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Enhancing Printable Concrete Thixotropy by High-Shear Mixing (2018-09)

10.1007/978-3-319-99519-9_9

 Vandenberg Aileen,  Bessaies-Bey Hela,  Wille Kay,  Roussel Nicolas
Contribution - Proceedings of the 1st RILEM International Conference on Concrete and Digital Fabrication, pp. 94-101

Abstract

Our results show that the storage elastic modulus as a function of time increases at a higher rate for cement paste mixed at higher vesus lower mixing intensity. Hence, higher mixing appears to be enhancing thixotropy. Using calorimetry analysis we find that higher mixing decreases the setting time and enhances the peak of the heat flow. By analyzing the nanoparticles present in the suspending fluid of the cement paste, we show, in accordance with literature, that an appropriate combination of mixing energy and superplasticizer dosage promotes hydration by scratching hydrates from the surface of cement particles, stabilizing them in the suspending fluid and hence generating additional nucleation surfaces. These results open the door for the design of printing heads including high-shear micro mixers allowing for a faster liquidto-solid transition of the printable material.

1 References

  1. Lloret-Fritschi Ena, Shahab Amir, Linus Mettler, Flatt Robert et al. (2014-03)
    Complex Concrete Structures:
    Merging Existing Casting Techniques with Digital Fabrication

5 Citations

  1. Perrot Arnaud, Jacquet Yohan (2025-01)
    3D Concrete Printing by Extrusion and Filament-Deposition
  2. Khan Shoukat, Koç Muammer (2022-10)
    Numerical Modelling and Simulation for Extrusion-Based 3D Concrete Printing:
    The Underlying Physics, Potential, and Challenges
  3. Perrot Arnaud, Pierre Alexandre, Nerella Venkatesh, Wolfs Robert et al. (2021-07)
    From Analytical Methods to Numerical Simulations:
    A Process Engineering Toolbox for 3D Concrete Printing
  4. Roussel Nicolas, Bessaies-Bey Hela, Kawashima Shiho, Marchon Delphine et al. (2019-08)
    Recent Advances on Yield-Stress and Elasticity of Fresh Cement-Based Materials
  5. Perrot Arnaud, Amziane Sofiane (2019-04)
    3D Printing in Concrete:
    General Considerations and Technologies

BibTeX 
@inproceedings{vand_bess_will_rous.2019.EPCTbHSM,
  author            = "Aileen Vandenberg and Hela Bessaies-Bey and Kay Wille and Nicolas Roussel",
  title             = "Enhancing Printable Concrete Thixotropy by High-Shear Mixing",
  doi               = "10.1007/978-3-319-99519-9_9",
  year              = "2019",
  volume            = "19",
  pages             = "94--101",
  booktitle         = "Proceedings of the 1st RILEM International Conference on Concrete and Digital Fabrication: Digital Concrete 2018",
  editor            = "Timothy Paul Wangler and Robert Johann Flatt",
}
Formatted Citation

A. Vandenberg, H. Bessaies-Bey, K. Wille and N. Roussel, “Enhancing Printable Concrete Thixotropy by High-Shear Mixing”, in Proceedings of the 1st RILEM International Conference on Concrete and Digital Fabrication: Digital Concrete 2018, 2019, vol. 19, pp. 94–101. doi: 10.1007/978-3-319-99519-9_9.

Vandenberg, Aileen, Hela Bessaies-Bey, Kay Wille, and Nicolas Roussel. “Enhancing Printable Concrete Thixotropy by High-Shear Mixing”. In Proceedings of the 1st RILEM International Conference on Concrete and Digital Fabrication: Digital Concrete 2018, edited by Timothy Paul Wangler and Robert Johann Flatt, 19:94–101, 2019. https://doi.org/10.1007/978-3-319-99519-9_9.