Performance of NSM-FRP RC beams in flexure and shear using locally developed CFRP rebars

Abstract

Results of an experimental study on flexural behaviour of steel-reinforced portal frames made of ductile fibre-reinforced cementitious composite and concrete under static transverse bending are reported in this paper. A total of six half-scale frames were cast and tested. It was observed that the frames partially or fully made of ductile fibre-reinforced cementitious composite have about 21–37% higher load-carrying capacity than ordinary concrete frames. Moreover, frames completely made of ductile fibre-reinforced cementitious composite are shown to have 1·5–2 times more ductility than the control frame. The failure modes of ductile fibre-reinforced cementitious composite frames were very ductile with multiple microcracks and the general pattern was flexural tension. In addition to the frame specimens, ductile fibre-reinforced cementitious composite tensile coupons, compressive cylinders and concrete cubes were also cast and evaluated.