纳米氧化物对混凝土吸波性能的影响研究  

Effects Research of Nano-Oxide on Mechanical and Absorbing Properties of Concrete

作　　者：白二雷[1] 陈涛 张彤 王梦君 姜波 Bai Erlei;Chen Tao;Zhang Tong;Wang Mengjun;Jiang Bo(Aeronautics Engineering College,Air Force Engineering University,Xi'an City,Shaanxi Province 710038;Huanghe S&T College,Zhengzhou City,Henan Province 450063;Engineering Design Institute,Air Force Research Institute,Beijing 100068;Engineering Quality Supervision Station,Western War Zone Air Force,Chengdu City,Sichuan Province 610000;Construction Management Office,Office of Engineering Agent of Air Force Logistics Department,Beijing 100843)

机构地区：[1]空军工程大学航空工程学院,陕西西安710038 [2]黄河科技学院,河南郑州450063 [3]空军研究院工程设计研究所,北京100068 [4]西部战区空军工程质量监督站,四川成都610000 [5]空军后勤部工程代建办公室施工管理室,北京100843

出　　处：《黄河科技学院学报》2023年第11期59-65,共7页Journal of Huanghe S&T College

基　　金：国家自然科学基金项目(52278287);河南省省级土木工程一流专业建设点资助项目(ZLG202003);黄河科技学院博士科研启动基金项目(02032539)。

摘　　要：将分散良好的纳米SiO_(2)、纳米Fe_(2)O_(3)及纳米Al_(2)O_(3)颗粒作为吸波材料掺入混凝土中,制备了纳米SiO_(2)混凝土(NS)、纳米Fe_(2)O_(3)混凝土(NF)及纳米Al_(2)O_(3)混凝土(NA),采用弓形法扫频测量系统分别研究了纳米混凝土的吸波性能,结果表明:NF、NA在较低频率范围内雷达波反射率较小,在较高频率时雷达波反射率较大,而NS则反之,在一定频段内,复合掺入纳米Fe_(2)O_(3)及纳米SiO_(2)颗粒较之单独掺入,可显著降低混凝土的雷达波反射率;增大试件厚度可降低某些特定频段的混凝土雷达波反射率;在掺量为1%~5%时,混凝土的雷达波反射率随着纳米Fe_(2)O_(3)掺量的增大而降低。Nanoparticles of well-dispersed SiO_(2),Fe_(2)O_(3),and Al_(2)O_(3)were incorporated into concrete as absorbing materials.This resulted in the preparation of three different types of nanocomposite concrete:Nano SiO_(2)Concrete(NS),Nano Fe_(2)O_(3)Concrete(NF),and Nano Al_(2)O_(3)Concrete(NA).The microwave absorption properties of these nanocomposite concretes were studied individually using a bow-tie antenna-based frequency-scanning measurement system.The results indicate that the compressive and flexural strength of NF and NA are significantly improved as compared with plain concrete.NF and NA exhibit low reflectivity in the low frequency range while does in the opposite way in the high domain,however,NS is just the opposite.In some frequency rage,double mixing of nano-Fe_(2)O_(3)andnano-SiO_(2)in concrete can significantly reduce reflectivity that is superior to single mixing.Furthermore,an increase in specimen thickness can result in a significant decrease in reflectivity of concrete.In the mixing amount of 1%~5%,the reflectivity of concrete decrease with increase of the mixing amount of nano-Fe_(2)O_(3).

关 键 词：纳米混凝土 雷达波反射率 吸波性能 纳米氧化铝 纳米氧化铁 

分 类 号：TU597[建筑科学—建筑技术科学]