Scholarlink

<p>This study experimentally evaluated the long-term tensile performance of glass fiber-reinforced polymer (GFRP) bars exposed to real industrial wastewater at the Yazd Industrial Town treatment facility (Yazd, Iran) for up to 360 days. The wastewater exhibited an average pH and electrical conductivity (EC) of 7.85 and 4610 µmho/cm during the monitoring period, respectively. The experimental program involved twenty bare GFRP bars, each measuring 1280&#xa0;mm in length. Out of the total, eighteen samples were conditioned in industrial wastewater for up to 12 months at the ambient temperature (average of 25&#xa0;°C), 40&#xa0;°C, and 60&#xa0;°C to enable Arrhenius-based accelerated aging and long-term extrapolation. The remainders were kept in the laboratory conditions without exposure to serve as the control specimens. All samples were subjected to tensile testing until failure, and the results were evaluated based on their ultimate tensile strength, elastic modulus, and failure mechanisms. The findings revealed that the tensile strength and elastic modulus decreased by up to 6.1 and 9.1%, respectively, compared with the unconditioned control specimens, with more pronounced degradation at elevated temperatures. In addition, by using the Arrhenius-based predictive model, a long-term prediction of tensile strength retention was developed under the ambient condition. Overall, by combining real industrial wastewater exposure with Arrhenius-based modelling, this study extends earlier laboratory-based durability research toward more representative service conditions for GFRP-reinforced infrastructure.</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

Long-Term Tensile Properties of Bare Glass Fiber Bars Subjected to Industrial Wastewater Environment

  • 期刊论文

  • 发表日期：

    2026年2月23日

查看全文
  • Hamid Reza Shayegh,
  • Abolfazl Eslami,
  • Mohsen Ali Shayanfar,
  • Sajjad Mirvalad

摘要

This study experimentally evaluated the long-term tensile performance of glass fiber-reinforced polymer (GFRP) bars exposed to real industrial wastewater at the Yazd Industrial Town treatment facility (Yazd, Iran) for up to 360 days. The wastewater exhibited an average pH and electrical conductivity (EC) of 7.85 and 4610 µmho/cm during the monitoring period, respectively. The experimental program involved twenty bare GFRP bars, each measuring 1280 mm in length. Out of the total, eighteen samples were conditioned in industrial wastewater for up to 12 months at the ambient temperature (average of 25 °C), 40 °C, and 60 °C to enable Arrhenius-based accelerated aging and long-term extrapolation. The remainders were kept in the laboratory conditions without exposure to serve as the control specimens. All samples were subjected to tensile testing until failure, and the results were evaluated based on their ultimate tensile strength, elastic modulus, and failure mechanisms. The findings revealed that the tensile strength and elastic modulus decreased by up to 6.1 and 9.1%, respectively, compared with the unconditioned control specimens, with more pronounced degradation at elevated temperatures. In addition, by using the Arrhenius-based predictive model, a long-term prediction of tensile strength retention was developed under the ambient condition. Overall, by combining real industrial wastewater exposure with Arrhenius-based modelling, this study extends earlier laboratory-based durability research toward more representative service conditions for GFRP-reinforced infrastructure.