New advances in the carbonation of aluminous cement. Alkaline hydrolisis
The carbonation process of aluminous cement in presence of high alkali content is studied. In this work, the formation of a compound which formula is close to K4Al6(CO3)11-x(OH)2x(H2O)y is shown for the studies samples. The aluminous cement carbonation in alkali presence take place, at least, in two stages. In a first stage the aluminium and potassium carbonate hydrate joint to CaCO3 is formed. Later, that aluminium potassium carbonate hydrate is developed toward the aluminium hydroxide formation.
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