Patent ID: 7438757
Filing Date: 2008-10-21
Classification: B28B,C04B,E04B,Y02W,Y10S

Abstract:
1. A concrete block comprising a mixture of reclaimed spent abrasive particles, Portland cement, a natural aggregate filler which is different than the spent abrasive, and water, said mixture having the approximate composition by weight of 10 to 15% of Portland cement, 65 to 80% of the natural aggregate, 5 to 10% water, and 8 to 15% of the abrasive particles, wherein the majority of the abrasive particles have a particle size of 50 mesh or smaller; and the abrasive particles are thermoset particulate media selected from the group consisting of urea formaldehyde, cast acrylic, melamine formaldehyde, phenol formaldehyde, polyester, epoxy and polyurethane.