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US 9,434,646 B2Granted
Phosphorus-doped sulfo-belitic clinker
AssigneeVicat
InventorsMichel Pasquier, Laury Barnes-Davin, Pascal Meric, Guy Beauvent
Life of this patent
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Abstract
A new phosphorus-doped sulfo-belite-based clinker, a method for preparing this clinker, as well as the use of the clinker for preparing a hydraulic binder and, later on, grout, concrete or mortar.
Claims16
A sulfo-aluminate-based clinker, having a phase composition, with respect to the total weight of the clinker, comprising:
- from 5 to 60% of an iron-doped calcium sulfo-aluminate phase corresponding to a formula represented by C4AxFy$zwith:
- x varying from 2 to 3,
- y varying from 0.05 to 0.5, and
- z varying from 0.8 to 1.2;
- from 0 to 25% of a calcium aluminoferrite phase corresponding to a general formula represented by C6Ax′Fy′, with x′ varying from 0 to 1.5 and y′ varying from 0.5 to 3;
- from 20 to 70% of a belite C2S phase;
- less than 10% of a C11S4B phase;
- and
- more than 0.3% of P2O5,
- wherein:
- C represents CaO;
- A represents Al2O3;
- F represents Fe2O3;
- S represents SiO2;
- and
- $ represents SO3.
13 more elements
Dependencies are inferred from the claim text.