WS2 nanotube - Reinforced cement: Dispersion matters

Roey Nadiv, Michael Shtein, Alva Peled, Oren Regev

Research output: Contribution to journalArticlepeer-review

15 Scopus citations

Abstract

Nanotubes are considered as promising nano-reinforcement in cement-based materials. The main challenge towards achieving a significant enhancement in cement properties is an effective dispersion of the agglomerated nanotubes. In this paper, we demonstrate a novel dispersion method of Tungsten di-Sulfide NanoTubes (WS2NTs) that results in substantial flexural and compressive strength enhancements at optimal nanotube concentration as low as 0.15 wt%. The reinforcement by WS2NTs remains significant after a variety of curing processes, suggesting a genuine nanoscale reinforcing effect. Finally, by employing a comprehensive fractography we found that the WS2NTs inhibit crack propagation by bridging with a pullout failure mechanism.

Original languageEnglish
Pages (from-to)112-118
Number of pages7
JournalConstruction and Building Materials
Volume98
DOIs
StatePublished - 15 Nov 2015

Keywords

  • Cement
  • Dispersion
  • Fractography
  • Mechanical properties
  • Nano-composites
  • Nanotubes

ASJC Scopus subject areas

  • Civil and Structural Engineering
  • Building and Construction
  • Materials Science (all)

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