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Retrofitting of reinforced concrete curved beams failed in shear under out of plane loading using carbon fibre reinforced polymer

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dc.contributor.advisor Gamage JCPH
dc.contributor.author Senaratne SAMANI
dc.date.accessioned 2022
dc.date.available 2022
dc.date.issued 2022
dc.identifier.citation Senaratne, S.A.M.A.N.I, (2022). Retrofitting of reinforced concrete curved beams failed in shear under out of plane loading using carbon fibre reinforced polymer [Master's theses, University of Moratuwa]. Institutional Repository University of Moratuwa. http://dl.lib.uom.lk/handle/123/20120
dc.identifier.uri http://dl.lib.uom.lk/handle/123/20120
dc.description.abstract Carbon Fibre Reinforced Polymer (CFRP) strengthening techniques have gained popularity compared to other retrofitting methods due to its superior performance. While ample research had been done regarding retrofitting of straight beams that have failed in shear, as per the author’s knowledge no research has been done regarding the retrofitting of curved beams that have failed in shear under out of plane loading. Due to the curvature of the beam, bending, shear and torsion all act together in resisting loads and hence it is important to study the effects of these on CFRP retrofitted curved beams. An experimental study consisting of four curved beams of 2m and 4m radii of curvature, which had previously failed under the combined effect of shear and torsion for out of plane loading were selected and were externally retrofitted using CFRP strips. The beams were then re-tested for their new failure loads and the load carrying capacities were compared with their original values. From the experimental program it was observed that two beams exhibited load carrying capacities of 122% and 117% of their original value while the other two exhibited load carrying capacities of 85% and 90%. The predominant mode of failure was CFRP strip de-bonding from its substrate. Therefore it was identified that by anchoring the CFRP strips to the substrate the carrying capacity could be significantly increased by delaying de-bonding load by distributing stresses across two of more CFRP strips. en_US
dc.language.iso en en_US
dc.subject FIBRE REINFORCED POLYMER COMPOSITES en_US
dc.subject CARBON FIBRE REINFORCED POLYMER en_US
dc.subject BEAM FAILURE en_US
dc.subject REINFORCED CONCRETE CURVED BEAMS en_US
dc.subject STRUCTURAL ENGINEERING - Dissertation en_US
dc.subject CIVIL ENGINEERING – Dissertation en_US
dc.title Retrofitting of reinforced concrete curved beams failed in shear under out of plane loading using carbon fibre reinforced polymer en_US
dc.type Thesis-Abstract en_US
dc.identifier.faculty Engineering en_US
dc.identifier.degree MSc in Structural Engineering en_US
dc.identifier.department Department of Civil Engineering en_US
dc.date.accept 2022
dc.identifier.accno TH4778 en_US


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