Effects of Fiber Type and Shape on the Shear Behavior of Reinforced Concrete Corbels without Hoop Re-bars

In this research, the structural behavior of reinforced concrete brackets cast with containing different types fibers was studied. Seven samples corbels were and tested. One specimen without fiber as a reference, other made six at constant volume fraction (1% total volume). The used in research two materials: steel polyolefin. polyolefin fiber, five remaining samples, used. Straight, crimped, three dimensions hooked results showed that straight end (6, 5, 3 cm length), crimped sized cm, 12 mm, 6 69.2%, 57.7%, 38.5%, 61.5%, 92.3%, 100% higher cracking loads than control corbel normal concrete, respectively, well exhibiting (51.7%, 48.3%, 31.0%, 24.1%, 12.1%, 3.4%) ultimate corbel. From these results, it can be concluded shape clearly affects load. For same length, despite lack aspect ratio, gave an increase maximum load 46.6% when compared fibers. Doi: 10.28991/CEJ-2022-08-03-08 Full Text: PDF