Cementitious material and method of preparation thereof

Claim 1

THE METHOD OF PREPARING A HYDRAULIC CEMENT WITHOUT REQUIRING CLINKERING OF THE COMPONENTS WHICH COMPRISES ATTRITION GRINDING IN THE DRY STATE AND IN THE PRESENCE OF EACH OTHER A MIXTURE CONTAINING AS ESSENTIAL INGREDIENTS (A) FROM ABOUT 5 TO 75 PERCENT BY WEIGHT OF UNREACH CALCIUM OXIDE, AND (B) FROM 95 TO 25 PERCENT OF A REACTANT FOR SAID CALCIUM OXIDE COMPOSED ESSENTIALLY OF A MIXTURE OF SILICON DIOXIDE AND ALUMINUM OXIDES, THE REACTIVE NONOVOLATILE SOLIDS OF SAID MIXTURE BEING COMPOSED OF AT LEAST 80 PERCENT BY WEIGHT OF SAID (A) AND (B), AND CONTINUING SUCH GRINDING UNTIL AT LEAST 50 PERCENT BY WEIGHT OF SUCH CALCIUM OXIDE HAS REACTED DUE TO THE GRIDING AS DETERMINED BY THE IMMEDIATE HEAT OF HYDRATION OF SAID GROUND MIXTURE, THE HYDRAULIC CEMENTITIOUS PROPERTIES OF SAID GROUND MIXTURE BEING SUBSTANTIALLY ENTIRELY IMPARTED BY SAID GRINDING OF SAID (A) AND (B).

Claim 2

THE METHOD OF PREPARING A HYDRAULIC CEMENT WITHOUT REQUIRING CLINKERING OF THE COMPONENTS WHICH COMPRISES ATTRITION GRINDING IN THE DRY STATE AND IN THE PRESENCE OF EACH OTHER A MIXTURE CONTAINING AS ESSENTIAL INGREDIENTS (A) FROM ABOUT 5 TO 75 PERCENT BY WEIGHT OF UNREACH CALCIUM OXIDE, AND (B) FROM 95 TO 25 PERCENT OF A REACTANT FOR SAID CALCIUM OXIDE COMPOSED ESSENTIALLY OF A MIXTURE OF SILICON DIOXIDE AND ALUMINUM OXIDES, THE REACTIVE NONOVOLATILE SOLIDS OF SAID MIXTURE BEING COMPOSED OF AT LEAST 80 PERCENT BY WEIGHT OF SAID (A) AND (B), AND CONTINUING SUCH GRINDING UNTIL AT LEAST 50 PERCENT BY WEIGHT OF SUCH CALCIUM OXIDE HAS REACTED DUE TO THE GRIDING AS DETERMINED BY THE IMMEDIATE HEAT OF HYDRATION OF SAID GROUND MIXTURE, THE HYDRAULIC CEMENTITIOUS PROPERTIES OF SAID GROUND MIXTURE BEING SUBSTANTIALLY ENTIRELY IMPARTED BY SAID GRINDING OF SAID (A) AND (B).