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Investigation of an Innovative Technique for R.C. Square Footing Reinforced by GFRP and BFRP Bars with HSC

Mona I. Badawi, Marwa I. Badawi, Mahmoud Awwad

Abstract


The utilization of alternate reinforcement materials to improve footing capacity performance has garnered significant interest in recent years. Limited research has been conducted to understand the impacts of basalt reinforcement. This study aims to investigate the performance of the high-strength concrete (HSC) footing reinforced by alternative materials such as glass fiber-reinforced polymer (GFRP) bars and basalt fiber-reinforced polymer (BFRP) bars. This work contains experimental and finite element (FE) numerical modeling aimed at investigating the behavior and crack propagation of HSC footings. Axial load investigations were conducted on RC square footings with cross sections of 300×300×90 mm for different materials in reinforcing the RC footing, and an experimental investigation of mechanical properties has been carried out. The main reinforcement for the footing has been varied. Two types of material, namely, glass fiber-reinforced polymer (GFRP) bars and basalt fiber-reinforced polymer (BFRP) bars, were used. Four types of concrete mixture were used: normal concrete (NC), high-strength concrete (HSC), glass fiber-reinforced concrete (GFRC), and HSC+ glass fiber bristles. The experimental results demonstrated an improvement in the ultimate load by 28-49% and an enhancement in performance represented in the cracking pattern. Additionally, a 3D nonlinear finite element (FE) analysis utilizing Abaqus software was conducted to verify the numerical results with experimental findings; the results proved the suitability of the employed experimental setup.

 

Doi: 10.28991/CEJ-2025-011-04-017

Full Text: PDF


Keywords


GFRP Bars; BFRP Bars; FRP Concrete; Square Footing; FEM.

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Full Text: PDF

DOI: 10.28991/CEJ-2025-011-04-017

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Copyright (c) 2025 Mona Badawi, Mahmuod Awad, Marwa Badawi

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