Abstract
Electromagnetic (EM) wave (EMW) shielding/absorbing concrete refers to the concrete with EMW defense capacity in a wide frequency region. The EMW shielding can be achieved by incorporating electrically conductive fillers into conventional concrete, and its mechanism is reflection. The EMW adsorbing can be implemented by the addition of magnetic loss, dielectric loss, and resistive loss fillers, and it results from energy conversion and dissipation of EM energy. Development of EMW shielding/absorbing concrete has become urgent since such issues as EM pollution, EM interference, information security, and military security are becoming more and more pressing. The EMW shielding/absorbing concrete has wide potential application in such fields as EM radiation protection of urban civilian infrastructures, and stealth and defense of military installations.
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