Discrete Element Simulations of Rheological Response of Cementitious Binders as Applied to 3D Printing (2018-09)¶

10.1007/978-3-319-99519-9_10

Yang Pu, Nair Sooraj, Neithalath Narayanan
Contribution - Proceedings of the 1^st RILEM International Conference on Concrete and Digital Fabrication, pp. 102-112

Abstract

This paper aims to model the extrusion-based 3D printing process of a plain ordinary Portland cement (OPC) paste using the discrete element method (DEM), and outlines the methodology adopted to evaluate the linkage between particle scale processes and extrusion process. A mini slump test is used to define the rheological model to be used in DEM, and extract the relevant parameters. They are then implemented in a scaled-down extrusion printing model to determine the influence of particle-scale effects on extrusion force. The DEM model is able to capture the differences in extrusion loaddisplacement responses similar to the experiments. Refinements to the model based on extracted parameters are also discussed.

¶

7 References

6 Citations

BibTeX

@inproceedings{yang_nair_neit.2019.DESoRRoCBaAt3P,
  author            = "Pu Yang and Sooraj Kumar A. O. Nair and Narayanan Neithalath",
  title             = "Discrete Element Simulations of Rheological Response of Cementitious Binders as Applied to 3D Printing",
  doi               = "10.1007/978-3-319-99519-9_10",
  year              = "2019",
  volume            = "19",
  pages             = "102--112",
  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

P. Yang, S. K. A. O. Nair and N. Neithalath, “Discrete Element Simulations of Rheological Response of Cementitious Binders as Applied to 3D Printing”, in Proceedings of the 1^st RILEM International Conference on Concrete and Digital Fabrication: Digital Concrete 2018, 2019, vol. 19, pp. 102–112. doi: 10.1007/978-3-319-99519-9_10.

CMOS

Yang, Pu, Sooraj Kumar A. O. Nair, and Narayanan Neithalath. “Discrete Element Simulations of Rheological Response of Cementitious Binders as Applied to 3D Printing”. 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, 19:102–12, 2019. https://doi.org/10.1007/978-3-319-99519-9_10.