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

doi:10.1016/j.conbuildmat.2022.127404

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

Department of Civil Engineering

Istanbul Technical University

Research output: Contribution to journal › Article › peer-review

11 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 language	English
Article number	127404
Journal	Construction and Building Materials
Volume	333
DOIs	https://doi.org/10.1016/j.conbuildmat.2022.127404
Publication status	Published - 23 May 2022

Bibliographical note

Publisher Copyright:
© 2022 Elsevier Ltd

Funding

The authors gratefully acknowledge the “Ravago Chemicals Turkey” for providing colloidal nano-silica samples.

Keywords

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

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10.1016/j.conbuildmat.2022.127404

Cite this

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

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.",

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T1 - Micro and/or Nano-Silica modified moderate and high strength concrete

T2 - Rheology and synergistic effects on strength, elastic & inelastic behavior and microstructure

AU - Nuri Turkmenoglu, Hasan

AU - Boyaci, Busra

AU - Baran, Servan

AU - Nihat Bicakci, Sidar

AU - Nuri Atahan, Hakan

PY - 2022/5/23

Y1 - 2022/5/23

N2 - 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.

AB - 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.

KW - Compressive strength

KW - Discontinuity and critical stress limit

KW - ITZ

KW - Micro-silica

KW - Microstructure

KW - Nano-silica

KW - Rheology

KW - Splitting tensile strength

KW - Synergistic effect

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SN - 0950-0618

VL - 333

JO - Construction and Building Materials

JF - Construction and Building Materials

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ER -

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

Abstract

Bibliographical note

Funding

Keywords

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