Predicting dynamic segregation of self-consolidating concrete from the slump-flow test

Nathan Tregger*, Liberato Ferrara, Surendra Shah

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

10 Scopus citations

Abstract

Two key characteristics of self-consolidating concrete are flowability and segregation resistance. Quality control of flowability is typically predicted by the final diameter of the slump-flow test. In this paper, experimental results demonstrate that dynamic segregation of a self-consolidating concrete mix can also be predicted from the slump-flow test by measuring the time it takes for the flow to reach its final diameter. For a constant final diameter and aggregate content, increasing the time to final diameter led to a more stable mix. Two sets of slump-flow and segregation data were obtained for flow diameters of 65 and 70 cm, both with constant water-to-binder and aggregate-to-binder ratios. Dynamic segregation was determined by comparing the aggregate content in three regions: Within the diameter of the slump cone, between the diameter of the cone and a diameter of 50 cm, and between a diameter of 50 cm and the final diameter. In addition, the rapid penetration test was used to compare dynamic and static segregation characteristics.

Original languageEnglish (US)
JournalJournal of ASTM International
Volume7
Issue number1
DOIs
StatePublished - Jan 2010

Keywords

  • SCC
  • Segregation
  • Slump-flow test
  • T
  • Viscosity
  • Yield stress

ASJC Scopus subject areas

  • Environmental Engineering
  • Materials Science(all)
  • Nuclear Energy and Engineering
  • Engineering(all)
  • Public Health, Environmental and Occupational Health

Fingerprint

Dive into the research topics of 'Predicting dynamic segregation of self-consolidating concrete from the slump-flow test'. Together they form a unique fingerprint.

Cite this