Patent ID: 6264735
Filing Date: 2001-07-24
Classification: C04B

Abstract:
A method of forming low lead-leaching foamed concrete, comprising the steps of:a) providing about 1 part Portland cement;b) providing about 0.001 part stabilizer by mass of the cement;c) dry mixing the Portland cement and the stabilizer thereby forming a dry mixture;d) providing a quantity of water and adding about 1 part crushed limestone by mass of the cement to form an aqueous mixture;e) mixing the dry mixture of step c) with the aqueous mixture of step d) thereby forming a slurry;f) adding about 0.05 part calcium phosphate by mass of the cement to the slurry;g) adjusting the density of the mixture obtained in step f) by adding an aqueous foam;h) mixing a quantity of a fiber to the mixture obtained in step g) until the fiber is distributed throughout the mixture;i) placing the final mixture obtained in step h) in a mold; andj) allowing the final mixture to harden and cure.