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US 4,058,407 AGranted
Hydraulic cement mixes and process for improving hydraulic cement mixes
AssigneeMartin Marietta Corporation
InventorJames A. Ray
Life of this patent
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AssigneeMartin Marietta Corporation
InventorJames A. Ray
Estimating the term…
A hydraulic cement mix including hydraulic cement, such as Portland type or high alumina cement, aggregate, sufficient water to effect hydraulic setting of the cement, and an additive comprising the fruit of the carob tree, Ceratonia siliqua, wherein the additive is present in an amount sufficient to increase the compressive strength of the mix when hardened. The additive may take many forms, but is preferably selected from the group comprising raw or roasted, carob pods or beans, extracts of the pods or beans, or combinations thereof and is present in an amount of up to about 0.25% based upon the weight of the cement, preferably between about 0.1% by weight and 0.1% by weight based upon the weight of the cement, with between 0.01% by weight and 0.05% by weight based upon the weight of the cement being an additional preferred range.
A hydraulic cement mix including hydraulic cement, aggregate, sufficient water to effect hydraulic setting of the cement, and an additive comprising pods, with or without the beans, of the carob tree, Ceratonia Siliqua, extracts of said pods, with or without beans, or combinations thereof, said additive being present in an amount of up to about 0.25% by weight based upon the weight of the cement to thereby increase the strength of the mix when hardened.
A process for increasing the strength of hydraulic cement mixes comprising incorporating in a hydraulic cement mix, including a hydraulic cement, aggregate and sufficient water to effect hydraulic setting of said cement, an additive comprising pods, with or without the beans, of the carob tree, Ceratonia Siliqua, extracts of said pods, with or without beans, or combinations thereof, and being present in an amount of up to about 0.25% by weight based upon the weight of the cement to thereby increase the strength of the mix when hardened.
A hydraulic cement mix including hydraulic cement, aggregate in an amount within the range of 0% to about 80% by weight based upon the total weight of the dry cement and aggregate, and an additive comprising pods, with or without the beans, of the carob tree, Ceratonia Siliqua, extracts of said pods, with or without the beans, or combinations thereof, said additive being present in an amount of up to about 0.25% by weight based upon the weight of the cement to thereby increase the strength of the mix when hardened.
A hydraulic cement mix as claimed in claim 31 wherein said extracts are selected from the group consisting of aqueous extracts and are made by mixing an aqueous solvent, selected from the group consisting of water, acids and bases, and raw or roasted carob pods, with or without beans, or combinations thereof, and separating the insoluble residue from the aqueous extract.
Dependencies are inferred from the claim text.