| 摘要: |
| 采用波导法测定硅酸镁水泥的电磁性能，分析镁硅比和养护温度的影响，并基于微观测试结果进行机理分析.结果表明：提高养护温度可以显著增强硅酸镁水泥的早期强度；硅酸镁水泥的复介电常数实部随着镁硅比和养护温度的提高逐渐增大；提高养护温度使硅酸镁水泥的复介电常数虚部和损耗角正切值增大；与镁硅比相比，养护温度对硅酸镁水泥的透射率、反射率和吸收率的影响更为明显.微观测试结果显示含水量和孔结构对硅酸镁水泥的电磁性能有重要影响. |
| 关键词: 硅酸镁水泥 镁硅比 养护温度 电磁性能 |
| DOI：10.3969/j.issn.1007-9629.2024.02.006 |
| 分类号:TU525 |
| 基金项目:重庆市自然科学基金资助项目（CSTB2022NSCQ-MSX1250）；国家自然科学基金资助项目（52078015） |
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| Effects of Magnesium-Silicon Ratio and Curing Temperature on Electromagnetic Properties of Magnesium Silicate Cement |
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LI Yue1,2, LI Hongwen1,2, JIN Caiyun1,3, LIN Hui1,2, LUO Xiao1,2
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1.Chongqing Research Institute of Beijing University of Technology， Chongqing 401121，China;2.Faculty of Architecture， Civil and Transportation Engineering， Beijing University of Technology， Beijing 100124，China;3.Faculty of Science， Beijing University of Technology， Beijing 100124，China
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| Abstract: |
| The electromagnetic properties of magnesium silicate cement were measured by waveguide method. The effects of magnesium-silicon ratio and curing temperature were analyzed and then the mechanism was analyzed based on the microscopic test results. The results show that the early age strength of magnesium silicate cement paste could significantly be enhanced by increasing the curing temperature. The real part of the complex permittivity increases with the increase of magnesium-silicon ratio and curing temperature. The imaginary part of the complex permittivity and the tangent of the loss angle increase by improving curing temperature. To compare with magnesium-silicon ratio， the transmittance， reflectivity and absorptivity are more obviously affected by the curing temperature. The microscopic test results indicate that the water content and pore structure have an important influence on the electromagnetic properties of magnesium silicate cement paste. |
| Key words: magnesium silicate cement magnesium-silicon ratio curing temperature electromagnetic property |
