Method in and for the manufacture of concrete including light concrete from an aqueous mass containing limestone material comprising dry grinding of at least part of the limestone material together with a silicon material of fine grain of the class in which in weight by volume of the material increases when grinding, continuing said grinding until at least 95% of the ground material passes through a sieve with a mesh opening of 0 063 mm. and mixing silicon material and at least one limestone from the group consisting of quicklime, slaked lime, cement and blast furnace slag and including the material obtained by said grinding with water. (Machine-translation by Google Translate, not legally binding)
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