Superior Graphite Company

Craig Allen Baer

David J Derwin

Frank A Wawrzos

Changjun Zhou

Peter Roy Carney

Marcin Tlustochowicz

A method for improving the thermal characteristics of cement compositions is provided in which fine resilient graphitic carbon particles ('RGC') are substituted for a portion of the fine aggregate (typically sand) in the cement formulation. For the purposes of the present disclosure, 'fine' is intended to describe particulates having a mesh size of less than about 8 mesh, or a particle size of less than about 2.38 mm, or, more preferably when referring to RGC, a mesh size of less than about 16 mesh and a particle size of less than about 1.19 mm. &#x201c;Resilient&#x201d; is intended to describe graphitic carbon particles that exhibit a rebound of at least about 20% after compression to 10,000 psi.

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Romeoville, IL, United States of America

Craig Allen Baer