Patent ID: 8066813

Claim:
A method of making a cementitious composition comprising the steps of: (a) selecting at least one pozzolanic particulate material from at least one slag material, at least one siliceous rock, fly ash, and combinations thereof; (b) selecting at least one feldspar material and grinding it to a fineness of at least 3000 Blaine; (c) mixing a lime compound selected from calcium oxide and calcium hydroxide with gypsum; (d) mixing the ground material of step (b) with the mixture of step (c) to produce an activator mixture; (e) conditioning the pozzolanic particulate material of step (a) by mixing in gradual additions of an aqueous solution to produce a conditioned product; (f) adding the activator of step (d) to the conditioned product of step (e) and stirring the mixture to produce a slurry; and (g) curing the slurry of step (f) in a sealed container.