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Drying of 3D Printed Mortar Filaments at Early-Age Assessed by X-Ray Computed Tomography (2020-07)

10.1007/978-3-030-49916-7_58

 Zuo Wenqiang,  Keita Emmanuel,  Bornert Michel,  Roussel Nicolas
Contribution - Proceedings of the 2nd RILEM International Conference on Concrete and Digital Fabrication, pp. 564-571

Abstract

3D extrusion-based additive manufacturing is known as the most widely applied printing strategy for digital fabrication of civil engineering materials. This construction method does not only require specific rheological properties and structural build-ups rates, but also mechanical properties comparable to conventional materials. In the current work, manually cast mortar filaments consisting of cement paste and glass beads are used to mimic the 3D printed cement-based materials. We first compare the 3D tomography of mortar between sealed and dried conditions with or without mold constraint at early age. We then carry out the 3-point-bending tests for sealed and dried mortar. Our results suggest that at very early age before setting, drying phenomena induce irreversible microcracks which lead to a deterioration of mechanical strength of the filaments.

4 References

  1. Keita Emmanuel, Bessaies-Bey Hela, Zuo Wenqiang, Belin Patrick et al. (2019-06)
    Weak Bond Strength Between Successive Layers in Extrusion-Based Additive Manufacturing:
    Measurement and Physical Origin
  2. Reiter Lex, Wangler Timothy, Roussel Nicolas, Flatt Robert (2018-06)
    The Role of Early-Age Structural Build-Up in Digital Fabrication with Concrete
  3. Roussel Nicolas (2018-05)
    Rheological Requirements for Printable Concretes
  4. Wangler Timothy, Roussel Nicolas, Bos Freek, Salet Theo et al. (2019-06)
    Digital Concrete:
    A Review

2 Citations

  1. Chen Yu, Chang Ze, He Shan, Çopuroğlu Oğuzhan et al. (2022-04)
    Effect of Curing Methods During a Long Time-Gap Between Two Printing Sessions on the Inter-Layer Bonding of 3D Printed Cementitious Materials
  2. Moini Mohamadreza, Baghaie Ahmadreza, Rodriguez Fabian, Zavattieri Pablo et al. (2021-06)
    Quantitative Microstructural Investigation of 3D Printed and Cast Cement-Pastes Using Micro-Computed Tomography- and Image-Analysis

BibTeX 
@inproceedings{zuo_keit_born_rous.2020.Do3PMFaEAAbXRCT,
  author            = "Wenqiang Zuo and Emmanuel Keita and Michel Bornert and Nicolas Roussel",
  title             = "Drying of 3D Printed Mortar Filaments at Early-Age Assessed by X-Ray Computed Tomography",
  doi               = "10.1007/978-3-030-49916-7_58",
  year              = "2020",
  volume            = "28",
  pages             = "564--571",
  booktitle         = "Proceedings of the 2nd RILEM International Conference on Concrete and Digital Fabrication: Digital Concrete 2020",
  editor            = "Freek Paul Bos and Sandra Simaria de Oliveira Lucas and Robert Johannes Maria Wolfs and Theo A. M. Salet",
}
Formatted Citation

W. Zuo, E. Keita, M. Bornert and N. Roussel, “Drying of 3D Printed Mortar Filaments at Early-Age Assessed by X-Ray Computed Tomography”, in Proceedings of the 2nd RILEM International Conference on Concrete and Digital Fabrication: Digital Concrete 2020, 2020, vol. 28, pp. 564–571. doi: 10.1007/978-3-030-49916-7_58.

Zuo, Wenqiang, Emmanuel Keita, Michel Bornert, and Nicolas Roussel. “Drying of 3D Printed Mortar Filaments at Early-Age Assessed by X-Ray Computed Tomography”. In Proceedings of the 2nd RILEM International Conference on Concrete and Digital Fabrication: Digital Concrete 2020, edited by Freek Paul Bos, Sandra Simaria de Oliveira Lucas, Robert Johannes Maria Wolfs, and Theo A. M. Salet, 28:564–71, 2020. https://doi.org/10.1007/978-3-030-49916-7_58.