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The rapid growth of cities, particularly in developing regions, is driving a significant increase in concrete demand. However, concrete production is a major environmental concern, releasing high levels of carbon dioxide (CO2) due to its dependence on cement. This study investigates the use of class-F fly ash as a partial replacement for cement in self-compacting concrete (SCC) to reduce its environmental impact. Life cycle assessment (LCA) is employed to measure the embodied energy (EE) and global warming potential (GWP) of various fiber-reinforced SCC mixes containing different fly ash replacement ratios. The results emphasize the importance of optimizing the amount of fly ash to achieve a balance between desired mechanical performance and minimized environmental burdens. While the study explores the influence of fiber types, the key finding is that incorporating class-F fly ash demonstrably reduces both GWP and EE in SCC. In conclusion, this study highlights the potential of fly ash as a sustainable alternative in SCC production, promoting eco-friendly construction practices without compromising performance.

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Environmental Assessment of Fiber-Reinforced Self-Compacting Concrete Containing Class-F Fly Ash

  • 会议论文

  • 出版模式：

    开放获取

  • 发表日期：

    2025年

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  • Behnoosh Khataei,
  • Masoud Ahmadi,
  • Mahdi Kioumarsi

摘要

The rapid growth of cities, particularly in developing regions, is driving a significant increase in concrete demand. However, concrete production is a major environmental concern, releasing high levels of carbon dioxide (CO2) due to its dependence on cement. This study investigates the use of class-F fly ash as a partial replacement for cement in self-compacting concrete (SCC) to reduce its environmental impact. Life cycle assessment (LCA) is employed to measure the embodied energy (EE) and global warming potential (GWP) of various fiber-reinforced SCC mixes containing different fly ash replacement ratios. The results emphasize the importance of optimizing the amount of fly ash to achieve a balance between desired mechanical performance and minimized environmental burdens. While the study explores the influence of fiber types, the key finding is that incorporating class-F fly ash demonstrably reduces both GWP and EE in SCC. In conclusion, this study highlights the potential of fly ash as a sustainable alternative in SCC production, promoting eco-friendly construction practices without compromising performance.