高铁粉煤灰建筑吸波材料研究  

Reseach on the building electromagnetic wave absorber mixing high-iron fly ash

作　　者：黄煜镔[1] 钱觉时[2] 张建业[2] 

机构地区：[1]重庆大学土木工程学院,重庆400045 [2]重庆大学材料科学与工程学院,重庆400045

出　　处：《煤炭学报》2010年第1期135-139,共5页Journal of China Coal Society

基　　金：国家自然科学基金资助项目(50702080)

摘　　要：对复合高铁粉煤灰水泥基材料的吸波性能进行了试验，结果表明：高铁粉煤灰颗粒是以介电损耗型为主的水泥基材料有效吸波剂，在民用建筑中具有实际使用价值；高铁粉煤灰水泥基材料具有明显的吸波性能，在9．5～18．0GHz范围内反射率R〈-5dB，其最小反射率超过-11dB；高铁粉煤灰颗粒电磁特性与磁性氧化铁组分的含量具有显著相关性，可以通过磁选技术以及钢渣取代部分粉煤灰的工艺措施提高高铁粉煤灰颗粒电磁损耗。The wave absorbing properties of cementitious materials blended with high-iron fly ash were studied experimentally. The results show that the high-iron fly ash particle is an effective electromagnetic wave absorber characterized by dielectric loss for cement based composite and can be used successfully in civil engineering. The reflectivity R for the composite materials is less than -5 dB in the range of 9.5 -18.0 GHz, while the minimum reflectivity is lower than - 11 dB. The electromagnetic characteristic of high-iron fly ash significantly correlates with the content of magnetic iron oxide. Therefore, electromagnetic loss of the high-iron fly ash can be enhanced through magnetic separation and steel slag partly incorporation.

关 键 词：高铁粉煤灰 建筑吸波材料 电磁参数 水泥基复合材料 

分 类 号：X751[环境科学与工程—环境工程]