Self-consolidating concrete and its bond to reinforcement

Antonios Kanellopoulos, Michael F. Petrou, Ioannis Ioannou

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

Research has shown that high slump concrete mixtures can exhibit bond problems especially at the top-cast bars due to blocking of bleed water underneath the reinforcement. As far as self-consolidating concrete is concerned there are many conflicting results in the literature regarding its bond to reinforcement. The scope of this paper is to present an experimental methodology on assessing the quality of the interface between concrete and steel bars. Four different self-consolidating concrete and conventional vibrated concrete mixtures, with diverse rheological characteristics, are examined. The quality of the interface is assessed by image analysis of cut sections containing reinforcement bars at different cast-heights. The experimental investigation revealed the formation of significant caving under the top-cast bars, which can affect considerably the bond strength.

Original languageEnglish
Title of host publication3rd International fib Congress and Exhibition, Incorporating the PCI Annual Convention and Bridge Conference: Think Globally, Build Locally, Proceedings
PublisherPrecast Prestressed Concrete Institute
ISBN (Electronic)9780937040904
Publication statusPublished - 2010
Event3rd International fib Congress and Exhibition, Incorporating the PCI Annual Convention and Bridge Conference 2010 - Washington, United States
Duration: 29 May 20102 Jun 2010

Conference

Conference3rd International fib Congress and Exhibition, Incorporating the PCI Annual Convention and Bridge Conference 2010
Country/TerritoryUnited States
CityWashington
Period29/05/102/06/10

Keywords

  • Bond interface
  • Bond quality
  • Image analysis
  • Self-consolidating concrete

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