existing building structures. These new types of reinforcement and building materials represent a high potential for innovation in the construction industry and the expansion of technical possibilities in the realisation of building projects and sophisticated constructions. From the point of view of recycling, however, there are also new challenges that are addressed in this project. The greatest difficulty lies in separating the fibres from the matrix as completely and gently as possible. Mechanical processes are currently used for processing. These are characterised by the fact that the fibres are very heavily comminuted. There is therefore a need for a complementary process to achieve a gentle separation of the reinforcement material from the surrounding concrete matrix as well as a higher selectivity and thus maximise the proportion of material remaining in the material cycle.
The electrical impulse process (EIV) is a promising alternative process in this context. Its performance and efficiency have already been proven in the areas of drilling, separating and processing solid rock (e.g. ores). The challenge is to adapt this process to the changed material parameters and to scale it to the new application scenario so that carbon reinforcement structures are removed from the concrete matrix as a whole and the process is integrated into existing demolition and recycling technologies. This means that the existing plant technology can be retained and challenging materials, such as fibre composites, can still be recycled in a resource-efficient manner.
More information: WIR! recyceln Fasern
Participants:
Bothur GmbH & Co. KG
Maschinenbau Mischke GmbH
WiE GmbH – Werk für industrielle Elektronik
TU Dresden – Professur für Baumaschinen
TU Dresden – Institut für Baubetriebswesen
Duration: 01.08.2023 - 31.07.2025
The project is funded by the "WIR - Wandel durch Innovation in der Region" funding programme of the Federal Ministry of Education and Research (BMBF) under project number 03WIR6011.