Admixture for nonplastic cement mixes and method
Patent 4488910 Issued on December 18, 1984. Estimated Expiration Date: 
November 16, 2003. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.
November 16, 2003. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.Patent References 3090692 3885985 Method for producing a storable mortar Non-plastic hydraulic cement mixes and process for improving such mixes Very high early strength cement Patent #: 4286992 InventorsAssigneeApplicationNo. 06/552528 filed on 11/16/1983US Classes:106/665, With other organic material106/696Organic material containingExaminersPrimary: Poer, JamesAttorney, Agent or FirmInternational ClassesC04B 24/00 (20060101)C04B 28/00 (20060101) C04B 24/08 (20060101) C04B 24/12 (20060101) C04B 28/04 (20060101) AbstractA hydraulic cement mix including hydraulic cement, aggregate, sufficient water to effect hydraulic setting of the cement, and an admixture comprising a mixture selected from an olefin sulfonate, an alkylarylsulfonate, an alkyloamide, an ethoxylated fatty amine, an alkanolamine, and a hydrolyzed starch having a dextrose equivalent value in the range of commercial corn syrups, the admixture being present in an amount sufficient to increase the compressive strength of nonplastic cementitious mixes such as those used in making masonry units, pipe and the like. Generally, the additive is present in an amount between 0.005 and 0.5 weight percent based on weight of cement. | |
