Synthesis of the U phase (4CaO . 0.9Al 2O 3 . 1.1SO 3 . 0.5Na 2O . 16H 2O)

A mineral called “U phase” was recently identified in cement-based systems at high alkali concentration. This sodium-substituted AFm phase with chemical composition 4CaO.0.9Al 2O 3.1.1SO 3.0.5Na 2O.16H 2O can induce deleterious effects through its secondary formation and its transformation into ettr...

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Veröffentlicht in:	Cement and concrete research 1997, Vol.27 (1), p.7-13
Hauptverfasser:	Li, G., Le Bescop, P., Moranville-Regourd, M.
Format:	Artikel
Sprache:	eng
Schlagworte:	Analysis of cement phases and constituents Applied sciences Buildings. Public works Cement concrete constituents Cements Exact sciences and technology Materials Properties of anhydrous and hydrated cement, test methods
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