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Title: Shear behaviour of corroded reinforced concrete T-beams repaired with fibre reinforced polymer systems
Author: Qin, Shunde
ISNI:       0000 0004 5994 3863
Awarding Body: University of Birmingham
Current Institution: University of Birmingham
Date of Award: 2016
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This study investigates the shear behaviour of corrosion-damaged reinforced concrete Tbeams repaired with fibre reinforced polymer (FRP) systems. Nine beams with different corrosion levels (0% (uncorroded), 7% and 12%) and different strengthening methods were tested. Both the embedded Carbon-FRP rods and externally bonded Carbon-FRP sheets were effective in enhancing the shear strength of tested beams. The test beams were modelled using nonlinear three dimensional half models in the finite element (FE) package TNO Diana. The shear force capacity, shear force-deflection graphs and crack patterns at failure were used to validate the FE models. Reasonable agreement was obtained between the experimental and numerical results. A parametric study investigating the effect of concrete strength, steel-to-CFRP shear reinforcement ratio and shear span-to-effective depth ratio was carried out. The FE predictions suggest that the embedded CFRP shear contribution decreases with the increase in steel-to-CFRP shear reinforcement ratio and shear span-to-effective depth ratio. Finally, the FE predictions were compared with the predictions of Concrete Society TR55 design guidance. The results suggest that TR55 overestimates the shear strength enhancement offered by embedded CFRP rods.
Supervisor: Not available Sponsor: Engineering and Physical Sciences Research Council
Qualification Name: Thesis (Ph.D.) Qualification Level: Doctoral
EThOS ID:  DOI: Not available
Keywords: TA Engineering (General). Civil engineering (General)