Sorptivity of self-compacting concrete containing fly ash and silica fume

H. Y. Leung, J. Kim, A. Nadeem, Jayaprakash Jaganathan, M. P. Anwar

Research output: Contribution to journalArticlepeer-review

74 Citations (Scopus)

Abstract

This paper presents the surface water absorption of self-compacting concrete (SCC) containing fly ash and silica fume using sorptivity test. Ordinary Portland cement was partially replaced by various combinations of fly ash and silica fume. Test results show that the presence of fly ash and silica fume significantly reduce the surface water absorption of self-compacting concrete at a water-binder ratio of 0.38. When only fly ash is used to partially replace Ordinary Portland cement, a more noticeable reduction in sorptivity is found when the fly ash content is greater than 20%. The effect of combined use of fly ash and silica fume on reducing the water absorption and sorptivity is much more significant than using fly ash only. Moreover, it is noted that increasing the proportion of fly ash and silica fume leads to an enhanced reduction in water absorption. The addition of fly ash and silica fume, in general, increases the 28-day cube strength. However, there is no correlation between the compressive strength and the sorptivity in SCC achieved.

Original languageEnglish
Pages (from-to)369-375
Number of pages7
JournalConstruction and Building Materials
Volume113
DOIs
Publication statusPublished - Jun 15 2016

Keywords

  • Compressive strength
  • Fly ash
  • Self-compacting concrete
  • Silica fume
  • Sorptivity
  • Water absorption

ASJC Scopus subject areas

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

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