Master Degree / Yüksek Lisans Tezleri
Permanent URI for this collectionhttps://hdl.handle.net/11147/3008
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Master Thesis Structural Behavior of Hybrid Fiber Reinforced Concrete Panels Under Blast Loads(01. Izmir Institute of Technology, 2021) Alkabbani, Mouhammed Jalal; Saatcı, Selçuk; Saatçi, Selçuk; 03.03. Department of Civil Engineering; 03. Faculty of Engineering; 01. Izmir Institute of TechnologyTerrorist attacks cause injuries and casualties not only due to direct effect of explosions, but also due to collapse of non-structural elements in buildings such as brick walls. Strengthening of non-blast resistant buildings to blast loads can be done using blast resistant cladding. In this study, structural behavior of panels manufactured using hybrid fiber reinforced concrete, composed of steel and synthetic polyvinyl alcohol (PVA) fibers, under blast loads was investigated and the potential use of such panels for the strengthening of existing buildings against blast loads was examined. For this purpose, 11 panels with 1900x1900x50 dimensions were tested under blast loads. Blast loads were applied on panels by a shock tube designed and manufactured within this project. As a result of the study, it was found that panels manufactured using hybrid fiber reinforced concrete had higher strength and energy absorption capacity under blast loads compared to panels manufactured by using steel fibers only. Using steel and PVA fibers provided a better control of micro and macro cracking and increased the panels' ductility. The study showed that hybrid fiber reinforced concrete panels can be used as a protective cladding for blast loads.Master Thesis Punching Behavior of Hybrid Fiber Reinforced Concrete Panels(01. Izmir Institute of Technology, 2020) Naseri, Jamalullah; Saatcı, Selçuk; Saatçi, Selçuk; 03.03. Department of Civil Engineering; 01. Izmir Institute of Technology; 03. Faculty of EngineeringHybrid fiber reinforced concrete (HyFRC) is a more recent type of fiber reinforced concrete (FRC), which includes two or more different fibers types. HyFRC may result in a multifunctional material due to synergetic effects of the various type of fibers added in the mixture. In this study, punching behavior of HyFRC thin panels using three different types of steel fibers and polyvinyl alcohol (PVA) fibers were experimentally investigated. In total 13 panel specimens were cast with dimensions of 1700 x 1700 mm2 and thickness of 50 mm. The specimens were simply supported along the edges and loaded through a 150 mm circular steel plate at the center by a displacement-controlled hydraulic actuator. A load cell and fifteen displacement transducers were used to measure the applied load and vertical deflection of the specimens, respectively. All specimens that contained only steel fibers failed under punching. In hybrid fiber reinforced specimens with steel and PVA fibers, either a flexural failure or a punching failure followed by significant flexural deformations were observed. Test results confirm that fiber reinforced concrete has a very significant effect on thin panel's punching strength and displacement capacity. It was seen that hybridization of two different types of fiber, steel and PVA fibers, brings advantages in terms of punching load capacity, deformation characteristics and failure mode.