Effects of Deposition-Velocity in the Presence-Absence of E6-Glass-Fiber on Extrusion-Based 3D Printed Mortar (2020-01)¶

10.1016/j.addma.2020.101069

Shakor Pshtiwan, Nejadi Shami, Sutjipto Sheila, Paul Gavin, Gowripalan Nadarajah
Journal Article - Additive Manufacturing, Vol. 32

Abstract

Additive Manufacturing (AM) technologies are widely used in various fields of industry and research. Continual research has enabled AM technologies to be considered as a feasible substitute for certain applications in the construction industry, particularly given the advances in the use of glass fibre reinforced mortar. An investigation of the resulting mechanical properties of various mortar mixes extruded using a robotic arm is presented. The nozzle paths were projected via ‘spline’ interpolation to obtain the desired trajectory and deposition velocity in the reference frame of the manipulator. Along each path, various mortar mixes, with and without chopped glass fibre, were deposited at different velocities. Tests were conducted to determine their mechanical performance when incorporated in printed structures with different layers (1, 2, 4 and 6 layers). The results are compared with those of conventional cast-in-place mortar. In this study, the mixes consist of ordinary Portland cement, fine sand, chopped glass fibres (6 mm) and chemical admixtures, which are used to print prismatic- and cubic-shaped specimens. Mechanical strength tests were performed on the printed specimens to evaluate the behaviour of the materials in the presence and absence of glass fibre. Robot end-effector velocity tests were performed to examine the printability and extrudability of the mortar mixes. Finally, horizontal and vertical line printing tests were used to determine the workability, buildability and uniformity of the mortar mix and to monitor the fibre flow directions in the printed specimens. The results show that printed specimens with glass fibre have enhanced compressive strength compared with specimens without glass fibre.

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27 References

57 Citations

BibTeX

@article{shak_neja_sutj_paul.2020.EoDVitPAoEGFoEB3PM,
  author            = "Pshtiwan N. Shakor and Shami Nejadi and Sheila Sutjipto and Gavin Paul and Nadarajah Gowripalan",
  title             = "Effects of Deposition-Velocity in the Presence-Absence of E6-Glass-Fiber on Extrusion-Based 3D Printed Mortar",
  doi               = "10.1016/j.addma.2020.101069",
  year              = "2020",
  journal           = "Additive Manufacturing",
  volume            = "32",
}

Formatted Citation

IEEE

P. N. Shakor, S. Nejadi, S. Sutjipto, G. Paul and N. Gowripalan, “Effects of Deposition-Velocity in the Presence-Absence of E6-Glass-Fiber on Extrusion-Based 3D Printed Mortar”, Additive Manufacturing, vol. 32, 2020, doi: 10.1016/j.addma.2020.101069.

CMOS

Shakor, Pshtiwan N., Shami Nejadi, Sheila Sutjipto, Gavin Paul, and Nadarajah Gowripalan. “Effects of Deposition-Velocity in the Presence-Absence of E6-Glass-Fiber on Extrusion-Based 3D Printed Mortar”. Additive Manufacturing 32 (2020). https://doi.org/10.1016/j.addma.2020.101069.