Experience in On-Line Modification of Rheology and Strength Acquisition of 3D Printable Mortars (2018-09)¶

10.1007/978-3-319-99519-9_3

Esnault Vivien, Labyad A., Chantin Marjorie, Toussaint Fabrice
Contribution - Proceedings of the 1^st RILEM International Conference on Concrete and Digital Fabrication, pp. 24-38

Abstract

This study focus on the early age properties of two mortar formulations designed for a 3D printing extrusion process. They follow a new design and process strategy, which consists in formulating a mortar to be self-levelling, to optimize pumpability, and then incorporating an additive in the extrusion nozzle to modify rheology properties and setting properties to adapt it to the requirement of the printing process (self-sustaining as soon as the material exits the nozzle, and fast strength acquisition). Two types of additives are considered: an alkali-free shotcrete accelerator and a starch ether based VMA. Compression and shear strength measurements from 2 min to 4 h after the incorporation of the additive demonstrate the capacity of the method to create mortars with strength acquisition vastly superior to results from the literature. Lab-scale extrusion and operational feedback from 3D printing customers demonstrate the feasibility at operational scale. The variety of properties obtainable by playing with different types of additives is also discussed

¶

10 References

36 Citations

BibTeX

@inproceedings{esna_laby_chan_tous.2019.EiOLMoRaSAo3PM,
  author            = "Vivien Esnault and A. Labyad and Marjorie Chantin and Fabrice Toussaint",
  title             = "Experience in On-Line Modification of Rheology and Strength Acquisition of 3D Printable Mortars",
  doi               = "10.1007/978-3-319-99519-9_3",
  year              = "2019",
  volume            = "19",
  pages             = "24--38",
  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

IEEE

V. Esnault, A. Labyad, M. Chantin and F. Toussaint, “Experience in On-Line Modification of Rheology and Strength Acquisition of 3D Printable Mortars”, in Proceedings of the 1^st RILEM International Conference on Concrete and Digital Fabrication: Digital Concrete 2018, 2019, vol. 19, pp. 24–38. doi: 10.1007/978-3-319-99519-9_3.

CMOS

Esnault, Vivien, A. Labyad, Marjorie Chantin, and Fabrice Toussaint. “Experience in On-Line Modification of Rheology and Strength Acquisition of 3D Printable Mortars”. In Proceedings of the 1^st RILEM International Conference on Concrete and Digital Fabrication: Digital Concrete 2018, edited by Timothy Paul Wangler and Robert Johann Flatt, 19:24–38, 2019. https://doi.org/10.1007/978-3-319-99519-9_3.