This paper presents a study of the flexural behavior of strengthened and repaired reinforced concrete slabs by ferrocement. The study includes testing 17 simply supported slabs, which include 2 control slabs, 3 strengthened slabs and 12 repaired slabs. In the strengthenedslabs the effect of number of wire mesh layers of ferrocement on the ultimate load, mid span deflection at ultimate load and intensity of cracks were examined. In the repaired part the slabs were stressed to (70 %) of measured ultimate loadof control slab. The effectsof number of wire mesh layers, ferrocement thickness and the connection method between repaired slabsand ferrocementjacket on the ultimate load, mid span deflection at ultimate load and intensity of cracks were examined.
Keywords: Concrete, ferrocement, repair, slab, strengthening