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The growing adoption of fiber-reinforced polymer (FRP) materials in structural engineering is driven by their desirable properties, including corrosion resistance and high strength-to-weight ratios. This study explores the flexural performance of concrete beams reinforced with different types of FRP, such as glass (GFRP), carbon (CFRP), aramid (AFRP), and basalt (BFRP). It aims to address gaps in current design guidelines, which primarily focus on GFRP, by investigating the performance of beams reinforced with various FRP types. To assess their behavior, full-scale experimental tests were conducted on five reinforced concrete beams under flexural loads. The results offer valuable insights into the flexural performance of concrete beams reinforced with a range of FRP laminates. FRP materials like BFRP, CFRP, GFRP, and AFRP showed strength improvements between 27% and 97% in AFRP when compared to the other FRP laminates. No debonding failures occurred, beam deflection was reduced by 5% to 15% compared to unstrengthened beams, and crack width decreased substantially, ranging from 9% to 34%.

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Experimental Investigation on the Flexural Behavior of RC Beams Strengthened with Different FRP Laminates

  • 会议论文

  • 发表日期：

    2026年

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  • B. Kranthi,
  • N. Pannirselvam,
  • S. Azhagarsamy

摘要

The growing adoption of fiber-reinforced polymer (FRP) materials in structural engineering is driven by their desirable properties, including corrosion resistance and high strength-to-weight ratios. This study explores the flexural performance of concrete beams reinforced with different types of FRP, such as glass (GFRP), carbon (CFRP), aramid (AFRP), and basalt (BFRP). It aims to address gaps in current design guidelines, which primarily focus on GFRP, by investigating the performance of beams reinforced with various FRP types. To assess their behavior, full-scale experimental tests were conducted on five reinforced concrete beams under flexural loads. The results offer valuable insights into the flexural performance of concrete beams reinforced with a range of FRP laminates. FRP materials like BFRP, CFRP, GFRP, and AFRP showed strength improvements between 27% and 97% in AFRP when compared to the other FRP laminates. No debonding failures occurred, beam deflection was reduced by 5% to 15% compared to unstrengthened beams, and crack width decreased substantially, ranging from 9% to 34%.