Surfactants to Enable Quick Nozzle Mixing in 3D Concrete Printing (2023-08)¶

10.1016/j.cemconcomp.2023.105226

Zhang Nan, Sanjayan Jay
Journal Article - Cement and Concrete Composites, Vol. 142, No. 105226

Abstract

Quick Nozzle Mixing is a technique to overcome the contradictory rheological requirements of buildability and pumpability in 3D concrete printing. The challenge is to achieve a uniform mix in a short mix time. This work presents the mechanism of the mixing process in concrete and investigates the properties of mixing water containing five surfactants. The fresh and hardened properties of concretes made with these surfactants are analyzed. Results show that these surfactants play dominant roles in mixing efficiency, dependent on the mixing duration. These surfactants are ranked according to decreasing wettability as follows: Sodium dodecyl sulphate, Saponified rosin (SR), polyarylether, polycarboxylicether (PCE) and naphthalene sulphonate. These printable concretes mixed with 0.8 wt% PCE for 60 s and SR for 30 s exhibited high levels of homogeneity. The mechanical deterioration due to air incorporation was also discussed.

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30 References

7 Citations

BibTeX

@article{zhan_sanj.2023.StEQNMi3CP,
  author            = "Nan Zhang and Jay Gnananandan Sanjayan",
  title             = "Surfactants to Enable Quick Nozzle Mixing in 3D Concrete Printing",
  doi               = "10.1016/j.cemconcomp.2023.105226",
  year              = "2023",
  journal           = "Cement and Concrete Composites",
  volume            = "142",
  pages             = "105226",
}

Formatted Citation

IEEE

N. Zhang and J. G. Sanjayan, “Surfactants to Enable Quick Nozzle Mixing in 3D Concrete Printing”, Cement and Concrete Composites, vol. 142, p. 105226, 2023, doi: 10.1016/j.cemconcomp.2023.105226.

CMOS

Zhang, Nan, and Jay Gnananandan Sanjayan. “Surfactants to Enable Quick Nozzle Mixing in 3D Concrete Printing”. Cement and Concrete Composites 142 (2023): 105226. https://doi.org/10.1016/j.cemconcomp.2023.105226.