Fly ash cementitious material and method of making a product

Details Fly ash cementitious material and method of making a product Fly ash cementitious material and method of making a product

C - Chemistry, Metallurgy

04

B

C04B 7/26 (2006.01) C04B 12/04 (2006.01) C04B 18/08 (2006.01) C04B 22/06 (2006.01) C04B 28/26 (2006.01)

Patent

CA 2243977

Rapid curing, high strength cementitious binder mixtures are provided containing fly ash and an alkali silicate binder that has a weight ratio of SiO2:M2O of about 0.20:1 to about 0.75:1 wherein M is selected from the group consisting of Li, Na, K, Ca and Mg. The cementitious binder mixtures can be mixed with aggregates to provide mortar and concrete mixtures. Any of the binder, mortar and concrete mixtures can be cured under elevated temperatures to yield high strenght products.

La présente invention concerne des mélanges de liants à base de ciment à durcissement rapide et de haute résistance, lesdits mélanges contenant des cendres volantes et un liant au silicate alcalin qui présente un rapport pondéral SiO¿2?/M¿2?O de l'ordre de 0,2 pour 1 à 0,75 pour 1, M appartenant au groupe constitué de Li, Na, K, Ca et Mg. Ces mélanges de liants à base de ciment peuvent être mélangés à des granulats pour produire des mélanges de mortier et de béton. Tout mélange de liants, de mortier et de ciment peut subir un durcissement à hautes températures en vue de l'obtention de produits de haute résistance.

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