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 load-displacement responses similar to the experiments. Refinements to the model based on extracted parameters are also discussed.

Original languageEnglish (US)
Title of host publicationRILEM Bookseries
PublisherSpringer Netherlands
Pages102-112
Number of pages11
DOIs
StatePublished - Jan 1 2019

Publication series

NameRILEM Bookseries
Volume19
ISSN (Print)2211-0844
ISSN (Electronic)2211-0852

ASJC Scopus subject areas

  • Civil and Structural Engineering
  • Building and Construction
  • Mechanics of Materials

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  • Cite this

    Yang, P., Nair, S. K. A. O., & Neithalath, N. (2019). Discrete element simulations of rheological response of cementitious binders as applied to 3D printing. In RILEM Bookseries (pp. 102-112). (RILEM Bookseries; Vol. 19). Springer Netherlands. https://doi.org/10.1007/978-3-319-99519-9_10