H. Marzouk - Ryerson University, Toronto, Canada

Seismic retrofitting of existing concrete structural elements is a viable means for improving the performance of such elements. Plenty of strengthening-related research work on beams, columns and beam-columns has been conducted. However, research work related to concrete plates and beam-column connections strengthening is very scarce. Hence, there are academic and industrial needs to investigate such an issue experimentally and theoretically. This research work presents an experimental and theoretical investigation of the shear and flexural strengthening of concrete plates.The experimental phase of this research work includes testing of three groups of specimens. The first and second groups are composed of specimens strengthened using steel plates and steel bolts. The specimens of the first group are loaded concentrically only. The second group of specimens is loaded centrally combined with a lateral static or cyclic moment. The specimens of the third group are loaded centrally and strengthened with either Carbon Fibre Reinforced Polymer (CFRP) strips or Glass Fibre Reinforced Polymer (GFRP) laminates

Steel Strengthening, GFRP strengthening; Concrete Plates and Cyclic moment on beam column connections