Seismic Performance of Reinforced Cantilever Columns in Earthquake Environments through Nano-GFRP Retrofitting
J. Environ. Nanotechnol., Volume 13, No 4 (2024) pp. 11-19
Abstract
The objective of this study is to evaluate the seismic behavior of reinforced concrete (RC) columns retrofitted with glass fiber reinforced polymers (GFRP). To achieve this, square RC columns measuring 1200 mm × 180 mm were cast and tested under lateral cyclic load. Two methods of wrapping, partially wrapped and fully wrapped column were used to obtain the seismic behavior of columns. Accordingly, energy absorption, stiffness, ductility, maximum bearing capacity and deformation of the specimen were examined. The glass fibers have significant impact on the results of maximum deformation; the energy absorption and stiffness of specimens wrapped with glass fiber sheets increased under seismic loads by 96% and 130%, respectively. The ductility of the specimens improved by 33% and 93% compared to conventional columns.
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