Flexural strength for insulated concrete sandwich wall panel reinforced with glassfiber-reinforced polymer shear grids: Roughness-induced mechanical bonding

J. H. Kim, K. S. Choi

Research output: Contribution to journalArticle

Abstract

Insulated concrete sandwich wall panel systems proposed in this paper were reinforced with glassfiber-reinforced polymer (GFRP) grids as continuous shear connectors. This continuous shear grid connecting inner/outer concrete wythes is advantageous to induce mechanical bond between concrete and insulation. Three different surface roughness was adopted to investigate the effect of mechanical bonding on flexural strength of extruded polystyrene-insulated concrete sandwich wall panels. An experimental programme is organised to conduct full-scale bending tests with three groups of original surface, mechanically roughened surface and traction-free surface of extruded polystyrne (XPS) foams. The load-deflection behaviour was investigated at different number of shear grids in terms of strength, stiffness and deformation capacity. Mechanical bond dependence on the flexural strength could be quantified at different surface treatment and should be considered in design of continuous shear grids for insulated concrete sandwich wall panel systems.

Original languageEnglish
Pages (from-to)397-400
Number of pages4
JournalMaterials Research Innovations
Volume19
DOIs
Publication statusPublished - 2015 Nov

Fingerprint

flexural strength
Bending strength
Polymers
roughness
Surface roughness
grids
Concretes
shear
polymers
traction
connectors
Polystyrenes
Bending tests
surface treatment
foams
insulation
Surface treatment
Foams
Insulation
deflection

All Science Journal Classification (ASJC) codes

  • Materials Science(all)
  • Condensed Matter Physics
  • Mechanics of Materials
  • Mechanical Engineering

Cite this

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abstract = "Insulated concrete sandwich wall panel systems proposed in this paper were reinforced with glassfiber-reinforced polymer (GFRP) grids as continuous shear connectors. This continuous shear grid connecting inner/outer concrete wythes is advantageous to induce mechanical bond between concrete and insulation. Three different surface roughness was adopted to investigate the effect of mechanical bonding on flexural strength of extruded polystyrene-insulated concrete sandwich wall panels. An experimental programme is organised to conduct full-scale bending tests with three groups of original surface, mechanically roughened surface and traction-free surface of extruded polystyrne (XPS) foams. The load-deflection behaviour was investigated at different number of shear grids in terms of strength, stiffness and deformation capacity. Mechanical bond dependence on the flexural strength could be quantified at different surface treatment and should be considered in design of continuous shear grids for insulated concrete sandwich wall panel systems.",
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