Investigation of Additive Incorporation on Rheological, Microstructural and Mechanical Properties of 3D Printable Alkali-Activated Materials (2021-02)¶

10.1016/j.matdes.2021.109574

Chougan Mehdi, Ghaffar Seyed, Sikora Paweł, Chung Sang-Yeop, Rucińska Teresa, Stephan Dietmar, Albar Abdulrahman, Swash Mohammad
Journal Article - Materials & Design, Vol. 202

Abstract

This study investigates theaddition ofPoly-vinyl Alcohol (PVA) fibres and attapulgite nanoclay to alkali-activated materials (AAMs) with the aim of enhancing the mechanical performance and optimizing the printability and buildability ofAAMs. The fresh properties of six mix formulations, including flowability, slump values, rheology, shape retention, and extrusionwindow,were evaluated. The best performingmixes, that exhibited optimal fresh properties, were 3D printed, and their mechanical performance, microstructure, and buildability were investigated. The addition of 1 wt.-% attapulgite nanoclay (i.e. A-1) showed the desirable fresh properties required for 3D printing, aswell as providing sufficient mechanical reinforcement to the samples. The 3DprintedA-1 samples showed an improved flexural and compressive strength by 43% and 20%, respectively, compared to both the casted and printed control mixes. Moreover, microstructure analysis, including SEM, Rapidair measurement, and micro-CT, provided evidence of the compatibility by showing the lowest pores anisotropy and mixture homogeneity, between attapulgite and AAMs.

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22 References

71 Citations

BibTeX

@article{chou_ghaf_siko_chun.2021.IoAIoRMaMPo3PAAM,
  author            = "Mehdi Chougan and Seyed Hamidreza Ghaffar and Paweł Sikora and Sang-Yeop Chung and Teresa Rucińska and Dietmar Stephan and Abdulrahman M. Albar and Mohammad Rafiq Swash",
  title             = "Investigation of Additive Incorporation on Rheological, Microstructural and Mechanical Properties of 3D Printable Alkali-Activated Materials",
  doi               = "10.1016/j.matdes.2021.109574",
  year              = "2021",
  journal           = "Materials & Design",
  volume            = "202",
}

Formatted Citation

IEEE

M. Chougan, “Investigation of Additive Incorporation on Rheological, Microstructural and Mechanical Properties of 3D Printable Alkali-Activated Materials”, Materials & Design, vol. 202, 2021, doi: 10.1016/j.matdes.2021.109574.

CMOS

Chougan, Mehdi, Seyed Hamidreza Ghaffar, Paweł Sikora, Sang-Yeop Chung, Teresa Rucińska, Dietmar Stephan, Abdulrahman M. Albar, and Mohammad Rafiq Swash. “Investigation of Additive Incorporation on Rheological, Microstructural and Mechanical Properties of 3D Printable Alkali-Activated Materials”. Materials & Design 202 (2021). https://doi.org/10.1016/j.matdes.2021.109574.