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<p>Asbestos has been associated with severe health risks, including asbestosis, mesothelioma, and lung cancer, raising major public health concerns. This study explores a sustainable alternative by developing marble-rice husk ceiling boards (MRCB) from rice husk and marble dust, using polystyrene glue derived from waste polystyrene dissolved in premium motor gasoline as a bonding agent. The samples were evaluated for water absorption, fire resistance, nail pull-out strength, and microstructural properties in accordance with the American Society for Testing and Materials (ASTM) and British standards. Among the formulations, MRCB-02, composed of 40% polystyrene glue, 30% rice husk, and 30% marble dust, exhibited the lowest water absorption of 19.86% and maintained structural integrity after 60&#xa0;min of immersion. The microstructural analysis confirmed uniform material distribution, enhancing mechanical stability. All samples demonstrated strong nail pull-out resistance, while fire resistance tests showed durability against a 20-minute fire exposure, providing crucial evacuation time during fire incidents. These findings highlight MRCB-02 as a promising eco-friendly alternative to asbestos ceiling boards, offering improved safety, durability, and sustainability.</p>

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Sustainable replacement of asbestos ceiling boards with boards produced from rice husk-marble dust-polystyrene matrix

  • 期刊论文

  • 出版模式：

    开放获取

  • 发表日期：

    2025年8月6日

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  • Abdulganiyu Sanusi,
  • Emmanuel Eberechukwu Ndububa,
  • Adekunle Akanni Adeleke,
  • Edwin Reuben Ade,
  • Ifeyinwa Ijeoma Obianyo,
  • Idris Mohammed,
  • Olaolu Oyinlola Bilewu

摘要

Asbestos has been associated with severe health risks, including asbestosis, mesothelioma, and lung cancer, raising major public health concerns. This study explores a sustainable alternative by developing marble-rice husk ceiling boards (MRCB) from rice husk and marble dust, using polystyrene glue derived from waste polystyrene dissolved in premium motor gasoline as a bonding agent. The samples were evaluated for water absorption, fire resistance, nail pull-out strength, and microstructural properties in accordance with the American Society for Testing and Materials (ASTM) and British standards. Among the formulations, MRCB-02, composed of 40% polystyrene glue, 30% rice husk, and 30% marble dust, exhibited the lowest water absorption of 19.86% and maintained structural integrity after 60 min of immersion. The microstructural analysis confirmed uniform material distribution, enhancing mechanical stability. All samples demonstrated strong nail pull-out resistance, while fire resistance tests showed durability against a 20-minute fire exposure, providing crucial evacuation time during fire incidents. These findings highlight MRCB-02 as a promising eco-friendly alternative to asbestos ceiling boards, offering improved safety, durability, and sustainability.