Behaviour of eccentric loading of FRP confined fibre steel reinforced concrete columns

This paper presents results of testing 16 specimens, 12 of which as columns under different eccentricities

and four as beams under four point loading regime. All 16 specimens were circular in cross section and

were made of reinforced concrete. Four specimens served as reference specimens and were just made of

reinforced concrete. The next four specimens were wrapped with carbon fibre reinforced polymers

(CFRP). The next four specimens had steel fibres added to the concrete. The final four specimens were

reinforced with steel fibres and wrapped with CFRP. From each group of specimens, one specimen was

tested as a column under a concentric load, the second specimen was tested as a column under

25 mm eccentricity, the third specimen was tested as a column under 50 mm eccentricity, and the final

specimen was tested as a beam under four point loading regime. The experimental programme proved

that the introduction of fibres as well as wrapping the specimens with FRP improve the properties of concrete,

especially its ductility.