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<p>Driven by the dual demands of industrial solid waste utilization and building energy conservation, a rubber-particle gypsum wall composite material (RPGWCM) was developed. To overcome the limitations of this composite in terms of mechanical strength, thermal conductivity, and water resistance, glass fibers and basalt fibers were used to improve its performance. Experimental investigations were conducted to evaluate the effects of different fiber contents (0, 0.4, 0.8, 1.2, 1.6, and 2.0%) on the mechanical, water resistance, and thermal properties of RPGWCMs. The microstructural features were further characterized by scanning electron microscopy (SEM) to elucidate the synergistic reinforcement mechanisms of the fibers. The results indicate that when the glass fiber content was 1.2%, the flexural strength of the RPGWCM increased by 33.1% compared with that of the reference, whereas the thermal conductivity decreased to 0.277&#xa0;W/(m&#xa0;K), indicating a more distinct improvement in both mechanical and thermal performance than basalt fiber. In contrast, basalt fibers exhibited more balanced performance optimization at a concentration of 0.8%, where the apparent density increased by only 0.7%, the compressive strength increased by 14.7% relative to that of the fiber-free sample, the water absorption remained at 17.8%, and the softening coefficient increased to 0.51, indicating favorable water resistance.</p>

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Performance Study of Rubber-Particle Gypsum Wall Composites Modified with Glass and Basalt Fibers

  • 期刊论文

  • 发表日期：

    2026年4月18日

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  • Kaiwen Wang,
  • Kang Chen,
  • Liwei Zhou,
  • Chun’ao Li,
  • Yushan Wang,
  • Lu Liang

摘要

Driven by the dual demands of industrial solid waste utilization and building energy conservation, a rubber-particle gypsum wall composite material (RPGWCM) was developed. To overcome the limitations of this composite in terms of mechanical strength, thermal conductivity, and water resistance, glass fibers and basalt fibers were used to improve its performance. Experimental investigations were conducted to evaluate the effects of different fiber contents (0, 0.4, 0.8, 1.2, 1.6, and 2.0%) on the mechanical, water resistance, and thermal properties of RPGWCMs. The microstructural features were further characterized by scanning electron microscopy (SEM) to elucidate the synergistic reinforcement mechanisms of the fibers. The results indicate that when the glass fiber content was 1.2%, the flexural strength of the RPGWCM increased by 33.1% compared with that of the reference, whereas the thermal conductivity decreased to 0.277 W/(m K), indicating a more distinct improvement in both mechanical and thermal performance than basalt fiber. In contrast, basalt fibers exhibited more balanced performance optimization at a concentration of 0.8%, where the apparent density increased by only 0.7%, the compressive strength increased by 14.7% relative to that of the fiber-free sample, the water absorption remained at 17.8%, and the softening coefficient increased to 0.51, indicating favorable water resistance.