Two-layer beams from normal and fibered high strength concrete

I. Iskhakov, Y. Ribakov

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

Abstract

Two-layer beams, consisting of fibered high strength concrete in compressed zone and normal strength concrete without fibers in the tensile one, are effective when the RC section carries rather big bending moments. Steel fibers have little effect on beams' elastic deformations, but increase the ultimate ones, due to the additional energy dissipation potential of fibers. Changing the fibers' content, a required ductility level can be achieved. Providing proper ductility is important for design of structures to seismic, wind and other dynamic loadings. It was demonstrated that calculation of fibers' content for such elements is important, like that of reinforcing steel bars for usual RC beams. The current study is focused on finding optimal fibre content, yielding the highest Poisson coefficient and consequently higher ductility of the beam's section. Fibre weight ratio is used as an alternative to fibre volume ratio as the first is a more accurate parameter for definition of fibre content in the concrete mixture. The experimental results, obtained in the frame of this study, form a basis for general provisions, related to manufacturing of two-layer beams.

Original languageEnglish
Title of host publicationISEC 2011 - 6th International Structural Engineering and Construction Conference
Subtitle of host publicationModern Methods and Advances in Structural Engineering and Construction
EditorsSiamak Yazdani, Sai On Cheung, Amarjit Singh, Nader Ghafoori
PublisherResearch Publishing Services
Pages1151-1154
Number of pages4
ISBN (Electronic)9789810879204
DOIs
StatePublished - 2011
Event6th International Structural Engineering and Construction Conference: Modern Methods and Advances in Structural Engineering and Construction, ISEC 2011 - Zurich, Switzerland
Duration: 21 Jun 201126 Jun 2011

Publication series

NameISEC 2011 - 6th International Structural Engineering and Construction Conference: Modern Methods and Advances in Structural Engineering and Construction

Conference

Conference6th International Structural Engineering and Construction Conference: Modern Methods and Advances in Structural Engineering and Construction, ISEC 2011
Country/TerritorySwitzerland
CityZurich
Period21/06/1126/06/11

Keywords

  • Composite structures
  • Concrete
  • Ductility
  • Poisson deformations
  • Two layer beams

All Science Journal Classification (ASJC) codes

  • Building and Construction
  • Civil and Structural Engineering

Fingerprint

Dive into the research topics of 'Two-layer beams from normal and fibered high strength concrete'. Together they form a unique fingerprint.

Cite this