Fresh and Hardened Properties of 3D Printable Geopolymer Cured in Ambient Temperature (2018-09)¶

10.1007/978-3-319-99519-9_1

Bong Shin, Nematollahi Behzad, Nazari Ali, Xia Ming, Sanjayan Jay
Contribution - Proceedings of the 1^st RILEM International Conference on Concrete and Digital Fabrication, pp. 3-11

Abstract

This paper reports the fresh and hardened properties of an ambient temperature cured 3D printable geopolymer suitable for extrusion-based 3D concrete printing process. Effects of several key geopolymer synthesis parameters including type of alkaline activator (sodium (Na)-based versus potassium (K)-based), mass ratio of silicate to hydroxide solutions, viscosity and SiO2/ M2O ratio (where M = Na or K) of silicate solution on extrudability, open time, shape retention ability and compressive strength of the 3D printable geopolymers were investigated. The results revealed that the type of alkaline activator solution and SiO2/Na2O ratio of the silicate solution had a significant influence on the open time and shape retention ability of the mixtures. The parameters investigated in this study did not have significant effect on the extrudability of the mixtures. The Na-based activators resulted in higher compressive strength of 3D printed geopolymer than the K-based activators. The 3D printable geopolymer mixture made by 8.0 M NaOH solution (25% w/w) and Na2SiO3 solution (75% w/w) with a SiO2/Na2O ratio = 2.0 exhibited the highest compressive strength of 16.6 MPa when cured for only 3 days in the ambient temperature.

¶

4 References

53 Citations

BibTeX

@inproceedings{bong_nema_naza_xia.2019.FaHPo3PGCiAT,
  author            = "Shin Hau Bong and Behzad Nematollahi and Ali Nazari and Ming Xia and Jay Gnananandan Sanjayan",
  title             = "Fresh and Hardened Properties of 3D Printable Geopolymer Cured in Ambient Temperature",
  doi               = "10.1007/978-3-319-99519-9_1",
  year              = "2019",
  volume            = "19",
  pages             = "3--11",
  booktitle         = "Proceedings of the 1st RILEM International Conference on Concrete and Digital Fabrication: Digital Concrete 2018",
  editor            = "Timothy Paul Wangler and Robert Johann Flatt",
}

Formatted Citation

IEEE

S. H. Bong, B. Nematollahi, A. Nazari, M. Xia and J. G. Sanjayan, “Fresh and Hardened Properties of 3D Printable Geopolymer Cured in Ambient Temperature”, in Proceedings of the 1^st RILEM International Conference on Concrete and Digital Fabrication: Digital Concrete 2018, 2019, vol. 19, pp. 3–11. doi: 10.1007/978-3-319-99519-9_1.

CMOS

Bong, Shin Hau, Behzad Nematollahi, Ali Nazari, Ming Xia, and Jay Gnananandan Sanjayan. “Fresh and Hardened Properties of 3D Printable Geopolymer Cured in Ambient Temperature”. In Proceedings of the 1^st RILEM International Conference on Concrete and Digital Fabrication: Digital Concrete 2018, edited by Timothy Paul Wangler and Robert Johann Flatt, 19:3–11, 2019. https://doi.org/10.1007/978-3-319-99519-9_1.