Experimental study on flexural and shear behavior of steel beams using carbon laminate

In the present paper, results of an experimental study on strengthening and reinforcing of steel beams under mechanical loads have been presented. Totally, eight steel specimens with span’s lengths of 0.2, 0.5 meter were reinforced by carbon laminates and subjected to 3-point bending load. Two failure modes of shear yielding, flexural yielding in the beams were examined. For specimens with failure modes of shear yielding, carbon laminates are used on web of beams and for specimens with failure modes of flexural yielding, carbon laminates are used on tensional and compressive flanges and compressive flanges of beams, respectively. The results showed a significant improvement in strength and ductility of steel beams.