Patent ID: 8617309

Claim:
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 (âˆ’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: 0.5 wt %-32.3. wt % resilient graphitic carbon; 5.2 wt %-71.0 wt % coarse aggregate; 0 wt %-88.6 wt % fine aggregate; and 15.7 wt %-23.2 wt % cement.