Development of 3D Printable Cementitious Composites with the Incorporation of Polypropylene Fibers (2021-08)¶

10.3390/ma14164474

van der Putten Jolien, Rahul Attupurathu, de Schutter Geert, van Tittelboom Kim
Journal Article - Materials, Vol. 14, Iss. 16

Abstract

Similar to conventional cast concrete, printable materials require reinforcement to counteract their low tensile strength. However, as traditional reinforcement strategies are not commonly used in 3D print applications, fiber reinforcement can serve as an alternative. This study aims to assess the influence of different polypropylene fiber lengths (3 and 6 mm, denoted as M3 and M6, respectively) and dosages (0.1 and 0.3% volume fraction) on the workability, pore structure, mechanical and shrinkage behavior of 3D printable cementitious materials. Fresh state observations revealed that the addition of a higher fiber volume decreased the workability of the material, irrespective of the fiber length as a result of the lower water film thickness (WFT). In hardened state, a marginal increase in total porosity could be observed when adding fibers to the mix composition. In addition, the flexural strength was found to increase with the addition of fibers, while no significant difference was observed in compressive strength. The increase in flexural strength was more pronounced in the case of longer-sized M6 fibers. Finally, the total drying shrinkage behavior was evaluated using mold-cast prisms. The addition of M6 fibers showed no beneficial effect in reducing total free shrinkage, while a reduction in total free shrinkage was observed when using M3 fibers.

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15 References

33 Citations

BibTeX

@article{putt_rahu_schu_titt.2021.Do3PCCwtIoPF,
  author            = "Jolien van der Putten and Attupurathu Vijayan Rahul and Geert de Schutter and Kim van Tittelboom",
  title             = "Development of 3D Printable Cementitious Composites with the Incorporation of Polypropylene Fibers",
  doi               = "10.3390/ma14164474",
  year              = "2021",
  journal           = "Materials",
  volume            = "14",
  number            = "16",
}

Formatted Citation

IEEE

J. van der Putten, A. V. Rahul, G. de Schutter and K. van Tittelboom, “Development of 3D Printable Cementitious Composites with the Incorporation of Polypropylene Fibers”, Materials, vol. 14, no. 16, 2021, doi: 10.3390/ma14164474.

CMOS

Putten, Jolien van der, Attupurathu Vijayan Rahul, Geert de Schutter, and Kim van Tittelboom. “Development of 3D Printable Cementitious Composites with the Incorporation of Polypropylene Fibers”. Materials 14, no. 16 (2021). https://doi.org/10.3390/ma14164474.