This paper presents the main features of finite element FE numerical model developed usingthe computer code FEMIX to predict the near-surface mounted NSM carbon-fiber-reinforcedpolymer CFRP rods shear repair contribution to corroded reinforced concrete RC beams. Inthe RC beams shear repaired with NSM technique, the Carbon Fibre Reinforced Polymer(CFRP) rods are placed inside pre-cut grooves onto the concrete cover of the RC beam’slateral faces and are bonded to the concrete with high epoxy adhesive. Experimental and 3Dnumerical modelling results are presented in this paper in terms of load-deflection curves, andfailure modes for 4 short corroded beams: two corroded beams (A1CL3-B and A1CL3-SB)and two control beams (A1T-B and A1T-SB), the beams noted with B were let repaired inbending only with NSM CFRP rods while the ones noted with SB were repaired in bothbending and shear with NSM technique. The corrosion of the tensile steel bars and its effecton the shear capacity of the RC beams was discussed. Results showed that the FE model wasable to capture the main aspects of the experimental load-deflection curves of the RC beams,moreover it has presented the experimental failure modes and FE numerical modelling crackpatterns and both gave similar results for non-shear repaired beams which failed in diagonaltension mode of failure and for shear-repaired beams which failed due to large flexural crackat the middle of the beams along with the concrete crushing, three dimensional crack patternswere produced for shear-repaired beams in order to investigate the splitting cracks occurred atthe middle of the beams and near the support.
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