Magnesium phosphate glass cements with ceramic-type properties
Abstract
Rapid setting magnesium phosphate (Mg glass) cementitious materials consisting of magnesium phosphate cement paste, polyborax and water-saturated aggregate exhibiting rapid setting and high early strength characteristics. The magnesium glass cement is prepared from a cation-leachable powder and a bivalent metallic ion-accepting liquid such as an aqueous solution of diammonium phosphate and ammonium polyphosphate. The cation-leachable powder includes a mixture of two different magnesium oxide powders processed and sized differently which when mixed with the bivalent metallic ion-accepting liquid provides the magnesium glass cement consisting primarily of magnesium ortho phosphate tetrahydrate, with magnesium hydroxide and magnesium ammonium phosphate hexahydrate also present. The polyborax serves as a set-retarder. The resulting magnesium mono- and polyphosphate cements are particularly suitable for use as a cementing matrix in rapid repair systems for deteriorated concrete structures as well as construction materials and surface coatings for fireproof structures.
- Inventors:
-
- Mastic Beach, NY
- Port Jefferson, NY
- Issue Date:
- Research Org.:
- Associated Universities, Inc., Upton, NY (United States)
- OSTI Identifier:
- 864909
- Patent Number(s):
- 4436555
- Application Number:
- 06/422,510
- Assignee:
- United States of America as represented by United States (Washington, DC)
- Patent Classifications (CPCs):
-
C - CHEMISTRY C03 - GLASS C03C - CHEMICAL COMPOSITION OF GLASSES, GLAZES, OR VITREOUS ENAMELS
C - CHEMISTRY C04 - CEMENTS C04B - LIME, MAGNESIA
- DOE Contract Number:
- AC02-76CH00016
- Resource Type:
- Patent
- Country of Publication:
- United States
- Language:
- English
- Subject:
- magnesium; phosphate; glass; cements; ceramic-type; properties; rapid; setting; mg; cementitious; materials; consisting; cement; paste; polyborax; water-saturated; aggregate; exhibiting; strength; characteristics; prepared; cation-leachable; powder; bivalent; metallic; ion-accepting; liquid; aqueous; solution; diammonium; ammonium; polyphosphate; mixture; oxide; powders; processed; sized; mixed; provides; primarily; ortho; tetrahydrate; hydroxide; hexahydrate; serves; set-retarder; resulting; mono-; particularly; suitable; cementing; matrix; repair; systems; deteriorated; concrete; structures; construction; surface; coatings; fireproof; surface coating; cementitious material; particularly suitable; aqueous solution; magnesium oxide; oxide powder; oxide powders; phosphate glass; ammonium phosphate; magnesium phosphate; surface coatings; bivalent metallic; cementitious materials; magnesium hydroxide; rapid setting; construction materials; air systems; materials consisting; /106/501/
Citation Formats
Sugama, Toshifumi, and Kukacka, Lawrence E. Magnesium phosphate glass cements with ceramic-type properties. United States: N. p., 1984.
Web.
Sugama, Toshifumi, & Kukacka, Lawrence E. Magnesium phosphate glass cements with ceramic-type properties. United States.
Sugama, Toshifumi, and Kukacka, Lawrence E. Tue .
"Magnesium phosphate glass cements with ceramic-type properties". United States. https://www.osti.gov/servlets/purl/864909.
@article{osti_864909,
title = {Magnesium phosphate glass cements with ceramic-type properties},
author = {Sugama, Toshifumi and Kukacka, Lawrence E},
abstractNote = {Rapid setting magnesium phosphate (Mg glass) cementitious materials consisting of magnesium phosphate cement paste, polyborax and water-saturated aggregate exhibiting rapid setting and high early strength characteristics. The magnesium glass cement is prepared from a cation-leachable powder and a bivalent metallic ion-accepting liquid such as an aqueous solution of diammonium phosphate and ammonium polyphosphate. The cation-leachable powder includes a mixture of two different magnesium oxide powders processed and sized differently which when mixed with the bivalent metallic ion-accepting liquid provides the magnesium glass cement consisting primarily of magnesium ortho phosphate tetrahydrate, with magnesium hydroxide and magnesium ammonium phosphate hexahydrate also present. The polyborax serves as a set-retarder. The resulting magnesium mono- and polyphosphate cements are particularly suitable for use as a cementing matrix in rapid repair systems for deteriorated concrete structures as well as construction materials and surface coatings for fireproof structures.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {1984},
month = {3}
}