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Recycling Potential of Cellular Lightweight Concrete Insulation as Supplementary Cementitious Material

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International RILEM Conference on Synergising Expertise towards Sustainability and Robustness of Cement-based Materials and Concrete Structures (SynerCrete 2023)

Part of the book series: RILEM Bookseries ((RILEM,volume 44))

Abstract

Buildings are responsible for 40% of the total energy consumption annually in Europe, along with the respective greenhouse gas emissions. To mitigate these impacts, intensive research is ongoing in the sector of Nearly Zero-Energy Buildings (NZEBs). Within EU-funded project iClimaBuilt, RISE is developing and improving the formulation of cellular lightweight concrete insulation (CLC) as a sustainable and recyclable alternative for organic insulation materials (ex. Expanded polystyrene (EPS)). Compared to EPS, this material is non-combustible and achieves similar performance as existing insulation materials (thermal conductivity of 40 mW/(mK)) while economically more attractive (EPS 60 EUR/m3, CLC 50 EUR/m3). In addition, the material is easily recyclable since it is 100% mineral based. It is also similar or lighter in weight than traditional EPS (around 80 kg/m3). At these ultra-low densities as for concrete, the material integrity was ensured by adding polypropylene micro-fibres. To further improve the thermal conductivity of CLC, granulated silica aerogels were implemented in the mix. The CLC was implemented in a lightweight sandwich-panel in form of a prefabricated block similar to currently used EPS-sheets. The recyclability of the material as an SCM for new cement production is being evaluated by a reactivity study of grinded and reheated (recalcined) material. The panel prototypes will be tested in a laboratory and validated in the living labs – real-life test and experimentation buildings in different climate zones in Europe.

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Acknowledgments

This research has received funding from the European Union’s Horizon 2020 research and innovation programme Iclimabuilt, under Grant Agreement No 952886 and Lightcoce project under grant agreement No 814632.

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Authors and Affiliations

  1. Department of Infrastructure and Concrete Technology, RISE Research Institutes of Sweden, Brinellgatan 4, 50115, Borås, Sweden

    Jan Suchorzewski, Natechanok Chitvoranund, Sumit Srivastava, Miguel Prieto & Katarina Malaga

Authors
  1. Jan Suchorzewski
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  2. Natechanok Chitvoranund
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  3. Sumit Srivastava
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  4. Miguel Prieto
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  5. Katarina Malaga
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Corresponding author

Correspondence to Jan Suchorzewski .

Editor information

Editors and Affiliations

  1. Department of Structural Engineering, Silesian University of Technology, Gliwice, Poland

    Agnieszka Jędrzejewska

  2. Technical Specialist Services, Materials, ARUP, London, UK

    Fragkoulis Kanavaris

  3. ISISE, University of Minho, Guimaraes, Portugal

    Miguel Azenha

  4. Laboratoire de Mécanique Paris-Saclay, ENS Paris-Saclay, Gif-sur-Yvette, France

    Farid Benboudjema

  5. Institute of Structural Concrete, Graz University of Technology, Graz, Austria

    Dirk Schlicke

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Suchorzewski, J., Chitvoranund, N., Srivastava, S., Prieto, M., Malaga, K. (2023). Recycling Potential of Cellular Lightweight Concrete Insulation as Supplementary Cementitious Material. In: Jędrzejewska, A., Kanavaris, F., Azenha, M., Benboudjema, F., Schlicke, D. (eds) International RILEM Conference on Synergising Expertise towards Sustainability and Robustness of Cement-based Materials and Concrete Structures. SynerCrete 2023. RILEM Bookseries, vol 44. Springer, Cham. https://doi.org/10.1007/978-3-031-33187-9_13

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  • DOI: https://doi.org/10.1007/978-3-031-33187-9_13

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  • Publisher Name: Springer, Cham

  • Print ISBN: 978-3-031-33186-2

  • Online ISBN: 978-3-031-33187-9

  • eBook Packages: EngineeringEngineering (R0)

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