Abstract
The electric resistance and thermoelectric properties of cement composites with addition of expanded graphite were. The expanded graphite was obtained from intercalated graphite by rapid heating in different conditions. The influence of thermal treatment on thermoelectric properties was measured. The cement pastes were prepared in the two different ways, either by mixing together expanded graphite and cement, or by rubbing compounds together in order to obtain smaller particles of graphite (even nanometric size) during mixing. The bulk density and electric and thermoelectric properties of cement pastes with addition of expanded graphite were measured. The results of investigations show that the electric properties of composites are strongly influenced by the conditions of thermal expansion as well as by the technique of preparation.
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