Journal of the Korean Society for Advanced Composite Structures (복합신소재구조학회 논문집)

Korean Society for Advanced Composite Structures (한국복합신소재구조학회)
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Torsional Behavior of Beams Retrofitted by PVA-ECC

PVA-ECC에 의해 피복 보강된 RC보의 비틀림 거동에 대한 연구

  • Jeong, Yeong-Seok (Department of Civil Engineering, Gyeongsang National University) ;
  • Kwon, Min-Ho (Department of Civil Engineering, ERI, Gyeongsang National University) ;
  • Seo, Hyeon-Soo (Department of Civil Engineering, Gyeongsang National University) ;
  • Kim, Jin-Sup (Department of Civil Engineering, Gyeongsang National University) ;
  • Kim, Gi-Yeong (Department of Civil Engineering, University of Texas at Arlington)
  • Received : 2015.02.17
  • Accepted : 2015.02.26
  • Published : 2015.03.31
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Abstract

The need to consider torsion in the design of members of a structure has recently been increasing; therefore, many studies on torsion have been carried out. Recent research was focused on the torsional performance of concrete according to the reinforcing materials used. Of particular interest, are torsion studies of beams made of SFRC(steel fiber reinforced concrete), and there has been increasing use of SFRC at construction sites. In contrast, research on the composite PVA-ECC (polyvinyl alcohol-engineered cementitious composite) has only covered its mechanical performance, though it exhibits excellent tensile-strain performance (better than SFRC). Therefore, research on the torsion of concrete beams retrofitted using PVA-ECC is lacking. In this study, the behavior characteristics and performance of reinforced-concrete beams retrofitted by PVA-ECC was investigated experimentally. The experimental results show that the resistance to torsional cracking is increased by PVA-ECC. In addition, the strain on the rebar of the specimen was found to be reduced.

Keywords

References

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