| abstract |
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 Al2O3 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 1 to 20 % by weight is added to the mixture as an activator. |