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Reinforced concrete slabs are essential structural elements in building construction, bearing loads and distributing them to supporting components. Typically, slabs are reinforced with steel bars, but steel has a significant Drawback— its susceptibility to corrosion. Therefore, this study aims to compare the flexural performance of slabs reinforced with Glass Fiber Reinforced Polymer (GFRP) Bars and steel bars through experimental testing. The testing was conducted on reinforced concrete slab specimens measuring 1000 mm × 300 mm × 100 mm, using two specimens with GFRP Bars and two specimens with steel bars. Results indicate that GFRP-reinforced slabs exhibit lower cracking loads due to reduced stiffness but achieve higher average ultimate loads, 84.53 kN, than steel-reinforced slabs, 68.03 kN, demonstrating superior tensile strength. Despite this advantage, GFRP’s brittle, linear-elastic behavior results in lower ductility and greater mid-span deflections. Strain measurements confirm higher deformation in GFRP bars under load, aligning with their lower modulus of elasticity. Overall, GFRP shows promise as a corrosion-resistant alternative in reinforced concrete, provided that structural designs account for its limited ductility and stiffness.

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Flexural Performance of Concrete Slabs Reinforced with Glass Fiber Reinforced Polymer and Steel Bars

  • 会议论文

  • 发表日期：

    2026年

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  • Rafi Ubaidillah Rachman,
  • Anis Rosyidah,
  • Jonathan Saputra,
  • I Ketut Sucita,
  • Michael Andy

摘要

Reinforced concrete slabs are essential structural elements in building construction, bearing loads and distributing them to supporting components. Typically, slabs are reinforced with steel bars, but steel has a significant Drawback— its susceptibility to corrosion. Therefore, this study aims to compare the flexural performance of slabs reinforced with Glass Fiber Reinforced Polymer (GFRP) Bars and steel bars through experimental testing. The testing was conducted on reinforced concrete slab specimens measuring 1000 mm × 300 mm × 100 mm, using two specimens with GFRP Bars and two specimens with steel bars. Results indicate that GFRP-reinforced slabs exhibit lower cracking loads due to reduced stiffness but achieve higher average ultimate loads, 84.53 kN, than steel-reinforced slabs, 68.03 kN, demonstrating superior tensile strength. Despite this advantage, GFRP’s brittle, linear-elastic behavior results in lower ductility and greater mid-span deflections. Strain measurements confirm higher deformation in GFRP bars under load, aligning with their lower modulus of elasticity. Overall, GFRP shows promise as a corrosion-resistant alternative in reinforced concrete, provided that structural designs account for its limited ductility and stiffness.