Activated aluminosilicate binder

Details Activated aluminosilicate binder Activated aluminosilicate binder

C - Chemistry, Metallurgy

04

B

C04B 7/32 (2006.01) C04B 18/16 (2006.01) C04B 28/06 (2006.01) C04B 28/08 (2006.01)

Patent

CA 2336077

The invention describes an activated aluminosilicate binder containing aluminosilicates, calcium sulphate and an activator containing alkali metal salts, wherein the aluminosilicates are selected from the group consisting of blast furnace slag, clay, marl and industrial by-products such as fly ash with the proviso that the A12O3 content is greater than 5 % by weight, wherein blast furnace slag is present in an amount of less than 35 % by weight and wherein cement kiln dust in an amount of from I to 20 % by weight is added to the mixture as an activator.

L'invention concerne un liant activé à base d'aluminosilicates contenant des aluminosilicates, du sulfate de calcium et un activateur contenant des sels de métaux alcalins, les aluminosilicates étant sélectionnés dans le groupe formé par du laitier, de l'argile, de la marne et des produits dérivés industriels tels que la cendre légère, à condition que la teneur en Al>2<O>3< soit supérieure à 5 % en poids; la teneur en laitier est inférieure à 35 % en poids et on ajoute comme activateur au mélange une quantité de poussière de four à ciment comprise entre 1 et 20 % en poids.

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