Hydraulic binder

C - Chemistry – Metallurgy – 04 – B

Patent

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C04B 7/21 (2006.01) C04B 28/08 (2006.01)

Patent

CA 2562115

An alkali-activated hydraulic binder containing the following essential constituents: slag and aluminium silicate, wherein the amount of slag, particularly blast furnace slag, amounts to = 20 % by weight, aluminium silicate different from blast furnace slag, e.g. fly ash and natural aluminium silicate such as basalt, clay, marl, andesite or zeolite amounts to 5 - 75 % by weight and an alkali activator is provided in an amount, which corresponds to an Na2O equivalent defined as (Na2O + 0,658 K2O) (ASTM C 150), ranging from 0.7 % by weight and 4 % by weight, respectively in relation to the overall mixture.

Liant hydraulique à activation par des alcalis et contenant des scories et des silicates d'aluminium, qui contient en tant que constituants essentiels du mélange, des scories, en particulier des scories de faut fourneau, dans des quantités = 20 % en poids, des silicates d'aluminium différents des scories de haut fourneau, tels que par ex. des cendres volantes et des silicates d'aluminium naturels tels que le basalte, l'argile, la marne, l'andésite ou la zéolithe, dans des quantités de 5 % en poids à 75 % en poids et un activateur de type alcali dans une quantité correspondant à un équivalent Na2O défini comme (Na2O + 0,658 K2O) (ASTM C 150) de 0,7 % en poids à 4 % en poids, par rapport au poids du mélange total.

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