| 铁氧体粉掺量对水泥基材料吸波性能和力学性能的影响 |
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| 引用本文： | 张秀芝,孙伟,赵俊峰.铁氧体粉掺量对水泥基材料吸波性能和力学性能的影响[J].解放军理工大学学报,2011,0(5):466-471. |
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| 作者姓名： | 张秀芝 孙伟 赵俊峰 |
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| 作者单位： | 1. 济南大学 材料科学与工程学院，山东 济南 250022； 2.江苏省土木工程材料重点试验室，江苏 南京 211189 |
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| 基金项目： | 国家部委资助项目（A1420060186）. |
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| 摘 要： | 为了制备一种水泥基微波吸收材料,采用弓形反射法(NRL),以功率反射率作为表征材料吸波性能的指标,研究了8～18 GHz频率范围内,水泥基材料自身的吸波性能、锰锌铁氧体粉掺量对材料反射率的影响以及试样厚度与微波反射率之间的关系,同时对铁氧体粉掺量与砂浆强度的关系进行了研究.结果表明,掺加铁氧粉后砂浆的反射率降低；随着铁...
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| 关 键 词： | 铁氧体粉 水泥基材料 反射率 强度 |
| 收稿时间： | 2009-01-13 |
| 修稿时间： | 2009-01-13． |
Influence of ferrite on microwave absorbing properties of
cementitious composites |
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| ZHANG Xiu-zhi,SUN Wei and ZHAO Jun -feng.Influence of ferrite on microwave absorbing properties of
cementitious composites[J].Journal of PLA University of Science and Technology(Natural Science Edition),2011,0(5):466-471. |
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| Authors: | ZHANG Xiu-zhi SUN Wei and ZHAO Jun -feng |
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| Institution: | 1.School of Materials Science and Engineering, University of Ji′nan, Ji′nan 250022, China;
2.Jiangsu Key Laboratory of Construction Materials, Nanjing 211189, China |
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| Abstract: | The reflectivity of cementitious composites prepared with Mn Zn ferrite was measured by the Naval Research Laboratory (NRL) testing system in the frequency ranges from 8 to 18 GHz. The effects of the matrix and the absorber content of the ferrite and the thickness of the specimen on the absorption properties of the cement based composite were studied as well as the relation between the ferrite dosage and the mortar strength. The results show that the addition of the ferrite widens the absorption bandwidth and the optimal content of the ferrite is 30% mass fraction of the cement;that the reflectivity of the cementitious composite with 30% wt ferrite is -6～-10 dB;that the minimum reflectivity can reach -28.6 dB when the thickness of the specimen is 15 mm;and that the compressive strength and the flexure strength decrease with the increase of the ferrite dosage. |
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| Keywords: | ferrite cementitious composite reflectivity strength |
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