Scholarlink

<p>A study was initiated to develop a non-ferrous reinforcement system for concrete beams aimed at addressing the corrosion issues associated with traditional steel reinforcement. This approach combines Glass Fibre Reinforced Polymer (GFRP) bars and Fibre Reinforced Concrete (FRC). This study examines the flexural performance and ductility behaviour of basalt FRC beams reinforced with GFRP bars. Additionally, it explores the effectiveness of a U-wrap strengthening technique using GFRP fabric to enhance the strength of beams. Basalt fibres of two different lengths 12&#xa0;mm and 30&#xa0;mm are incorporated into the concrete matrix for elevating the concrete matrix’s attributes. The GFRP beams were examined utilising a four-point bending setup with an effective span of 900&#xa0;mm, and the results report on strength, ductility and failure modes of beams. The combination of basalt fibres comprising 25% of 12&#xa0;mm and 75% of 30&#xa0;mm lengths at a total volume content of 1.5% improved the moment-carrying capacity, ultimate deflection, and ductility of GFRP- FRC beams, showing superior performance when compared to non-fibrous reference beams and beams with fibres of single length. Raising the reinforcement ratio to more than 1.5 times the balanced reinforcement ratio improved both the ultimate load capacity and ultimate deflection of GFRP-FRC beams. While non-fibrous GFRP beams exhibited brittle failure, the GFRP-FRC beams with basalt fibres demonstrated ductile failure, showing pseudo-ductility. Ductility indices for all tested beams exceeded the minimum requirement of 4, and the ratios of span-to-service load deflection for all GFRP-FRC beams were notably higher than the commonly accepted benchmark of 250.</p>

错误：搜索内容不能为空，请输入英文关键词
错误：关键词超出字数限制，请精简
高级检索

Flexural and ductile characteristics of glass fibre reinforced polymer bar-reinforced concrete incorporating basalt fibres of varied lengths

  • 期刊论文

  • 发表日期：

    2025年8月13日

查看全文
  • Jisa Johnson,
  • S. Eswari

摘要

A study was initiated to develop a non-ferrous reinforcement system for concrete beams aimed at addressing the corrosion issues associated with traditional steel reinforcement. This approach combines Glass Fibre Reinforced Polymer (GFRP) bars and Fibre Reinforced Concrete (FRC). This study examines the flexural performance and ductility behaviour of basalt FRC beams reinforced with GFRP bars. Additionally, it explores the effectiveness of a U-wrap strengthening technique using GFRP fabric to enhance the strength of beams. Basalt fibres of two different lengths 12 mm and 30 mm are incorporated into the concrete matrix for elevating the concrete matrix’s attributes. The GFRP beams were examined utilising a four-point bending setup with an effective span of 900 mm, and the results report on strength, ductility and failure modes of beams. The combination of basalt fibres comprising 25% of 12 mm and 75% of 30 mm lengths at a total volume content of 1.5% improved the moment-carrying capacity, ultimate deflection, and ductility of GFRP- FRC beams, showing superior performance when compared to non-fibrous reference beams and beams with fibres of single length. Raising the reinforcement ratio to more than 1.5 times the balanced reinforcement ratio improved both the ultimate load capacity and ultimate deflection of GFRP-FRC beams. While non-fibrous GFRP beams exhibited brittle failure, the GFRP-FRC beams with basalt fibres demonstrated ductile failure, showing pseudo-ductility. Ductility indices for all tested beams exceeded the minimum requirement of 4, and the ratios of span-to-service load deflection for all GFRP-FRC beams were notably higher than the commonly accepted benchmark of 250.