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<p>This study developed a novel foam cement-based composite reinforced with glass powder (GP) and carbon fiber (CF) using a chemical foaming method. Through a systematic investigation of the GP and CF ratios, a synergistic effect was observed in terms of microstructural refinement and enhancement of electromagnetic properties. The incorporation of GP and CF resulted in a notable improvement in pore structure, with the majority of pores ranging in size from 0.1 to 0.15&#xa0;mm, and the average pore diameter decreasing to 0.18&#xa0;mm. The porosity of the sample with 30 wt.% GP reached 65%. The addition of 0.4 wt.% CF improved the mechanical properties, with compressive and flexural strength increasing by 54.44% and 52.86%, reaching 3.83&#xa0;MPa and 2.14&#xa0;MPa, respectively. Analysis of electromagnetic properties indicated that GP enhanced impedance matching through interfacial polarization. The composite demonstrated superior performance with a reflection loss (RL) peak of − 49.18&#xa0;dB and an effective absorption bandwidth (EAB) of 5.02&#xa0;GHz within the 8–12&#xa0;GHz frequency range.</p>

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Glass powder and carbon fiber-reinforced foam cement matrix composites electromagnetic characterization

  • 期刊论文

  • 发表日期：

    2025年8月21日

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  • Ying-hua Bai,
  • Hao Xin

摘要

This study developed a novel foam cement-based composite reinforced with glass powder (GP) and carbon fiber (CF) using a chemical foaming method. Through a systematic investigation of the GP and CF ratios, a synergistic effect was observed in terms of microstructural refinement and enhancement of electromagnetic properties. The incorporation of GP and CF resulted in a notable improvement in pore structure, with the majority of pores ranging in size from 0.1 to 0.15 mm, and the average pore diameter decreasing to 0.18 mm. The porosity of the sample with 30 wt.% GP reached 65%. The addition of 0.4 wt.% CF improved the mechanical properties, with compressive and flexural strength increasing by 54.44% and 52.86%, reaching 3.83 MPa and 2.14 MPa, respectively. Analysis of electromagnetic properties indicated that GP enhanced impedance matching through interfacial polarization. The composite demonstrated superior performance with a reflection loss (RL) peak of − 49.18 dB and an effective absorption bandwidth (EAB) of 5.02 GHz within the 8–12 GHz frequency range.