Composition and application of novel sprayable phosphate cement (grancrete) that bonds to styrofoam
AssigneeUchicago Argonne, LLC
InventorsArun S. Wagh, James W. Paul, Jr.
Life of this patent
Estimating the term…
Abstract
A dry mix particulate composition of a calcined oxide of Mg and/or Ca, an acid phosphate, and fly ash or equivalent, wherein the calcined oxide is present in the range of from about 17% to about 40% by weight and the acid phosphate is present in the range of from about 29% to about 52% by weight and the fly ash or equivalent is present in the range of from about 24% to about 39% by weight when sand is added to the dry mix, it is present in the range of from about 39% to about 61% by weight of the combined dry mix and sand. A method of forming a structural member is also disclosed wherein an aqueous slurry of about 8–12 pounds of water is added to dry mix and sand.
Claims20
A dry mix particulate composition, comprising a calcined oxide of Mg and/or Ca, an acid phosphate, and fly ash or equivalent, wherein said calcined oxide is present in the range of from about 17% to about 40% by weight and said acid phosphate is present in the range of from about 29% to about 52% by weight and said fly ash or equivalent is present in the range of from about 24% to about 39% by weight and wherein the weight ratio of calcined oxide to acid phosphate is about 1.
A method of forming a vertical structural member, comprising applying an aqueous slurry of a dry mix of a calcined oxide of Mg and/or Ca and an acid phosphate and fly ash or an equivalent and sand, wherein the calcined oxide is present in the range of from about 17% to about 40% by weight and the acid phosphate is present in the range of from about 29% to about 52% by weight and the fly ash or equivalent is present in the range of from about 24% to about 39% by weight and sand is present in the range of from about 39% to about 61% by weight of the dry mix and sand to a substrate, the weight ratio of calcined oxide to acid phosphate being about 1,
- and allowing the slurry to cure, the slurry being of a consistency so as not to drip or sag and starting to harden upon application.
A dry mix particulate composition, comprising a calcined MgO, a potassium acid phosphate, and fly ash or equivalent, wherein said calcined MgO is present in the range of from about 17% to about 40% by weight and said potassium acid phosphate is present in the range of from about 29% to about 52% by weight and said fly ash or equivalent is present in the range of from about 24% to about 39% by weight, and wherein the weight ratio of calcined MgO to potassium acid phosphate is about one.
Dependencies are inferred from the claim text.