Fiber-Orientation Effects on Ultra-High-Performance Concrete Formed by 3D Printing (2021-02)¶

10.1016/j.cemconres.2021.106384

Arunothayan Arun, Nematollahi Behzad, Ranade Ravi, Bong Shin, Sanjayan Jay, Khayat Kamal
Journal Article - Cement and Concrete Research, Vol. 143

Abstract

Despite the growing interest in 3D concrete printing, its current progress is limited by reinforcing methods. Inclusion of steel fibers is a potential reinforcing solution; however, the effect of printing process on orientation of the fibers is still unknown. This study aims to quantitatively investigate the orientation distribution of steel fibers in 3D printed ultra-high performance concrete. The effects of extrusion nozzle size, Cartesian print speed, and fiber volume fraction on the orientation of fibers were evaluated using digital image analysis. The consequent effects of the fiber orientation on the mechanical properties of the 3D-printed specimens were also determined. The results were compared with those of the conventionally mold-cast specimens. The results revealed that the smaller nozzle size and higher fiber volume fraction significantly enhanced the fiber alignment parallel to the printing direction. This preferential fiber alignment led to superior mechanical performance of the printed specimens to the mold-cast specimens.

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21 References

225 Citations

BibTeX

@article{arun_nema_rana_bong.2021.FOEoUHPCFb3P,
  author            = "Arun Ravendran Arunothayan and Behzad Nematollahi and Ravi Ranade and Shin Hau Bong and Jay Gnananandan Sanjayan and Kamal H. Khayat",
  title             = "Fiber-Orientation Effects on Ultra-High-Performance Concrete Formed by 3D Printing",
  doi               = "10.1016/j.cemconres.2021.106384",
  year              = "2021",
  journal           = "Cement and Concrete Research",
  volume            = "143",
}

Formatted Citation

IEEE

A. R. Arunothayan, B. Nematollahi, R. Ranade, S. H. Bong, J. G. Sanjayan and K. H. Khayat, “Fiber-Orientation Effects on Ultra-High-Performance Concrete Formed by 3D Printing”, Cement and Concrete Research, vol. 143, 2021, doi: 10.1016/j.cemconres.2021.106384.

CMOS

Arunothayan, Arun Ravendran, Behzad Nematollahi, Ravi Ranade, Shin Hau Bong, Jay Gnananandan Sanjayan, and Kamal H. Khayat. “Fiber-Orientation Effects on Ultra-High-Performance Concrete Formed by 3D Printing”. Cement and Concrete Research 143 (2021). https://doi.org/10.1016/j.cemconres.2021.106384.