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US 10,196,306 B2Granted
Ultra-fast setting cement based on amorphous calcium aluminate
AssigneeKerneos
InventorBruno Touzo
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Abstract
The present invention relates to an ultra-fast setting cement composition containing at least amorphous calcium aluminate including by weight, as compared to amorphous calcium aluminate total weight: (a) from 35 to 55% of calcium oxide CaO (C), (b) from 19 to 55% of alumina Al2O3 (A), the C/A molar ratio being higher than or equal to 1.5, (c) from 0 to 10% of silica SiO2, with the amorphous calcium aluminate including (d) from 5 to 16% of iron oxide Fe2O3. Also disclosed is a method to produce the cement composition, as well as to uses thereof.
Claims25
An ultra-fast setting cement composition comprising:
- at least amorphous calcium aluminate comprising by weight, as compared to amorphous calcium aluminate total weight:
- (a) from 35 to 55% of calcium oxide CaO (C),
- (b) from 19 to 55% of alumina Al2O3 (A), the C/A molar ratio being higher than or equal to 1.5,
- (c) from 0 to 10% of silica SiO2, and
- (d) from 5 to 16% iron oxide Fe2O3,
- wherein at least 60% of said amorphous calcium aluminate is in an amorphous phase.
3 more elements
Dependencies are inferred from the claim text.