Micro and/or Nano-Silica modified moderate and high strength concrete: Rheology and synergistic effects on strength, elastic & inelastic behavior and microstructure

Hasan Nuri Turkmenoglu*, Busra Boyaci, Servan Baran, Sidar Nihat Bicakci, Hakan Nuri Atahan

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

7 Citations (Scopus)

Abstract

Synergistic effects of micro-silica (MS) and nano-silica (NS) on moderate and high strength concrete properties were investigated. Efficacy of micro and nano refinement remarkably increased as the W/Cm ratio decreased, and up to 37% improvement in compressive strength was obtained. Moreover, the linear-elastic region of the stress vs. strain diagrams significantly extended. As a result of the synergistic effect, a very dense interfacial transition zone was formed. The time-dependent evolution of the elastic modulus was much more effective than the compressive strength development. However, the combined use of MS and NS significantly decreased ductility.

Original languageEnglish
Article number127404
JournalConstruction and Building Materials
Volume333
DOIs
Publication statusPublished - 23 May 2022

Bibliographical note

Publisher Copyright:
© 2022 Elsevier Ltd

Keywords

  • Compressive strength
  • Discontinuity and critical stress limit
  • ITZ
  • Micro-silica
  • Microstructure
  • Nano-silica
  • Rheology
  • Splitting tensile strength
  • Synergistic effect

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