Experimental and operations viability assessment of powder-to-powder (P2P) mixture of graphene and cement for industrial applications

Akilu Yunusa-Kaltungo, Meini Su, Patrick Manu, Clara Cheung, Alejandro Gallego-Schmid, Raphael Tarpani, Jingyue Hao, Lin Ma

Research output: Contribution to journalArticlepeer-review

Abstract

Studies have demonstrated that a minute quantity of graphene is sufficient to boost cement characteristics, but the attainment of good dispersion and uniformity of the resultant graphene-cement mixture remains a challenge. To alleviate these challenges, this study proposes a low-energy powder-to-powder homogeniser for dispersing reasonably large quantities of graphene powder into cement powders. Microscopic analysis of graphene dispersion from two samples (1% and 0.02% graphene) at 5x, 10x and 20x objectives revealed that graphene accounts for 1.3% and 0.09% over the cement area respectively, which is relatively uniform across all selected samples. Furthermore, four different dosages of graphene were used to validate the impacts of various proportions of graphene, i.e., 0%, 0.02%, 0.04% and 0.06% (by mass of cement) on two types of cement (i.e., Portland cement CEM I 52.5 N and Portland cement CEM II 42.5 N) which also revealed compressive strength increases up to 25% at 7 and 28 days.
Original languageEnglish
Article number136657
Number of pages13
JournalConstruction and Building Materials
Volume432
Early online date16 May 2024
DOIs
Publication statusPublished - 21 Jun 2024

Keywords

  • Sustainability
  • Energy reduction
  • Graphene-cement
  • Powder-to-powder
  • Occupational safety and health
  • Cost and benefits analysis

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