12-09-2013 дата публикации
Номер: US20130233207A1
Принадлежит:
The invention relates to a sulfo-aluminous clinker with optimal setting time and short term compressive strengths, comprising a mixture of the following phases: calcium sulfoaluminate, or CA$, in amounts higher than 50% by weight of the mixture, belite, or CS, in amounts between 2 and 23%, 3CS 3C$ CaX, X being fluorine or chlorine, between 3 and 15% CACaX, X being fluorine or chlorine, between 2 and 12%, both fluorine and chlorine being altogether present in the mixture, and phase CS$ being absent. The invention also relates to a method for preparing this sulfo-aluminous clinker, and hydraulic binders comprising this clinker. 118-. (canceled)19. A sulfo-aluminous clinker comprising a mixture of:{'sub': 4', '3, '(i) calcium sulfoaluminate (CA$), in an amount greater than 50% by weight of said mixture,'}{'sub': '2', '(ii) belite (CS) in an amount ranging from 2% to 23% by weight of said mixture;'}{'sub': 2', '2, '(iii) 3CS3C$CaX, wherein X is fluorine or chlorine, in an amount ranging from 3% to 15% by weight of said mixture; and'}(iv) C11A7CaX2, wherein X is fluorine or chlorine, in an amount ranging from 2% to 12% by weight of said mixture;{'sub': 5', '2, 'wherein both fluorine and chlorine are present in said mixture, and CS$ is absent therefrom.'}20. The sulfo-aluminous clinker of claim 19 , comprising 3CS3C$CaFand CACaCl.21. The sulfo-aluminous clinker of claim 20 , further comprising CACaF.22. The sulfo-aluminous clinker of claim 19 , wherein said total combined amount of 3C$3C$CaXand CACaXis from 5% to 25% of said mixture.23. The sulfo-aluminous clinker of claim 19 , comprising from 0.01 to 10% by weight of at least one of: calcium sulfate or anhydrite (C$) claim 19 , a calcium aluminate (CA claim 19 , CA claim 19 , CAt) claim 19 , gehlenite (CAS) claim 19 , perovskite (CT) claim 19 , calcium iron titanate (CFT) claim 19 , merwinite (CMS) claim 19 , periclase claim 19 , free lime claim 19 , or ferrite (CAF or CF).24. The sulfo-aluminous clinker according to ...
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