Mechanical and microstructural properties of self-compacting concrete blended with metakaolin, ground granulated blast-furnace slag and fly ash

Sina Dadsetan, Jiping Bai

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Abstract

The aim of this study is to investigate the mechanical and microstructural properties of self-compacting concrete (SCC) mixtures containing three supplementary cementitious materials (SCMs), namely metakaolin, ground granulated blast-furnace slag and fly ash. For the mixtures, cement was replaced by SCMs at different levels. The mechanical properties were evaluated against a control mixture (without SCM). The microstructural properties were examined using SEM and EDS on mixtures with high volume of SCMs. The utilisation of SCMs enhanced compressive strengths. Metakaolin gave the most enhancing effect as a replacement material to cement on mechanical and microstructural properties of SCC at all ages.
Original languageEnglish
Article numberS0950061817308073
Pages (from-to)658-667
JournalConstruction and Building Materials
Volume146
DOIs
Publication statusPublished - 1 Aug 2017

Keywords

  • Self-compacting concrete
  • Mixture design method
  • Metakaolin
  • Ground granulated blast-furnace slag
  • Fly ash
  • Compressive strength
  • Modulus of elasticity
  • scanning electron microscope
  • SEM
  • Energy dispersive X-ray spectroscopy
  • EDS

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