In recent decades, economic growth and globalization have spurred increased demand for efficient storage systems, leading to the extensive production of industrial racks from cold-formed steel profiles. Technological advances and research have significantly enhanced the optimization and mechanical efficiency of these profiles. However, older structures often require reassessment and strengthening to meet current and future load-bearing requirements, especially when systems are continuously in use and interventions must be minimized in terms of time and complexity. This paper investigates two strengthening solutions designed to improve the structural performance under various loading conditions, using experimental research to assess and understand the behavior of reinforced profiles. It presents a comparative analysis of the axial compression behavior of the base upright profiles of steel storage racks, each 1 m in length. A specific open cross-section with perforations was utilized, and a total of 13 specimens were tested: 5 unreinforced, 3 with ‘2L-shaped profiles’ for method 1, and 5 with ‘1C-shaped profile’ for method 2. For the strengthened profiles, both methods were secured inside the original profile using M8 bolts. The results demonstrate a 25% improvement in compression resistance capacity for method 2 and 4% for method 1, underscoring the effectiveness of these interventions.

The accumulation of end-of-life tyres represents a growing environmental burden, motivating the incorporation of tyre rubber as a partial aggregate replacement in concrete. However, the flexural performance of reinforced rubberized concrete (RuC) beams at high rubber contents and elevated longitudinal reinforcement ratios remains insufficiently investigated. This study experimentally examined the flexural behaviour of RC beams cast with conventional concrete and RuC incorporating 40% and 60% replacement of small coarse aggregate by volume, at longitudinal reinforcement ratios of 1.5% and 2.0%, approaching the over-reinforced range. Eighteen beams were tested under four-point bending until failure by concrete crushing, with deflection, crack development, and material properties monitored throughout. Rubber incorporation reduced the modulus of elasticity and compressive strength, corresponding to a Eurocode 2 class downgrade from C45/55 to C35/40, while increasing peak axial strain. At 1.5% reinforcement, increasing rubber content progressively enhanced deflection capacity and ductility, with RuC60 beams reaching a ductility coefficient of 2.52 versus 2.43 for conventional beams. At 2.0% reinforcement, this benefit was suppressed, with ductility converging to 1.40–1.47 across all mixes as compression zone crushing increasingly governed failure. These findings indicate that the structural benefits of high-rubber-content RuC are most pronounced in moderately reinforced beams and diminish as sections approach the over-reinforced regime, informing the applicability envelope of RuC for load-bearing flexural elements.