The Faculty of Engineering at the University of Kerbala has discussed an M.A. thesis entitled (Treating damaged concrete slabs two-way by using carbon fiber reinforced plastic).
The thesis presented by the student Safa Adel Mutak aims at identifying ways to treat damaged slab concrete.
The thesis deals with the bidirectional behaviour of the damaged concrete slabs and its treatment with CFRP sheets, two types of concrete have been used (HSC, NC), where four slabs are used for two types of concrete. One panel is a control panel (untreated) and three panels divided into two groups [different percentage of damage (50%, 75%) and different repair shape].
The thesis indicates that repairing the damaged slab by CFRP increased the final load by about (26.7, 18.33%) for (50% damage percentage) and (20%) for (75% damage percentage) compared to the untreated slab (control) with respect to (NC) and about (41.18, 35.29%) for (50% damage percentage) and (36.76%) for (75% damage percentage) compared to (control) untreated slab for HSC)). Carbon fiber reinforced concrete sheets (CFRP) external to reinforced concrete panels increase the stiffness of the panels throughout the loading period, which reduces the deflection in the corresponding loads, and the decrease in the maximum deflection is about (67.26, 71.17%) for (50% damage ratio) and (59.18%) For (75% damage percentage) compared to untreated (control) tile for (NC) and about (67.01, 68.63%) for (50% damage percentage) and (56.02%) for (75% damage percentage) compared to untreated (control) tile ) For (HSC). The use of carbon fiber reinforced concrete sheets as an external repair has a significant effect on the crack pattern of bi-directional reinforced concrete panels by delaying the appearance of cracks.
