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Title: 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:
 [1];  [2]
  1. (Mastic Beach, NY)
  2. (Port Jefferson, NY)
Publication Date:
Research Org.:
ASSOC UNIVERSITIES INC
OSTI Identifier:
864909
Patent Number(s):
US 4436555
Application Number:
06/422,510
Assignee:
United States of America as represented by United States (Washington, DC) BNL
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}
}

Patent:

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