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<p>The study focuses on the thermophysical, hygric, and mechanical properties of eco-friendly insulation materials based on epoxy composites made with date palm, alfa, and reed fibers suitable for constructing buildings in Morocco under local climatic conditions. Comparative experiments were carried out on samples having a fiber/resin ratio of 50:50. The study found the value of thermal conductivity to be in the range of 0.069 to 0.135&#xa0;W/m.K, which proves a relatively good insulating quality comparable to conventional materials. The capillary water absorption was 12.13% to 47.95%. Mechanical tests revealed the value of compressive strength from 80.3&#xa0;MPa to 130.4&#xa0;MPa. In terms of energy analysis, the optimal thickness of insulation materials was found to be in the range of 0.03–0.07&#xa0;m with energy savings of 45.93 to 57.43 $/m², with a payback period of 2 to 2.31 years. This study addresses the lack of coupled thermo-hygro-mechanical analysis and thermo-economic optimization of bio-based composites under arid climatic conditions.</p>

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Sustainable insulation materials from natural fibers: experimental insights and optimization for energy-efficient buildings

  • 期刊论文

  • 发表日期：

    2026年7月3日

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  • Amine Tilioua,
  • Abderrahim Benallel,
  • Youssef Khrissi

摘要

The study focuses on the thermophysical, hygric, and mechanical properties of eco-friendly insulation materials based on epoxy composites made with date palm, alfa, and reed fibers suitable for constructing buildings in Morocco under local climatic conditions. Comparative experiments were carried out on samples having a fiber/resin ratio of 50:50. The study found the value of thermal conductivity to be in the range of 0.069 to 0.135 W/m.K, which proves a relatively good insulating quality comparable to conventional materials. The capillary water absorption was 12.13% to 47.95%. Mechanical tests revealed the value of compressive strength from 80.3 MPa to 130.4 MPa. In terms of energy analysis, the optimal thickness of insulation materials was found to be in the range of 0.03–0.07 m with energy savings of 45.93 to 57.43 $/m², with a payback period of 2 to 2.31 years. This study addresses the lack of coupled thermo-hygro-mechanical analysis and thermo-economic optimization of bio-based composites under arid climatic conditions.