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Composite behaviour of wide sandwich panels with thin high performance recycled aggregate concrete wythes with fibre reinforced polymer shear connectors

Composite behaviour of wide sandwich panels with thin high performance recycled aggregate... The traditional means of using precast concrete sandwich panels are restrictive in terms of applications, where thick wythes result in heavy panels which are often unsuitable in retrofitting domestic and commercial buildings. As concrete sandwich panel technology has evolved to make it more widely accessible, recent research work has demonstrated that it is possible to achieve thermally efficient partial composite action within a thin wythe panel provided non-conductive shear connectors are used. This paper examines high performance recycled aggregate concrete in heavily insulated non-load-bearing panels for retrofitting domestic and commercial buildings. A series of concrete mixes were tested to develop one which would be more sustainable than the widely accepted standard mixes for wythes. Different 220 mm thick concrete sandwich panels were tested consisting of 20 mm thick fibre-reinforced recycled aggregate concrete wythes and a 180 mm layer of XPS insulation. Unconnected and shear connected panels were tested in flexure in a displacement control test. The effects of composite action and post-cracking toughness were examined and it was concluded that a shear connected panel comprising sustainable thin recycled aggregate concrete wythes enclosing a thick layer of insulation is a feasible product to use for light high-performance sandwich panels. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Journal of Structural Integrity and Maintenance Taylor & Francis

Composite behaviour of wide sandwich panels with thin high performance recycled aggregate concrete wythes with fibre reinforced polymer shear connectors

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Composite behaviour of wide sandwich panels with thin high performance recycled aggregate concrete wythes with fibre reinforced polymer shear connectors

Abstract

The traditional means of using precast concrete sandwich panels are restrictive in terms of applications, where thick wythes result in heavy panels which are often unsuitable in retrofitting domestic and commercial buildings. As concrete sandwich panel technology has evolved to make it more widely accessible, recent research work has demonstrated that it is possible to achieve thermally efficient partial composite action within a thin wythe panel provided non-conductive shear connectors are...
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Publisher
Taylor & Francis
Copyright
© 2021 Korea Institute for Structural Maintenance and Inspection
ISSN
2470-5322
eISSN
2470-5314
DOI
10.1080/24705314.2021.1906089
Publisher site
See Article on Publisher Site

Abstract

The traditional means of using precast concrete sandwich panels are restrictive in terms of applications, where thick wythes result in heavy panels which are often unsuitable in retrofitting domestic and commercial buildings. As concrete sandwich panel technology has evolved to make it more widely accessible, recent research work has demonstrated that it is possible to achieve thermally efficient partial composite action within a thin wythe panel provided non-conductive shear connectors are used. This paper examines high performance recycled aggregate concrete in heavily insulated non-load-bearing panels for retrofitting domestic and commercial buildings. A series of concrete mixes were tested to develop one which would be more sustainable than the widely accepted standard mixes for wythes. Different 220 mm thick concrete sandwich panels were tested consisting of 20 mm thick fibre-reinforced recycled aggregate concrete wythes and a 180 mm layer of XPS insulation. Unconnected and shear connected panels were tested in flexure in a displacement control test. The effects of composite action and post-cracking toughness were examined and it was concluded that a shear connected panel comprising sustainable thin recycled aggregate concrete wythes enclosing a thick layer of insulation is a feasible product to use for light high-performance sandwich panels.

Journal

Journal of Structural Integrity and Maintenance – Taylor & Francis

Published: Jul 3, 2021

Keywords: Sandwich cladding panels; shear connectors; high-performance concrete

References

  • Pre-treatment of recycled concrete aggregates with silica fume
  • Ultra high-performance concrete utilizing fly ash as cement replacement under autoclaving technique
  • In-plane shear behaviour of insulated precast concrete sandwich panels with composite GFRP
  • Influence of amount of recycled coarse aggregates and production process on properties of recycled aggregate concrete
  • Composite behaviour of wide sandwich panels with high performance concrete thin wythes with and without Thermomass shear connectors
  • Short and long-term behaviour of structural concrete with recycled concrete aggregate
  • Estimation of fracture properties for high strength and ultra high strength concrete beams and size effect
  • Review of precast concrete sandwich panels and their innovations
  • Composite behaviour of fibre-reinforced concrete sandwich panels with FRP shear connectors
  • Development of thin precast concrete sandwich panels: Challenges and outcomes
  • Thermal investigation of thin precast concrete sandwich panels
  • Mechanical and fracture mechanics properties of ultra-high-performance concrete
  • Investigation on expansion effect of the expansive agents in ultra-high performance concrete
  • Flexural response of unconnected insulated concrete sandwich panels
  • Enhancing the tensile performance of ultra-high-performance concrete through strategic use of novel half-hooked fibres
  • Flexural fracture toughness and first-crack strength test of steel fibre-silica fume concrete and its engineering applications
  • Utilization of steel slag in ultra-high performance concrete with enhanced eco-friendliness