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Towards Sustainable Material: Optimizing Geopolymer Mortar Formulations for 3D Printing: A Life Cycle Assessment Approach

Author

Listed:
  • Charlotte Roux

    (MINES Paris—PSL Research University, CEEP (Centre Energie Environnement Procédés), 60 Boulevard Saint Michel, 75006 Paris, France)

  • Julien Archez

    (Navier Laboratory, Ecole des Ponts ParisTech, Gustave Eiffel University CNRS, 77454 Champs sur Marne, France)

  • Corentin Le Gall

    (Navier Laboratory, Ecole des Ponts ParisTech, Gustave Eiffel University CNRS, 77454 Champs sur Marne, France)

  • Myriam Saadé

    (Navier Laboratory, Ecole des Ponts ParisTech, Gustave Eiffel University CNRS, 77454 Champs sur Marne, France)

  • Adélaïde Féraille

    (Navier Laboratory, Ecole des Ponts ParisTech, Gustave Eiffel University CNRS, 77454 Champs sur Marne, France)

  • Jean-François Caron

    (Navier Laboratory, Ecole des Ponts ParisTech, Gustave Eiffel University CNRS, 77454 Champs sur Marne, France)

Abstract

Geopolymer-based concretes have been elaborated among others for their potential to lower the environmental impact of the construction sector. The rheology and workability of fresh geopolymers make them suitable for new applications such as 3D printing. In this paper, we aim to develop a potassium silicate- and metakaolin-based geopolymer mortar with sand and local earth additions suited for 3D printing and an environmental assessment framework for this material. The methodology aims at the optimization of both the granular skeleton and the geopolymer matrix for the development of a low-environmental-impact material suited for 3D printing. Using this approach, various metakaolin/earth geopolymer mortars are explored from a mechanical and environmental point of view. The environmental assessment of the lab-scale process shows an improvement for the climate change category but a degradation of other indicators, compared to Portland-cement-based concrete. Several promising options exist to further optimize the process and decrease its environmental impacts. This constitutes the main research perspective of this work.

Suggested Citation

  • Charlotte Roux & Julien Archez & Corentin Le Gall & Myriam Saadé & Adélaïde Féraille & Jean-François Caron, 2024. "Towards Sustainable Material: Optimizing Geopolymer Mortar Formulations for 3D Printing: A Life Cycle Assessment Approach," Sustainability, MDPI, vol. 16(8), pages 1-20, April.
    • Handle: RePEc:gam:jsusta:v:16:y:2024:i:8:p:3328-:d:1376597
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    References listed on IDEAS

    as
    1. Jonas Hedberg & Kristin Fransson & Sonja Prideaux & Sandra Roos & Christina Jönsson & Inger Odnevall Wallinder, 2019. "Improving the Life Cycle Impact Assessment of Metal Ecotoxicity: Importance of Chromium Speciation, Water Chemistry, and Metal Release," Sustainability, MDPI, vol. 11(6), pages 1-19, March.
    2. Mette Bendixen & Jim Best & Chris Hackney & Lars Lønsmann Iversen, 2019. "Time is running out for sand," Nature, Nature, vol. 571(7763), pages 29-31, July.
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