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, exhibits 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:
- Issue Date:
- OSTI Identifier:
- 5827653
- Application Number:
- ON: DE83018059
- Assignee:
- ERA-08-054284; EDB-83-177671
- DOE Contract Number:
- AC02-76CH00016
- Resource Type:
- Patent
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 36 MATERIALS SCIENCE; CEMENTS; CONCRETES; REPAIR; BORAX; COMPRESSION STRENGTH; CURING; GLASS; HYDRATES; MAGNESIUM PHOSPHATES; MECHANICAL STRUCTURES; POROSITY; POWDERS; ALKALI METAL COMPOUNDS; ALKALINE EARTH METAL COMPOUNDS; BORATES; BORON COMPOUNDS; BUILDING MATERIALS; MAGNESIUM COMPOUNDS; MATERIALS; MECHANICAL PROPERTIES; OXYGEN COMPOUNDS; PHOSPHATES; PHOSPHORUS COMPOUNDS; SODIUM COMPOUNDS; 360601* - Other Materials- Preparation & Manufacture
Citation Formats
Sugama, T, and Kukacka, L E. Magnesium-phosphate-glass cements with ceramic-type properties. United States: N. p., 1982.
Web.
Sugama, T, & Kukacka, L E. Magnesium-phosphate-glass cements with ceramic-type properties. United States.
Sugama, T, and Kukacka, L E. Thu .
"Magnesium-phosphate-glass cements with ceramic-type properties". United States.
@article{osti_5827653,
title = {Magnesium-phosphate-glass cements with ceramic-type properties},
author = {Sugama, T and Kukacka, L E},
abstractNote = {Rapid setting magnesium phosphate (Mg glass) cementitious materials consisting of magnesium phosphate cement paste, polyborax and water-saturated aggregate, exhibits 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 = {1982},
month = {9}
}