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<p>This study aims to evaluate the behavior of concrete reinforced with treated bamboo fiber (TBF) under sulfate exposure, determining its optimal dosage (0.5–2% by cement weight) to enhance mechanical properties and durability without altering the water/cement ratio. The methodology integrates advanced statistical analyses (ANOVA/Tukey) and a cost–benefit assessment. The fibers were cut to a length of 20&#xa0;mm with an approximate diameter of 2&#xa0;mm. Results showed that workability and density decreased as TBF content increased, while air content rose. After 28&#xa0;days of curing, the optimal dosage of 1.5% TBF significantly improved mechanical properties, with increases of: 20.61% in compressive strength, 9.81% in modulus of elasticity, 34.51% in flexural strength, and 31.20% in tensile strength. However, higher dosages (2% TBF) reduced mechanical performance—though not below control concrete levels. Regarding durability at 56&#xa0;days, mass loss due to sodium sulfate (Na<sub>2</sub>SO<sub>4</sub>) exposure increased by up to 72.71% with 2% TBF, yet all values remained within acceptable limits (&lt; 12%). This suggests that in high-salt or severe weathering environments, excessive TBF may compromise durability. Statistical analysis (ANOVA and Tukey tests, <i>p</i> &lt; 0.05) confirmed significant differences in all properties. The cost–benefit analysis revealed that 1.5% TBF is economically viable, costing S/400.42 Peruvian soles per m<sup>3</sup> while delivering a 31.20% tensile strength improvement. These findings demonstrate TBF’s potential as a sustainable reinforcement for structural and non-structural concrete, provided dosages are optimized and environmental conditions are accounted for.</p>

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Valorization of treated bamboo fiber in the mechanical strength and durability of concrete

  • 期刊论文

  • 发表日期：

    2025年5月8日

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  • Sandra Lorena Arcila Londoño,
  • Juan Martin Garcia Chumacero,
  • Luis Mariano Villegas Granados,
  • Carlos Arturo Damiani Lazo,
  • Guillermo Gustavo Arriola Carrasco,
  • Luigi Italo Villena Zapata,
  • Cesar Antonio Idrogo Perez

摘要

This study aims to evaluate the behavior of concrete reinforced with treated bamboo fiber (TBF) under sulfate exposure, determining its optimal dosage (0.5–2% by cement weight) to enhance mechanical properties and durability without altering the water/cement ratio. The methodology integrates advanced statistical analyses (ANOVA/Tukey) and a cost–benefit assessment. The fibers were cut to a length of 20 mm with an approximate diameter of 2 mm. Results showed that workability and density decreased as TBF content increased, while air content rose. After 28 days of curing, the optimal dosage of 1.5% TBF significantly improved mechanical properties, with increases of: 20.61% in compressive strength, 9.81% in modulus of elasticity, 34.51% in flexural strength, and 31.20% in tensile strength. However, higher dosages (2% TBF) reduced mechanical performance—though not below control concrete levels. Regarding durability at 56 days, mass loss due to sodium sulfate (Na2SO4) exposure increased by up to 72.71% with 2% TBF, yet all values remained within acceptable limits (< 12%). This suggests that in high-salt or severe weathering environments, excessive TBF may compromise durability. Statistical analysis (ANOVA and Tukey tests, p < 0.05) confirmed significant differences in all properties. The cost–benefit analysis revealed that 1.5% TBF is economically viable, costing S/400.42 Peruvian soles per m3 while delivering a 31.20% tensile strength improvement. These findings demonstrate TBF’s potential as a sustainable reinforcement for structural and non-structural concrete, provided dosages are optimized and environmental conditions are accounted for.