Analysis of shielding effectiveness of cement composites filled with pyrolyzed biochar

Shielding against electromagnetic interference (EMI) is a crucial point in aerospace industry and for civil applications. In recent years, the mechanical and electrical properties of composites materials filled with carbon nanotubes or graphene have been analysed with the aim of substituting to standard metal structures used for electromagnetic shielding. In this work, an eco-friendly material as biochar obtained from biomass pyrolysis is used as filler in cement and the shielding properties of the composite in X-band are analysed.