Investigation of buckling behavior of FRP-concrete hybrid columns

Abstract

The use of fiber reinforced plastic (FRP) composite materials in the construction industry increases with each passing day. In recent years, these materials are used as carrier material or reinforcement material in the structure. Glass fiber reinforced plastic (GFRP) profiles are among the most preferred FRP composite materials. GRFP profiles stand out with their high tensile strength, light weight and high corrosion performance. The hybrid use of these materials with classical construction materials offers new advantages. The buckling behavior of the hybrid material formed by placing concrete in plastic state into GFRP box profiles with high tensile strength was investigated in this study. The buckling performance of hybrid columns formed using GFRP profile, normal concrete or reactive powder concrete (RPC) was studied. To this end, normal concrete-GFRP profile and RPC-GFRP profile hybrid columns were produced and buckling testing was performed at different slenderness values. Charts were created after buckling experiments to examine differences in the behavior of the material. As a result of the examinations, the effect of RPC and column slenderness on the buckling performance hybrid columns was identified.