Please use this identifier to cite or link to this item: http://bura.brunel.ac.uk/handle/2438/20859
Title: The influence of nano-additives in strengthening mechanical performance of 3D printed multi-binder geopolymer composites
Authors: Chougan, M
Hamidreza Ghaffar, S
Jahanzat, M
Albar, A
Mujaddedi, N
Swash, R
Keywords: Geopolymers;Nano-graphite platelets (NGPs);3D printing
Issue Date: 3-Apr-2020
Publisher: Elsevier BV
Citation: Construction and Building Materials, 2020, 250 pp. 118928 - 118928
Abstract: The weak mechanical properties the 3D printed parts can limit the competence of this technology when compared to conventionally cast-in-mold cementitious composites structures. However, experimental results in this study showed that the incorporation of nano additives could improve the mechanical property of printed structures. Six geopolymeric mixtures were designed and tested for their flow-ability, shape stability, buildability and mechanical performance. Different dosage of nano graphite platelets (NGPs) ranging from 0.1% to 1%, by the weight of geopolymer, were incorporated to the best performing geopolymer. The 3D printed geopolymer with 1% of NGPs increased the flexural strength by 89% and 46% compared to the same 3D printed and casted geopolymer without any NGPs, respectively. The same increase for compressive strength was 28% and 12%. Moreover, the geopolymer mix containing 1% of NGPs demonstrated the best shape retention and buildability.
URI: http://bura.brunel.ac.uk/handle/2438/20859
DOI: http://dx.doi.org/10.1016/j.conbuildmat.2020.118928
ISSN: 0950-0618
Other Identifiers: 118928
Appears in Collections:Dept of Electronic and Computer Engineering Research Papers

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