<p>The safe disposal of rubber waste by recycling it into concrete mixes as a partial replacement for sand offers environmental benefits, reduces construction costs, and conserves natural resources. The current study experimentally investigates the production of reinforced concrete (RC) beams with shear deficiencies, incorporating rubber as a partial sand replacement at volume fractions of 10%, 30%, and 50%. The experimental program involved testing sixteen half-scale specimens under three-point bending to evaluate the feasibility of enhancing the shear response of RC beams using prefabricated strain-hardening cementitious composites (SHCC) plates reinforced with glass-fiber textile mesh (GFTM) layers. The studied parameters included strengthening technique (external bonding versus near-surface mounted (NSM) technique), strengthening configuration (vertical versus inclined at 45^o to the horizontal), and the anchoring method (epoxy only versus epoxy combined with anchor bolts). The results demonstrated that the strengthening plates effectively hindered the propagation of major shear cracks, which were commonly observed in unstrengthened specimens. Instead, secondary shear cracks with smaller widths developed. Among all the tested strengthening configurations, the specimen containing 10% rubber and strengthened with inclined plates using the NSM technique, secured with both epoxy and anchors, exhibited the highest response in terms of ultimate load, stiffness, and ductility. These properties increased by 35%, 41%, and 32%, respectively, compared to the control beam.</p>