Get 20M+ Full-Text Papers For Less Than $1.50/day. Start a 14-Day Trial for You or Your Team.

Learn More →

Hybrid confinement of high strength concrete using shape memory alloys and fiber-reinforced polymers

Hybrid confinement of high strength concrete using shape memory alloys and fiber-reinforced polymers AbstractThis exploratory study investigates an innovative hybrid confinement technique for high-strength concrete (HSC) which combines traditional passive confinement applied using fiber-reinforced polymer (FRP) sheets with active confinement applied using thermally pre-stressed shape memory alloy (SMA) spirals. Normal strength concrete (NSC) and HSC cylinder specimens, confined either with traditional FRP confinement or hybrid confinement, are tested under uniaxial cyclic compression. Test results indicate that the application of hybrid confinement on HSC with a small active component results in a significantly higher ductility in comparison to passively confined HSC. The experimental test results are then used to carry out pushover analysis of high strength concrete-filled fiber tube (CFFT) bridge columns wrapped with SMA spirals. The pushover analyses show that the application of active confinement improves the ultimate drift ratio of high strength CFFT columns. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Journal of Structural Integrity and Maintenance Taylor & Francis

Hybrid confinement of high strength concrete using shape memory alloys and fiber-reinforced polymers

Download PDF

Hybrid confinement of high strength concrete using shape memory alloys and fiber-reinforced polymers

Abstract

AbstractThis exploratory study investigates an innovative hybrid confinement technique for high-strength concrete (HSC) which combines traditional passive confinement applied using fiber-reinforced polymer (FRP) sheets with active confinement applied using thermally pre-stressed shape memory alloy (SMA) spirals. Normal strength concrete (NSC) and HSC cylinder specimens, confined either with traditional FRP confinement or hybrid confinement, are tested under uniaxial cyclic compression. Test...
Loading next page...
 
/lp/taylor-francis/hybrid-confinement-of-high-strength-concrete-using-shape-memory-alloys-BV02rzdiAY
Publisher
Taylor & Francis
Copyright
© 2018 Korea Institute for Structural Maintenance and Inspection
ISSN
2470-5322
eISSN
2470-5314
DOI
10.1080/24705314.2018.1426172
Publisher site
See Article on Publisher Site

Abstract

AbstractThis exploratory study investigates an innovative hybrid confinement technique for high-strength concrete (HSC) which combines traditional passive confinement applied using fiber-reinforced polymer (FRP) sheets with active confinement applied using thermally pre-stressed shape memory alloy (SMA) spirals. Normal strength concrete (NSC) and HSC cylinder specimens, confined either with traditional FRP confinement or hybrid confinement, are tested under uniaxial cyclic compression. Test results indicate that the application of hybrid confinement on HSC with a small active component results in a significantly higher ductility in comparison to passively confined HSC. The experimental test results are then used to carry out pushover analysis of high strength concrete-filled fiber tube (CFFT) bridge columns wrapped with SMA spirals. The pushover analyses show that the application of active confinement improves the ultimate drift ratio of high strength CFFT columns.

Journal

Journal of Structural Integrity and Maintenance – Taylor & Francis

Published: Jan 2, 2018

Keywords: Shape memory alloys; Fiber-reinforced polymers; high strength concrete; confinement; ductility; concrete-filled fiber tubes

References

  • Seismic retrofitting of bridge columns using shape memory alloys
  • Stress-strain relationship of confined and unconfined concrete
  • Deformation properties and ductility of high-strength concrete
  • Complete triaxial stress-strain curves of high-strength concrete
  • Cyclic stress–strain behavior of concrete confined with NiTiNb-shape memory alloy spirals
  • Mechanical behavior of concrete columns confined by basalt FRP windings
  • Experimental study of normal and high-strength concrete confined with fiber-reinforced polymers
  • Flexural behavior of circular concrete filled FRP shells
  • Thermomechanical characterization of NiTiNb shape memory alloy for concrete active confinement applications
  • Normal and high-strength concrete circular elements wrapped with FRP composites
  • Behavior of axially loaded concrete-filled circular fiber-reinforced polymer tubes
  • Fiber-reinforced plastic jackets for ductility enhancement of reinforced concrete bridge columns with poor lap-splice detailing
  • Creep, shrinkage, and modulus of elasticity of high-performance concrete
  • Active confinement of concrete members with self-stressing composites
  • Experimental study of FRP confined concrete cylinders
  • Experimental study of plain concrete under triaxial stress
  • Behavior of high strength concrete with and without steel fiber reinforcement in triaxial compression
  • Theoretical stress-strain model for confined concrete
  • Spirally reinforced high-strength concrete columns
  • A new concrete-filled hollow FRP composite column
  • Behavior of concrete columns confined by fiber composites
  • Strength and ductility of hybrid FRP-concrete beam-columns
  • Ductility improvement of high-strength concrete columns with lateral confinement
  • Shrinkage and creep of high strength concrete
  • Behavior of FRP-confined normal- and high-strength concrete under cyclic axial compression
  • Seismic behavior of high-strength concrete columns confined by fiber-reinforced polymer tubes
  • Seismic performance of square high-strength concrete columns in FRP stay-in-place formwork
  • Axial compressive behavior of circular high-strength concrete-filled FRP tubes
  • Strength and deformability of confined high-strength concrete columns
  • Circular high-strength concrete columns under concentric compression
  • External prestressing concrete columns for improved seismic shear resistance
  • Experimental investigation of cyclic behavior of concrete-filled fiber reinforced polymer tubes
  • Experimental investigation of actively confined concrete using shape memory alloys
  • Lateral cyclic behavior of reinforced concrete columns retrofitted with shape memory spirals and FRP wraps
  • Shrinkage and creep of high, medium, and low-strength concretes, including overloads
  • Heat activated prestressing of NiTiNb shape memory alloy for active confinement of concrete sections
  • Behavior of laterally confined high‐strength concrete under axial loads
  • The effect of pretensioned FRP windings on the behavior of concrete columns in axial compression