Printing Quality-Control of Cement-Based Materials Under Flow and Rest-Conditions (2023-02)¶

10.1016/j.cemconcomp.2023.104965

Harbouz Ilhame, Yahia Ammar, Rozière Emmanuel, Loukili Ahmed
Journal Article - Cement and Concrete Composites, Vol. 138

Abstract

Time-dependent rheological properties of cement-based materials have a significant impact on 3D printing processes, where multiple rheological requirements should be met. A proper high rate of structural build-up is recommended to ensure the buildability and stability of printed elements. However, the loss of workability may occur rapidly, resulting in a significant reduction in print quality. Workability and buildability requirements usually interfere due to the time-dependent rheological behavior of cement-based materials under flow and rest conditions. This research aims to highlight the effects of time-dependent behavior on the printability of cementbased materials. The coupling mechanisms of microstructure development at rest and under shearing conditions are discussed. A new thixotropy index is proposed to quantify the printability window of cement-based materials based on their structuration rates. An experimental study was conducted on printable mortars incorporating a viscosity-modifying agent (VMA) to assess printing quality as a function of the degree of thixotropy. Different types of stability failures were captured and discussed.

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24 References

12 Citations

BibTeX

@article{harb_yahi_rozi_louk.2023.PQCoCBMUFaRC,
  author            = "Ilhame Harbouz and Ammar Yahia and Emmanuel Rozière and Ahmed Loukili",
  title             = "Printing Quality-Control of Cement-Based Materials Under Flow and Rest-Conditions",
  doi               = "10.1016/j.cemconcomp.2023.104965",
  year              = "2023",
  journal           = "Cement and Concrete Composites",
  volume            = "138",
}

Formatted Citation

IEEE

I. Harbouz, A. Yahia, E. Rozière and A. Loukili, “Printing Quality-Control of Cement-Based Materials Under Flow and Rest-Conditions”, Cement and Concrete Composites, vol. 138, 2023, doi: 10.1016/j.cemconcomp.2023.104965.

CMOS

Harbouz, Ilhame, Ammar Yahia, Emmanuel Rozière, and Ahmed Loukili. “Printing Quality-Control of Cement-Based Materials Under Flow and Rest-Conditions”. Cement and Concrete Composites 138 (2023). https://doi.org/10.1016/j.cemconcomp.2023.104965.