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Title: Phosphate-bonded calcium aluminate cements

Patent ·
OSTI ID:868928
 [1]
  1. Mastic Beach, NY
+ Show Author Affiliations

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.

Research Organization:
Associated Universities, Inc., Upton, NY (United States)
DOE Contract Number:
AC02-76CH00016
Assignee:
Associated Universities, Inc. (Washington, DC)
Patent Number(s):
US 5246496
OSTI ID:
868928
Country of Publication:
United States
Language:
English

References (4)

Strength Development in Phosphate-Bonded Calcium Aluminate Cements journal May 1991
Studies of strength mechanism in newly developed chemically bonded ceramics in the system CaOSiO2P2O5H2O journal January 1988
Investigation of hydration phases in the system CaO–SiO 2 -P 2 O 5 -H 2 O journal August 1988
Hydrothermal Preparation of Calcium Hydroxyapatite Powders journal June 1990

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Journal Article · Mon Nov 01 00:00:00 EST 1993 · Cement and Concrete Research; (United States) · OSTI ID:868928
CITRIC ACID AS A SET RETARDER FOR CALCIUM ALUMINATE PHOSPHATE CEMENTS.
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Related Subjects

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
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