Numerical Investigation of GGBS Concrete Beam using Hybrid FRP and GFRP

Abstract

In the present study, nonlinear finite element analysis of ground granulated blast furnace slag (GGBS) concrete beam using steel, hybrid FRP and GFRP bars. The major variables are types of fine aggregates and reinforcement bars. From the experimental observation, the optimum percentage of GGBS is 30% replacement of cement. The 70% of cement and 30% of GGBS is maintained for all the mix. M20 grade concrete is used. Electric strain gauges are fixed at steel and concrete to measure the strain. Totally six no of beam were modeled. Nonlinear finite element analysis is carried out by finite element software ANSYS. Finite element analysis: the load is transferred trough the bearing plate to beam. Nonlinear material properties and nonlinear stress-strain curve for concrete is incorporated. Load increment step given by Newton-Raphson method. It observed that GGBS concrete beam using Hybrid FRP reaches the ultimate strain and stress in concrete.