Constitutive rheological control to develop a self-consolidating engineered cementitious composite reinforced with hydrophilic poly(vinyl alcohol) fibers

Hyun Joon Kong, Stacy G. Bike, Victor C. Li

Research output: Contribution to journalArticlepeer-review

Abstract

A self-consolidating engineered cementitious composite (ECC), which exhibits tensile strain-hardening behavior in the hardened state, while maintaining self-consolidating properties in the fresh state, has been developed by employing hydrophilic poly(vinyl alcohol) (PVA) fibers. The constitutive rheological design approach is adopted to separately control the aggregation between cement particles and sedimentation behavior with a combination of a strong polyelectrolyte and non-ionic polymer. This study suggests an effective formulation approach of fresh cementitious mix to maximize its fluidity without segregation, regardless of solids concentration employed. The resulting self-consolidating PVA-ECC exhibits tensile strain up to 5%. Besides, the methodology of constitutive rheological control can be extended to formulating other self-consolidating cementitious materials with various types of polymeric admixtures.

Original languageEnglish (US)
Pages (from-to)333-341
Number of pages9
JournalCement and Concrete Composites
Volume25
Issue number3
DOIs
StatePublished - Apr 1 2003

Keywords

  • Constitutive rheological design
  • Electrosteric stabilization
  • Non-ionic polymer
  • PVA fibers
  • Self-consolidating ECC
  • Strong polyelectrolyte

ASJC Scopus subject areas

  • Industrial and Manufacturing Engineering
  • Ceramics and Composites

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