Title:
Axial Behavior of Slender-Concrete-Filled FRP-Tube Columns Reinforced With Steel and Carbon-FRP Bars
Author(s):
Radhouane Masmoudi and Hamdy Mohamed
Publication:
Symposium Paper
Volume:
275
Issue:
Appears on pages(s):
1-20
Keywords:
CFFT, Slenderness Ratio; Columns; Reinforced Concrete, Glass-FRP tube; Carbon-FRP bars
DOI:
10.14359/51682468
Date:
3/1/2011
Abstract:
This paper presents the results of an experimental investigation on the strength and behavior of thirteen RC and CFFT columns. The effects of two parameters and their interactions on the buckling behavior were investigated; namely, the type of internal reinforcement (steel or CFRP bars) and the slenderness ratio. CFFT 152 mm, (6 in.)-diameter columns with different slenderness ratios 4, 8, 12, 16 and 20, were tested under pure compression load. Filament-winded FRP tubes with 2.65 mm (0.10 in.) thickness were used as a stay-in-place structural formwork for the CFFT columns. The axial compressive capacity of steel and CFRP-reinforced CFFT columns was reduced by 13% to 32% with increasing the slenderness ratio from 4 to 20. The behavior of CFRP bars as a compression reinforcement was generally similar to conventional steel bars. The test results indicated that the axial capacity of CFRP-reinforced CFFT columns is 13% lower compared to steel-reinforced CFFT columns.