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<p>The influence mechanism of MgO particle fineness on the properties of MOC was comprehensively explored through means of grinding, sieving, hydration and apparent density testing, in conjunction with characterization methods such as setting time, stability, compressive strength, and microscopic morphology. The findings reveal that MOC demonstrates excellent stability and mechanical properties when the particle fineness of MgO is less than 75 µm. When the MgO particle fineness exceeds 75 µm, MOC exhibits superior fluidity and maneuverability. When 0.75 µm MgO is employed as the raw material to prepare MOC, a water-cement ratio of 0.6 proves more favorable. These results can furnish a theoretical foundation for the preparation and application of MOC.</p>

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Effect of Particle Fineness of Magnesium Oxide on Properties of Magnesium Oxychloride Cement

  • 期刊论文

  • 发表日期：

    2026年4月11日

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  • Baolan Li,
  • Weixin Zheng,
  • Yihuang Li

摘要

The influence mechanism of MgO particle fineness on the properties of MOC was comprehensively explored through means of grinding, sieving, hydration and apparent density testing, in conjunction with characterization methods such as setting time, stability, compressive strength, and microscopic morphology. The findings reveal that MOC demonstrates excellent stability and mechanical properties when the particle fineness of MgO is less than 75 µm. When the MgO particle fineness exceeds 75 µm, MOC exhibits superior fluidity and maneuverability. When 0.75 µm MgO is employed as the raw material to prepare MOC, a water-cement ratio of 0.6 proves more favorable. These results can furnish a theoretical foundation for the preparation and application of MOC.