Open AccessComparative Study on Axial Compressive Behaviour of CFST and Externally Wrapped CFRP Columns
Author(s) -
Seetha Raman,
S. Elavarasan,
K. Elango,
R. Saravanakumar,
D. Vivek,
V. Rajeshkumar,
R Gokulakrishnan
Publication year - 2021
Publication title -
iop conference series. materials science and engineering
Language(s) - English
Resource type - Journals
eISSN - 1757-899X
pISSN - 1757-8981
DOI - 10.1088/1757-899x/1145/1/012015
Subject(s) - buckling , materials science , column (typography) , structural engineering , composite material , compressive strength , durability , compression (physics) , reinforced concrete , engineering , connection (principal bundle)
Concrete column fails by crushing or bucking due to axial load in order to resist failure of confinement, concrete filled steel tubular column (CFST) and carbon fibre reinforced polymer (CFRP) wrapping are used. CFST member has its consecutive progression in the construction industries due to its high load carrying capacity upgraded ductile performance, need for form work is minimized and has greater confinement effect. CFRP wrapping provides resistance towards corrosion, light weight exceptional durability, increases strength over confinement. In this work, an experimental investigation between stunt and slender concrete filled steel tubular column is compared with conventional pcc strut and slender column externally wrapped by single and double layer of CFRP. Total of 8 specimen were tested under axial compression. The parameter varied is height (750mm, 1050mm). The diameter of the column is 75mm. M30 grade concrete is cast. End support condition is hinged. For short column slenderness ratio is 40, L/D is assumed to be 10 and for slender column slenderness ratio is 60 and L/D is assumed to be 14. From this study, the influence of slenderness ratio over an effect of confinement is observed. Maximum axial compressive strength of the column is recorded and it is compared with eurocode4, AS/ACI code, IS516:1959 code. The behaviour of column both experimental and analytical results is observed.