A Compendious Review on Lack-of-Fusion in Digital Concrete Fabrication (2020-10)¶

10.1016/j.addma.2020.101654

Kruger Jacques, van Zijl Gideon
Journal Article - Additive Manufacturing, Vol. 37

Abstract

Lack-of-fusion (LOF) in digital concrete fabrication is one of the paramount technical issues that must pr be elucidated before mass industry implementation of this emerging technology. This review paper p initially accentuates the ramifications of poor interlayer bonding, which include impaired mechanical e-p and thermo-mechanical performance in the hardened concrete state, durability issues pertaining to e-p corrosion of reinforcing steel and the complexities associated with numerical modelling of 3D printed Pre structures. Focus is then placed on the mechanisms that induce LOF, which constitute an intricate Pre combination of mechanical interaction, chemical bonding and intermolecular forces between Pr filaments. Comprehension of these mechanisms is required to develop appropriate solutions to this l P problem. The paper presents current interlayer bond strength (IBS) characterization tests and their l P associated (dis)advantages. Lastly, solutions employed in literature to reduce LOF are presented to al give readers a holistic perspective of the current state-of-the-art surrounding LOF in 3D concrete nal printing.

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116 References

135 Citations

BibTeX

@article{krug_zijl.2021.ACRoLoFiDCF,
  author            = "Jacques Pienaar Kruger and Gideon Pieter Adriaan Greeff van Zijl",
  title             = "A Compendious Review on Lack-of-Fusion in Digital Concrete Fabrication",
  doi               = "10.1016/j.addma.2020.101654",
  year              = "2021",
  journal           = "Additive Manufacturing",
  volume            = "37",
}

Formatted Citation

IEEE

J. P. Kruger and G. P. A. G. van Zijl, “A Compendious Review on Lack-of-Fusion in Digital Concrete Fabrication”, Additive Manufacturing, vol. 37, 2021, doi: 10.1016/j.addma.2020.101654.

CMOS

Kruger, Jacques Pienaar, and Gideon Pieter Adriaan Greeff van Zijl. “A Compendious Review on Lack-of-Fusion in Digital Concrete Fabrication”. Additive Manufacturing 37 (2021). https://doi.org/10.1016/j.addma.2020.101654.