This paper presents an experimental study on the behavior of circular, concretefilled,
steel tube (CFT) columns concentrically loaded in compression to failure. Selfcompacting
concrete (SCC) is used here as a filler in order to increase homogeneity of
the core and reduce segregation problems. Total six column specimens with different
lengths (0.4 m – 1.5 m) of constant diameter of 160 mm and wall thickness of 2.8 mm
were tested. The purpose here is to investigate the ultimate capacity and the
deformation behavior of different slenderness ratio columns. The behavior of these
columns in confinement was discussed.
Experimental results indicate that the compression force capacity is affected by
slenderness ratio of the column. For slender column the overall buckling was observed
while for the short columns the crushing and the local buckling is the dominant failure