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Phosphate-bonded calcium aluminate cements

Patent ·
OSTI ID:868928
 [1]
  1. Mastic Beach, NY
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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:
ASSOC UNIVERSITIES INC
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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Related Subjects

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