Behavior of Aluminum Columns Enhanced with CFRP and Filled by Lightweight Concrete | ||
| Engineering and Technology Journal | ||
| Article 5, Volume 32, Issue 11, October 2014, Pages 2658-2672 PDF (502.96 K) | ||
| DOI: 10.30684/etj.32.11A.5 | ||
| Author | ||
| ad Fahad Resan | ||
| Abstract | ||
| An experimental study of composite columns of hollow circular aluminum tubes enhanced with a fibers reinforced polymer (FRP) sheet and filled by lightweight concrete are presented in this paper. The study's scope is introducing and developing lightweight columns to be advantageous in lightweight and size limited structures. The test results discussed the influence of internal and external confinement effectiveness introduced by lightweight concrete and carbon fiber reinforced polymer (CFRP) retrofitting sheet, respectively. The column specimens were subjected to uniform axial compression load. Structural aluminum alloy circular hollow section has been used in this investigation. Carbon fiber reinforced polymer (CFRP) is used to piling aluminum tubes. Light weight expansion clay aggregate (LECA) is used to fabricate light weight concrete filling aluminum tubes. The strengths, shortening displacement, axial strains, lateral strains, and failure modes of columns were presented. The test results indicated that confinement and composite action between the constituent materials resulted in enhanced compressive strength, ductility and energy dissipation capacity of the proposed composite column. Finally, a simplified design equation is proposed to predict the compressive load capacity of this type of composite column. | ||
| Keywords | ||
| Fiber reinforced polymer; Light weight concrete; Axial load; Hollow aluminum tube; ductility | ||
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