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US 8,568,528 B2Granted
Iron-doped sulfo-belitic clinker
AssigneeVicat
InventorsLaury Barnes-Davin, Pascal Meric, Michel Pasquier, Guy Beauvent
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Abstract
The present invention relates to a novel iron-doped sulphoaluminate-belite clinker, a process for preparing this clinker, and also the use of the clinker for the preparation of hydraulic binder and, consequently, of grout, concrete or mortar.
Claims17
A sulfo-belitic clinker comprising, as phase composition, relative to the total weight of the clinker:
- from 5% to 60% of iron-doped calcium sulfo-aluminate phase corresponding to the formula C4AxFy$Z with
- x varying from 2 to 3,
- y varying from 0 to 0.5 and y being other than 0,
- and z varying from 0.8 to 1.2;
- from 0 to 25% of calcium aluminoferrite phase having a composition corresponding to the general formula C6Ax′Fy′, with x′ varying from 0 to 1.5 and y′ varying from 0.5 to 3;
- and
- from 20% to 70% of C2S belite phase;
- less than 10% of C11S4B phase.
5 more elements
Dependencies are inferred from the claim text.