abstract |
This specification is directed to a lightweight hydraulic cement, to the use of lightweight slurries formed by combining this lightweight cement with water, and to lightweight concrete formed by the setting of the slurries. The lightweight hydraulic cement is comprised of hydraulic cement, anhydrous sodium metasilicate, and hollow sealed spheres; a lightweight slurry is formed by mixing the lightweight cement with water and the slurry is used for treating wells that penetrate the earth. This lightweight slurry may also be used for forming lightweight concrete which in turn is useful for such things as building material. |