An Ab-Inito Approach for Thixotropy Characterisation of Nano-Particle-Infused 3D Printable Concrete (2019-07)¶

10.1016/j.conbuildmat.2019.07.078

Kruger Jacques, Zeranka Stephan, van Zijl Gideon
Journal Article - Construction and Building Materials, Vol. 224, pp. 372-386

Abstract

This paper presents a novel rheological thixotropy model that specifically appertains to the characterisation of materials that are suitable for 3D printing of concrete (3DPC). The model accounts for both physical and chemical influences on a material’s microstructure, denoted by Rthix (re-flocculation) and Athix (structuration) respectively. Rheological analyses are performed on a reference material with varying superplasticizer (SP) and nano-silica (nS) dosages in order to determine their effects on the aforementioned parameters. Specific focus is placed on the re-flocculation thixotropy mechanism. The advantages of adding nanoparticles to concrete for 3DPC is practically validated by printing circular hollow columns until failure occurs. The result is supported by the thixotropy model, which is applied to the materials that are used for the 3DPC tests. It is concluded that, for this study, Rthix is a better measure of thixotropy behaviour that is suitable for 3DPC than Athix

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13 References

211 Citations

BibTeX

@article{krug_zera_zijl.2019.AAIAfTCoNPI3PC,
  author            = "Jacques Pienaar Kruger and Stephan Zeranka and Gideon Pieter Adriaan Greeff van Zijl",
  title             = "An Ab-Inito Approach for Thixotropy Characterisation of Nano-Particle-Infused 3D Printable Concrete",
  doi               = "10.1016/j.conbuildmat.2019.07.078",
  year              = "2019",
  journal           = "Construction and Building Materials",
  volume            = "224",
  pages             = "372--386",
}

Formatted Citation

IEEE

J. P. Kruger, S. Zeranka and G. P. A. G. van Zijl, “An Ab-Inito Approach for Thixotropy Characterisation of Nano-Particle-Infused 3D Printable Concrete”, Construction and Building Materials, vol. 224, pp. 372–386, 2019, doi: 10.1016/j.conbuildmat.2019.07.078.

CMOS

Kruger, Jacques Pienaar, Stephan Zeranka, and Gideon Pieter Adriaan Greeff van Zijl. “An Ab-Inito Approach for Thixotropy Characterisation of Nano-Particle-Infused 3D Printable Concrete”. Construction and Building Materials 224 (2019): 372–86. https://doi.org/10.1016/j.conbuildmat.2019.07.078.