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<p>The construction and transportation industries are now developing a wide range of products incorporating glass fiber-reinforced polymer (GFRP). Such products consist of strengthening sheets, strengthening strips, structural profiles, sections, sandwich panels, reinforcing bars, and piping. In engineering applications, GFRP materials come out to be an exceptional alternative because of their wide range of characteristics, such as high stiffness, light weight, corrosion resistance, high strength, high-temperature wear, etc. However, the non-reprocessing of GFRP results in critical waste management issues for the composite industry. With a zero-scrap value, GFRP waste is either incinerated or dumped in the landfills, raising environmental concerns. This research study explored the influence of length and dosage of GFRP waste on flexural, compressive, and impact resistance properties of concrete. Tests were carried out on concrete mixes by incorporating 2, 3, and 4 cm GFRP fibers with dosages of 0.25, 0.5, 0.75, and 1 percent of total concrete weight. The findings showed that slump and compressive strength were not improved by GFRP fiber additions in comparison to the control concrete mix. However, the flexural strength was observed to enhance by 10.6% with 1% incorporation of 4 cm GFRP fibers. Furthermore, with an increase in dosage and length of GFRP fibers, concrete mixes showed significant improvement in impact resistance. While the addition of GFRP fibers has been observed to negatively impact the slump and compressive properties of concrete, it appears feasible to incorporate the long GFRP fibers in concrete. This is especially applicable in non-structural uses such as impact resistant barriers, pavement slabs or architectural concrete as the importance of good mechanical properties is relatively less in non-structural uses. Consequently, favourably influencing the creation of waste management techniques that are more sustainable. The proposed approach does not require any special pre-treatment of the GFRP waste or modification to standard mixing and compaction methods, making it readily transferable to practical field conditions.</p>

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Mechanical characterization and impact resistance of concrete incorporating recycled thin-walled hollow tubular GFRP sections

  • 期刊论文

  • 发表日期：

    2025年11月26日

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  • Muhammad Rizwan Riaz,
  • Muhammad Moeed Azhar,
  • Muhammad Fahad Ejaz,
  • Rizwan Azam,
  • Muhammad Faraz Javaid

摘要

The construction and transportation industries are now developing a wide range of products incorporating glass fiber-reinforced polymer (GFRP). Such products consist of strengthening sheets, strengthening strips, structural profiles, sections, sandwich panels, reinforcing bars, and piping. In engineering applications, GFRP materials come out to be an exceptional alternative because of their wide range of characteristics, such as high stiffness, light weight, corrosion resistance, high strength, high-temperature wear, etc. However, the non-reprocessing of GFRP results in critical waste management issues for the composite industry. With a zero-scrap value, GFRP waste is either incinerated or dumped in the landfills, raising environmental concerns. This research study explored the influence of length and dosage of GFRP waste on flexural, compressive, and impact resistance properties of concrete. Tests were carried out on concrete mixes by incorporating 2, 3, and 4 cm GFRP fibers with dosages of 0.25, 0.5, 0.75, and 1 percent of total concrete weight. The findings showed that slump and compressive strength were not improved by GFRP fiber additions in comparison to the control concrete mix. However, the flexural strength was observed to enhance by 10.6% with 1% incorporation of 4 cm GFRP fibers. Furthermore, with an increase in dosage and length of GFRP fibers, concrete mixes showed significant improvement in impact resistance. While the addition of GFRP fibers has been observed to negatively impact the slump and compressive properties of concrete, it appears feasible to incorporate the long GFRP fibers in concrete. This is especially applicable in non-structural uses such as impact resistant barriers, pavement slabs or architectural concrete as the importance of good mechanical properties is relatively less in non-structural uses. Consequently, favourably influencing the creation of waste management techniques that are more sustainable. The proposed approach does not require any special pre-treatment of the GFRP waste or modification to standard mixing and compaction methods, making it readily transferable to practical field conditions.