Additive manufacturing with concrete can revolutionize the construction industry. The technology can contribute to the digitalization and automation of construction processes, leading to more efficient and cost-effective construction practices. Furthermore, it enables a radical rethinking of architectural design. Nevertheless, the implementation of this novel production strategy is accompanied by a series of challenges. Integrating reinforcement into the printed structure is one of the challenges to be addressed. An innovative solution is the robotic and dynamic winding of fibre reinforcement strands. New possibilities for reinforcing additively manufactured structures are opened up by this new type of reinforcement integration. To fully utilise these possibilities, three distinct integration strategies for wound reinforcement strands have been developed, namely Core Winding, Frame Winding and Pin-grid Winding. Previous research has shown the feasibility and benefits of integrating wound fibre reinforcement strands into 3D concrete printing in various smaller and larger experiments and demonstrators (including the Shelltonics demonstrator and the Knitcrete bridge), paving the way for more robust and versatile construction methods. The objective of this paper is to evaluate and compare the aforementioned processes in terms of their functional capabilities. Each process is analysed and classified according to its usability and limitations. This classification should support the determination of the most appropriate process for a particular application. The established framework allows the benefits of winding fibre reinforcement strands to be fully exploited, depending on the application.

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Reinforcing of Additively Manufactured Concrete Structures by Dynamic Fibre Winding: A Decision-Supporting Framework

  • Tom Rothe,
  • Stefan Gantner,
  • Philip Thiele,
  • Fatemeh Salehi Amiri,
  • Norman Hack,
  • Christian Hühne

摘要

Additive manufacturing with concrete can revolutionize the construction industry. The technology can contribute to the digitalization and automation of construction processes, leading to more efficient and cost-effective construction practices. Furthermore, it enables a radical rethinking of architectural design. Nevertheless, the implementation of this novel production strategy is accompanied by a series of challenges. Integrating reinforcement into the printed structure is one of the challenges to be addressed. An innovative solution is the robotic and dynamic winding of fibre reinforcement strands. New possibilities for reinforcing additively manufactured structures are opened up by this new type of reinforcement integration. To fully utilise these possibilities, three distinct integration strategies for wound reinforcement strands have been developed, namely Core Winding, Frame Winding and Pin-grid Winding. Previous research has shown the feasibility and benefits of integrating wound fibre reinforcement strands into 3D concrete printing in various smaller and larger experiments and demonstrators (including the Shelltonics demonstrator and the Knitcrete bridge), paving the way for more robust and versatile construction methods. The objective of this paper is to evaluate and compare the aforementioned processes in terms of their functional capabilities. Each process is analysed and classified according to its usability and limitations. This classification should support the determination of the most appropriate process for a particular application. The established framework allows the benefits of winding fibre reinforcement strands to be fully exploited, depending on the application.