Strengthening of concrete using fiber reinforced polymers (FRP) Dissertation

Strengthening of concrete using fiber reinforced polymers (FRP) - Dissertation Example Further, the energy dissipation capacity increases in multiples of 10of the retrofitted column-beam joints under increased displacements, till failure at 0.4g for unconfined frame and at 0.5g for confined frame. Accelerations of the shake table at 0.2g and 0.4g are observed and it is found that the acceleration of the shake table is higher under 0.4g by at least a factor of 10. Comparing accelerations of the left and right joints of the first and second floors respectively, it is found that the acceleration increases by at least a factor of 10between the floors and also based on higher accelerations of 0.4g when compared to 0.2g. The relative displacements of the first and second floor joints are measured and it is found that the relative displacement of the second floor joint was high (almost 4 times) to the point of breakdown while that of the first floor joints was same as that of the shake table at 0.4g. ... elative displacements of the two floor joints with respect to shake table are observed for 0.4g and 0.5g for confined frame and it is observed that while the displacement of the shake table is almost same or slightly higher by a factor of 10 for 0.5g as compared to displacement at 0.4g, there is little difference in displacement at the two floors at 0.4g, it is noted that the relative displacements of the two floors remain almost the same at 0.5g when compared to the same with those at 0.4g. Stability of the frame is more at 0.4g than at 0.5g. It is also more for the second floor joints than at the first floor joints. As axial compression is more at the first floor joints than at the second floor joints, the torsional capacity and ductility are high for the square RC column-beam joints. Further, as the FRP is bonded at the tension zones, in this case, the joints of beam-column, with external mounting, the flexure strength is increased and the seismic behaviour is improved with TFCÂ ® composite bonding at the joints of both the