Admixture and method for freeze-thaw damage resistance and scaling damage resistance of cementitious compositions
AssigneeConstruction Research & Technology GmbH
InventorsFrank Shaode Ong, James C. Smith, Raymond Fete, Rick Paponetti
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Abstract
A freeze-thaw damage resistance and scaling damage resistance admixture for a cementitious composition including an aqueous slurry comprising a water insoluble superabsorbent polymer and expandable polymeric microspheres. A method for preparing a freeze-thaw damage resistant and scaling damage resistant cementitious composition including forming a mixture of a hydraulic cement and an admixture including an aqueous slurry of a water insoluble superabsorbent polymer and expanded polymeric microspheres.
Claims17
A freeze-thaw damage resistance and scaling damage resistance admixture for a cementitious composition comprising a stabilized aqueous slurry comprising water insoluble superabsorbent polymer particles in an amount from 0.1 to 30 percent by weight, based on the total weight of ingredients of the admixture other than water, and unexpanded, expandable polymeric microspheres in an amount from 50 to 99.9 percent by weight, based on the total weight of ingredients of the admixture other than water, and wherein the expanded polymeric microspheres have an average diameter of from about 24 μm to about 900 μm.
A freeze-thaw damage resistant and/or scaling damage resistant cementitious composition comprising hydraulic cement and an admixture, wherein the admixture comprises a stabilized aqueous slurry comprising water insoluble superabsorbent polymer particles in an amount from 0.1 to 30 percent by weight, based on the total weight of ingredients of the admixture other than water, and expanded polymeric microspheres in an amount from 50 to 99.9 percent by weight, based on the total weight of ingredients of the admixture other than water, wherein the expanded polymeric microspheres have an average diameter of from about 24 μm to about 900 μm.
Dependencies are inferred from the claim text.