Salahaldein Alsadey, Alsaadi Albakoush
External strengthening with Fibre Reinforced Polymers (FRP) has been growing in recent years for strengthening and retrofitting of concrete and steel structures. Most of the studies focused on high-strength concretes, and research on FRP-confined low-strength concrete has been very limited. Hence an endeavour has been made to examine the compressive behavior of concrete specimens (cylinders) strengthened with FRP. This study exemplifies the results of experimental investigation on the behaviour of axially loaded concrete wrapped with glass fibre reinforced polymer (GFRP) compared with unconfined concrete strength in the range of 25 MPa. Totally ten cylinders specimens were fabricated and tested under axial compression load. Two specimens were retained as control specimen and the remaining eight specimens were wrapping used GFRP fabrics strips. This study investigated three variables included full confined wrapped, spacing and orientation of GFRP strips were examined. The result of this investigation indicates that the gain in compressive strength varied between 30.80 % and 41.40 %. In addition to ease of application, compressive strength of GFRP-confined concrete was enhanced in all strengthening parameters indicating that strengthening of concrete using GFRP strips is an effective process, thus helping to reduce life cycle costs.
Glass, Fibre, Reinforced Polymer, Ultimate load, Confined, Strengthening
Cite this paper
Salahaldein Alsadey, Alsaadi Albakoush. (2021) Strengthening of Cylinders Concrete Confined with Glass Fibre Reinforced Polymer. International Journal of Chemistry and Chemical Engineering Systems, 6, 119-124