Activated aluminosilicate binder
AssigneeInternational Mineral Technology AG
InventorSuz-Chung Ko
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Abstract
An activated aluminosilicate binder containing aluminosilicates, calcium sulphate and an activator containing alkali metal salts is disclosed. The aluminosilicates are selected from a group consisting of blast furnace slag, clay, marl and industrial by-products, such as fly ash, and has an Al2O3 content greater than 5% by weight. Blast furnace slag is present in an amount less than 35% by weight, and cement kiln dust, in an amount of from 1 to 20% by weight, is added to the mixture as an activator.
Claims12
An activated aluminosilicate binder composition containing aluminosilicates, calcium sulphate and an activator containing alkali metal salts, wherein the aluminosilicates are selected from a group consisting of blast furnace slag, clay, marl and industrial by-products, the aluminosilicates having an Al2O3 content greater than 5% by weight of the composition, and wherein cement kiln dust, in an amount of from 1 to 20% by weight of the composition, is included as an activator.
Dependencies are inferred from the claim text.