Material-process interactions in particle bed 3D printing and the underlying physics

Dirk Lowke, Inka Mai, Emmanuel Keita, Arnaud Perrot, Daniel Weger, Christoph Gehlen, Friedrich Herding, Wenqiang Zuo, Nicolas Roussel

Research output: Contribution to journalArticlepeer-review

26 Scopus citations

Abstract

This paper focuses on material-process interactions in particle bed binding. After a classification of particle bed binding techniques currently available for cement-based materials, the most important material-process interactions and their underlying physics are discussed in detail for the selective cement activation (SCA) and the selective paste intrusion technique (SPI). Here, we consider the sub-processes layer application, layer compaction, fluid application, fluid penetration and after printing treatment. We show that, by varying the material and process parameters in these sub-processes, the printing process and the resulting material properties of the printed component, such as compressive strength, durability and dimensional accuracy, can be specifically controlled. Furthermore, we illustrate how these sub-processes can be both understood and described on the basis of the underlying mechanisms and physically based material models.

Original languageEnglish
Article number106748
JournalCement and Concrete Research
Volume156
DOIs
StatePublished - Jun 2022

Keywords

  • 3D printing
  • Additive manufacturing
  • Particle bed binding
  • Selective binding
  • Selective cement activation
  • Selective paste intrusion

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