Phosphate-bonded calcium aluminate cements

Title: Phosphate-bonded calcium aluminate cements

Full Record
Other Related Research

Abstract

A method is described for making a rapid-setting phosphate-bonded cementitious material. A powdered aluminous cement is mixed with an aqueous solution of ammonium phosphate. The mixture is allowed to set to form an amorphous cementitious material which also may be hydrothermally treated at a temperature of from about 120.degree. C. to about 300.degree. C. to form a crystal-containing phosphate-bonded material. Also described are the cementitious products of this method and the cement composition which includes aluminous cement and ammonium polyphosphate.

Inventors:

Sugama, Toshifumi ^[1]

(Mastic Beach, NY)

Issue Date:: 1993-01-01

Research Org.:: ASSOC UNIVERSITIES INC

OSTI Identifier:: 868928

Patent Number(s):: 5246496

Assignee:: Associated Universities, Inc. (Washington, DC) BNL

DOE Contract Number:: AC02-76CH00016

Resource Type:: Patent

Country of Publication:: United States

Language:: English

Subject:: phosphate-bonded; calcium; aluminate; cements; method; described; rapid-setting; cementitious; material; powdered; aluminous; cement; mixed; aqueous; solution; ammonium; phosphate; mixture; allowed; set; form; amorphous; hydrothermally; treated; temperature; 120; degree; 300; crystal-containing; products; composition; polyphosphate; cementitious material; cement composition; aqueous solution; ammonium phosphate; hydrothermally treated; thermally treated; calcium aluminate; /106/

Citation Formats


                    Sugama, Toshifumi. Phosphate-bonded calcium aluminate cements.  United States: N. p., 1993. 
        Web.

Copy to clipboard


                    Sugama, Toshifumi. Phosphate-bonded calcium aluminate cements.  United States.

Copy to clipboard


                    Sugama, Toshifumi. Fri .  
        "Phosphate-bonded calcium aluminate cements".  United States.  https://www.osti.gov/servlets/purl/868928.

Copy to clipboard


                    
@article{osti_868928,

  title        = {Phosphate-bonded calcium aluminate cements},

  author       = {Sugama, Toshifumi},

  abstractNote = {A method is described for making a rapid-setting phosphate-bonded cementitious material. A powdered aluminous cement is mixed with an aqueous solution of ammonium phosphate. The mixture is allowed to set to form an amorphous cementitious material which also may be hydrothermally treated at a temperature of from about 120.degree. C. to about 300.degree. C. to form a crystal-containing phosphate-bonded material. Also described are the cementitious products of this method and the cement composition which includes aluminous cement and ammonium polyphosphate.},

  doi          = {},

  journal      = {},
number       = ,

  volume       = ,

  place        = {United States},

  year         = {1993},

  month        = {1}

}

Copy to clipboard

Patent:

View Patent

Save / Share:

Export Metadata

Save to My Library

Similar records in DOE Patents and OSTI.GOV collections:

Phosphate-bonded calcium aluminate cements

Patent Sugama, T.

A method is described for making a rapid-setting phosphate-bonded cementitious material. A powdered aluminous cement is mixed with an aqueous solution of ammonium phosphate. The mixture is allowed to set to form an amorphous cementitious material which also may be hydrothermally treated at a temperature of from about 120 C to about 300 C to form a crystal-containing phosphate-bonded material. Also described are the cementitious products of this method and the cement composition which includes aluminous cement and ammonium polyphosphate. 10 figures.
Magnesium phosphate glass cements with ceramic-type properties

Patent Sugama, Toshifumi (Mastic Beach, NY); Kukacka, Lawrence E. (Port Jefferson, NY)

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.more »« less
Full Text Available
Light weight phosphate cements

Patent Wagh, Arun S. (Naperville, IL); Natarajan, Ramkumar, (Woodridge, IL); Kahn, David (Miami, FL)

A sealant having a specific gravity in the range of from about 0.7 to about 1.6 for heavy oil and/or coal bed methane fields is disclosed. The sealant has a binder including an oxide or hydroxide of Al or of Fe and a phosphoric acid solution. The binder may have MgO or an oxide of Fe and/or an acid phosphate. The binder is present from about 20 to about 50% by weight of the sealant with a lightweight additive present in the range of from about 1 to about 10% by weight of said sealant, a filler, and water sufficientmore »« less
Full Text Available
Methods of use of calcium hexa aluminate refractory linings and/or chemical barriers in high alkali or alkaline environments

Patent McGowan, Kenneth A; Cullen, Robert M; Keiser, James R; ...

A method for improving the insulating character/and or penetration resistance of a liner in contact with at least one of an alkali and/or alkaline environments is provided. The method comprises lining a surface that is subject to wear by an alkali environment and/or an alkaline environment with a refractory composition comprising a refractory aggregate consisting essentially of a calcium hexa aluminate clinker having the formula CA.sub.6, wherein C is equal to calcium oxide, wherein A is equal to aluminum oxide, and wherein the hexa aluminate clinker has from zero to less than about fifty weight percent C.sub.12A.sub.7, and wherein greatermore »« less
Full Text Available
Method of waste stabilization via chemically bonded phosphate ceramics

Patent Wagh, Arun S. (Joliet, IL); Singh, Dileep (Naperville, IL); Jeong, Seung-Young (Hinsdale, IL)

A method for regulating the reaction temperature of a ceramic formulation process is provided comprising supplying a solution containing a monovalent alkali metal; mixing said solution with an oxide powder to create a binder; contacting said binder with bulk material to form a slurry; and allowing the slurry to cure. A highly crystalline waste form is also provided consisting of a binder containing potassium and waste substrate encapsulated by the binder.
Full Text Available

Similar Records