Biocomposites Façades and -Extension Systems

Research Project 6-2 (RP 6-2)

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This project belongs to a broader body of research investigating annually renewable Natural Fibres (NF) and their possible applications in construction industry, as alternative material systems to the ones based on non-renewable (glass fibre) and long-term renewable resources (timber). The preceding reserach project RP 6-1 successfully developed biocomposite façade sunshade panels and sandwich panels, based on Natural Fibre reinforced Polymers (NFRP) from Tailored Fibre Placement (TFP) preforms, for applications in multi-storey buildings (Research Network 1 – RN1). RP 6-2 will continue the development by complementing the panels with additional NFRP support elements, profiles and fixtures, which all together will form a complete façade system. The facade will be applicable in both multi-storey buildings (RN 1) and existing building stock extensions (RN3).

This goal will be realized by expanding the range of used fabrication techniques to Automated Preforming (AP) and Profile Winding (PW) for production of panel support profiles and full width façade profiles. The development will undergo technical, ecological and social quality assessment on several stages. Ultimately, this continuous process will lead to a thorough comparison of the three different fabrication methods (TFP, AP and PW) regarding their suitability for delivering NFRP building components of specific requirements in automated construction processes and consequently, in the future, to the informed fabrication-related decisions in building projects. Furthermore, a comparison with a fourth fabrication technique (3D printing of biocomposites with NF) will be investigated in a new planned associated project in 2nd Phase named (3D NaturDruck) that is concerned with that theme.

Particular focus is put on moving towards new green biocomposite materials based on biomass binders as an alternative to previously used petro-based epoxy resin matrices. Their development will concentrate on reaching the targeted mechanical properties, flame retardancy and UV resistance depending on the application and compare the results to the pre-achieved ones by biocomposites developed with petro-based binders achieved in Phase 1.

Ultimately, the gathered information will be used in fabrication of façade elements for the proof-of-concept Demonstrator for RN3. 



Associate Prof. Hanaa Dahy
Bio-based Materials and Materials Cycles in Architecture (BioMat) Research Group at Institute of Building Structures and Structural Design (ITKE), University of Stuttgart


Dr.-Ing. Jan Petrs (ITKE)
Piotr Baszynski (ITKE)



  1. 2021

    1. Lehrecke, A., Tucker, C., Yang, X., Baszynski, P., & Dahy, H. (2021). Tailored Lace : Moldless Fabrication of 3D Bio-Composite Structures through an Integrative Design and Fabrication Process. Applied Sciences, 11(22), Article 22.
  2. 2020

    1. Costalonga Martins, V., Cutajar, S., van der Hoven, C., Baszynski, P., & Dahy, H. (2020). FlexFlax Stool: Validation of Moldless Fabrication of Complex Spatial Forms of Natural Fiber-Reinforced Polymer (NFRP) Structures through an Integrative Approach of Tailored Fiber Placement and Coreless Filament Winding Techniques. Applied Sciences, 10(9), Article 9.
    2. Cutajar, S., Costalonga Martins, V., van der Hoven, C., Baszynski, P., & Dahy, H. (2020). Towards Modular Natural Fiber-Reinforced Polymer Architecture. Proceedings of the 40th Annual Conference of the Association of Computer Aided Design in Architecture (ACADIA), 1, 564–573.
    3. Rihaczek, G., Klammer, M., Basnak, O., Petrs, J., Grisin, B., Dahy, H., Carosella, S., & Middendorf, P. (2020). Curved Foldable Tailored Fiber Reinforcements for Moldless Customized Bio-Composite Structures. Proof of Concept: Biomimetic NFRP Stools. Polymers, 12(9), Article 9.




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