Exploring the Possibility of Using Bioreceptive Concrete in Building Façades

Authors

  • Max Veeger TU Delft, Faculty of Architecture and the Built Environment, Department of Architectural Engineering and Technoilogy,
  • Alejandro Prieto TU Delft, Faculty of Architecture and the Built Environment, Department of Architectural Engineering and Technoilogy
  • Marc Ottelé TU Delft, Faculty of Civil Engineering and Geosciences, Department of Materials, Mechanics, Management & Design (3Md)

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DOI:

https://doi.org/10.7480/jfde.2021.1.5527

Keywords:

Bioreceptivity, biofilm, concrete façade panel

Abstract

A bioreceptive material allows for biological content (biofilms) to grow on it, without necessarily affecting the material itself. If a bioreceptive concrete could therefore be integrated into a building façade, it could lead to green façades that do not need additional technical systems. As part of previous research by the authors, a promising bioreceptive concrete mixture was formulated. The aim of this research is to develop this concept by using the previously developed mixture to create a bioreceptive concrete façade panel prototype, made using commonly available materials, that can direct where the biological growth takes place. The latter is done by combining the bioreceptive concrete with a non-bioreceptive (UHPCbased) concrete in the same panel, through a two-stage pouring process. A biofilm was developed on this prototype panel and results show that full coverage of the bioreceptive parts of the panel can be achieved within two weeks under optimal growing conditions and biological growth can be directed. However, exterior survivability is an issue for now. The concept of bioreceptive façades therefore shows promise, yet further investigation into improving exterior survivability is necessary, while further research into the underlying ecology, material, economics, and climate effects is also necessary.

Published

2021-04-06