Alkaline resistant phosphate glasses and method of preparation and use thereof
AssigneesMo-Sci Corporation, The Curators of the University of Missouri
InventorsRichard K. Brow, Signo T. Reis, Mariano Velez, Delbert E. Day
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Abstract
A substantially alkaline resistant calcium-iron-phosphate (CFP) glass and methods of making and using thereof. In one application, the CFP glass is drawn into a fiber and dispersed in cement to produce glass fiber reinforced concrete (GFRC) articles having the high compressive strength of concrete with the high impact, flexural and tensile strength associated with glass fibers.
Claims30
A phosphate glass composition comprising at least one calcium source, at least one phosphate source, at least one iron source, and Y2O3, wherein said composition has an atomic ratio of Ca/P of about 0.04 to about 0.50, an atomic ratio of O/P of about 3.10 to about 3.55 and an atomic ratio of Fe/P of about 0.005 to about 0.42.
A method of making a calcium-iron-phosphate (CFP) glass, said method comprising:
- combining and mixing at least one calcium source, a phosphate source, and an iron source, and Y2O3, to form a homogeneous CFP mixture;
- melting said CFP mixture to form a CFP glass composition,
- wherein an atomic ratio of Ca/P in the CFP glass composition is about 0.04 to about 0.50, an atomic ratio of O/P in the CFP glass composition is about 3.10 to about 3.55, and an atomic ratio of Fe/P in the CFP glass composition is about 0.005 to about 0.42.
A waste form prepared according to method 28.
Dependencies are inferred from the claim text.