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April 15, 2026MaterialsOpen Access

Performance and Fiber-Induced Modification Mechanisms of Geopolymer Recycled Aggregate Porous Concrete: Effects of Fiber Type and Content

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Authors

XBXinyu BaiTianjin UniversityYLYu LuoTianjin UniversityGZGan ZhengMinistry of Education of the People's Republic of China

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Overview

Experiment investigates fiber effects on properties of eco-friendly recycled concrete, suggesting design improvements.

Key Points

  • This research aims to evaluate how different fiber types and contents affect the properties of fiber-modified geopolymer recycled aggregate concrete.
  • Optimized geopolymer mix proportion through an orthogonal experiment.
  • Examined the effects of coir, basalt, and steel fibers at dosages of 0.25% and 0.5%.
  • Conducted laboratory experiments and scanning electron microscopy (SEM) analysis to assess properties.
  • Steel fibers at 0.25% increased compressive strength by about 25%.
  • 0.5% coir and basalt fibers reduced compressive strength by approximately 20.5% and 22.2%, respectively.
  • Coir and steel fibers at 0.25% enhanced effective porosity by 18.4% and 17.4%, respectively.
  • All fibers promoted more ductile-like failure modes, with coir fibers improving toughness the most.

Cite This Study

Bai et al. (2026) studied this question.

synapsesocial.com/papers/69df2ae6e4eeef8a2a6afe00https://doi.org/10.3390/ma19081544
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