cfrp eeffects on reinforced concrete deep beams

deep beams are type of beams which their behavior is different from conventional beams because of their particular type of geometry. in this paper, the retrofitting of these beams is considered and 10 deep beams are tested experimentally and discussed about retrofitting methods. experimental studies indicate that the use of cfrp bands in the direction perpendicular to diagonal cracks in comparison with the use of cfrp in vertical direction are appropriate in condition that many cfrp with less width be used instead of using wide cfrp with lower number. the comparison of the experimental results is conducted with the results of existing relations in literature. the comparison shows that the existing relations cannot correctly predict the behavior and ultimate load of deep beams retrofitted by frp tested in this paper.