Preparation and Properties of Scattering Electromagnetic Function Mortar Composite

Scattering electromagnetic function mortar composites was prepared by use of addition graphite into cement. The influence of graphite to mechanical properties and absorbing electromagnetic wave properties of cement mortar were researched. Electromagnetic characteristics of mortar composite was measured using the naval research laboratory(NRL) testing system. The results showed that graphite content had obvious effect on mechanical properties of mortar composite. Descended velocity of strengthen of compressive and flexural-tensile was farer when graphite content were bigger. In 2-18GHz frequency, reflectivity of composite was fluctuation at between -1.5 and -6.2dB when graphite content added from 15% to 22%. The matching ability of surface impedance and free space impedance could be improved and reflection loss of electromagnetic wave could be decreased by increasing graphite addition.