Numerical Study of Flexural Behavior of Geopolymer Concrete Beam Reinforced with Carbon Fibre-Reinforced Polymer Bars

In an effort to create an environmentally concrete industry, "geopolymer concrete" has appeared as a less harmful alternative to "ordinary Portland concrete". In this paper, the Numerical research of flexural behavior of "geopolymer concrete" and "ordinary Portland concrete" beams reinforced with CFRP rebars by using the ANSYS program. The specimens have compressive strengths ranging from 20 to 50 MPa with varying reinforcement ratios. A numerical analysis was conducted using ANSYS to examine various parameters that impact the structural behavior of GPC beams, including longitudinal reinforcement, fiber addition, and opening inclusion. Test results revealed that GPC specimens with CFRP bars displayed higher deflection when contrasted with OPC specimens with CFRP bars. Research results suggest that the inclusion of "steel fibers (SF)" in geopolymer concrete led to improved resistance to load failure in specimens subjected to flexural stress. Moreover, utilizing CFRP bars for beam reinforcement exhibited superior resistance to bending moments compared to BFRP and GFRP bars. Furthermore, reinforcing "geopolymer concrete" beams with openings using FRP and steel bars significantly augmented the failure load of these beams.