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AssigneeSuperior Graphite Co.
InventorsPeter Roy Carney, Craig Allen Baer, David J. Derwin, Changjun Zhou, Frank A. Wawrzos, Marcin Tlustochowicz
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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. “Resilient” is intended to describe graphitic carbon particles that exhibit a rebound of at least about 20% after compression to 10,000 psi.
A concrete composition comprising a fine fraction that is partially or entirely resilient graphitic carbon particles having a mesh size of less than about 8 mesh (−2.38 mm) and exhibiting a rebound of at least about 20% after compression to 10,000 psi, wherein the resilient graphitic carbon particles are selected from synthetic graphite, thermally treated calcined petroleum coke, and a combination synthetic graphite and thermally treated calcined petroleum coke, the concrete composition further comprising:
A concrete composition comprising a fine fraction that is partially or entirely resilient graphitic carbon particles having a mesh size of less than about 8 mesh (−2.38 mm) and exhibiting a rebound of at least about 20% after compression to 10,000 psi, wherein the resilient graphitic carbon particles are selected from synthetic graphite, thermally treated calcined petroleum coke, and a combination synthetic graphite and thermally treated calcined petroleum coke, the concrete composition further comprising:
Dependencies are inferred from the claim text.