Calcium silicate brick development

Claim 1

A BRICK PRODUCT MANUFACTURED FROM A MIXTURE OF 10 TO 15% BY WEIGHT OF WATER AND 85 TO 90% BY WEIGHT OF DRY INGREDIENTS COMPRISING BY WEIGHT 5 TO 6.5% OF CALCIUM HYDROXIDE, 2 TO 5% OF PORTLAND CEMENT, THE TOTAL CONTENT OF CALCIUM HYDROXIDE AND CEMENT BEING NOT LESS THAN 8.5%, 10 TO 25% OF RECYCLED, HARDENED PRODUCT IN THE FORM OF SYNTHETIC TOBERMORITE COMPOUNDED FROM A MIXTURE OF LIME, SILICA AND WATER, SHAPED AND THEN HARDENED IN AN AUTOCLAVE REGIME AND CRUSHED TO A SIZE OF LESS THAN 1/4 INCH AND THE REMAINDER CRUSHED SILICEOUS MATERIAL WITH AN FM SIZING OF FINER THAN 185 CONTAINING NOT LESS THAN 65% SILICA, WITH IN THE ORDER OF 5% TO 20% OF THE DRY INGREDIENTS BEING GROUND SILICEOUS MATERIAL CONTAINING AT LEAST 98% AVAILABLE SILICA AND GROUND TO 100% PASS A 150 MESH SCREEN, THE MIXTURE BEING SHAPED AND CURED TO FORM A HARDENED BRICK PRODUCT OF FINE TEXTURE, HIGH IMPACT RESISTANCE, SUPERIOR HARDNESS AND EXCELLENT ACID RESISTANCE.