![]() ![]() ![]() Real-scale testing of elevated flat slabs confirmed the possibility of even total substitution of traditional reinforcement through using fibers in the concrete mix, this providing sufficient and even enhanced flexural and punching strength. 1- 7 The obtained results highlighted the enhanced structural response in terms of ductility, 3, 6, 7 cracking control, 1, 2, 5 and load redistribution. Numerous laboratory tests were carried out, varying the fiber/rebar content, slab geometry, boundary, and load conditions. This outcome may motivate current practitioners to consider hybrid reinforced concrete solutions as a possible alternative during the design of residential and office buildings.ĭuring the last two decades, considerable scientific efforts have been made to identify and quantify the full potential of fiber reinforced concrete (FRC) and hybrid reinforced concrete (combination of steel reinforcing bars and fibers, HRC) slabs in statically redundant structures. Based on the achieved results, its suitable accuracy and precision can be pointed out. Furthermore, a nonlinear finite element analysis is carried out in order to evaluate the effectiveness of the developed simplified method. Two hybrid reinforced alternatives for a given flat slab are studied by means of the proposed approach. Considering the above-mentioned, this article presents a simplified design-oriented method that covers the evaluation of the structural response of hybrid reinforced concrete column-supported flat slabs in terms of flexural strength, cracking, and instantaneous deformations. However, the lack of design-oriented recommendations based on the accepted limit state format for dealing with both serviceability and ultimate limit states slows down the wider implementation of this technology. Constructed hybrid-reinforced buildings prove that hybrid solutions have sufficient bearing capacity to maintain structural integrity despite being exposed to high stress levels, thereby providing a beneficial solution in terms of toughness, ductility, and sustainability performance. Hybrid reinforced technology (combination of steel reinforcing bars and fibers) can be considered as a competitive alternative to the already existing solutions for the construction of column-supported flat slabs. ![]()
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