Identifying viscosity of cement paste from mini-slump-flow test

Nathan Tregger*, Liberato Ferrara, Surendra P. Shah

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

58 Scopus citations

Abstract

Quality control of rheological properties is proving to be critical for the success of high-performance concretes such as selfconsolidating concrete (SCC). Yet, there are no widely accepted tests that can quickly and accurately determine these properties. Currently, the slump-flow test is used to assess workability qualitatively. However, fundamental parameters such as yield stress and viscosity provide a more complete view of workability through a rheological description. Previous studies have shown a correlation between the final spread of the slump-flow test and yield stress; the same holds for cement paste and mini-slump-flow test. This study intends to demonstrate a relationship between the time to final spread and viscosity for cement pastes. Although the study concerns cement paste, this information can help pave the way for an ultimate relationship for concrete. With this relationship, the slump-flow test will be able to provide adequate quality control measures for today's high-performance concrete mixtures.

Original languageEnglish (US)
Pages (from-to)558-566
Number of pages9
JournalACI Materials Journal
Volume105
Issue number6
StatePublished - Nov 1 2008

Keywords

  • Cement paste
  • Rheology
  • Slump
  • Spread-time
  • Viscosity
  • Yield stress

ASJC Scopus subject areas

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

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