Open AccessStudy on mechanism of electromagnetic shielding effectiveness of carbon nanofibers reinforced cement concrete
Author(s) -
Hengbo Zhang,
Jiaxiong Xu,
Han Wang,
Liangxue Nie
Publication year - 2020
Publication title -
iop conference series. earth and environmental science
Language(s) - English
Resource type - Journals
eISSN - 1755-1307
pISSN - 1755-1315
DOI - 10.1088/1755-1315/510/5/052034
Subject(s) - electromagnetic shielding , cement , materials science , carbon nanofiber , composite material , electromagnetic radiation , nanofiber , carbon fibers , carbon nanotube , composite number , optics , physics
In this paper, five groups of cement concrete specimens reinforced by carbon nanofibers (CNFs) were prepared with different fiber content of 0%, 0.1%, 0.2%, 0.3% and 0.5%, the electromagnetic shielding effectiveness ( SE ) and the mechanism of shielding were analyzed. The results show that, when the frequency of electromagnetic wave is higher than 2 GHz, with the increase of frequency, the improvement gradually increases; When the frequency is 18 GHz, the SE reaches the maximum; CNFs can improve the SE of concrete material by improving its conductivity and the loss of electromagnetic wave.