Particulate compositions for the formation of geopolymers, their use and methods for forming geopolymers therewith, and geopolymers obtained therefrom

A geopolymer obtained by mixing a dry particulate composition with water, wherein the dry particulate composition comprises (i) an alkali metal hydroxide, (ii) an alkali metal silicate, and (iii) an aluminosilicate, wherein at least 45 wt.-% of the aluminosilicate is in an amorphous state, based on the total weight of aluminosilicate in the composition, and the aluminosilicate has a product of the specific surface area in m2/g and the amorphous phase content in the range from 5 to 15.

A dry particulate composition for forming a geopolymer, comprising:

• (i) an alkali metal hydroxide, (ii) an alkali metal silicate, and (iii) an aluminosilicate, wherein at least 45 wt.-% of the aluminosilicate is in an amorphous state, based on the total weight of aluminosilicate in the composition, and the aluminosilicate has a product of the specific surface area in m2/g and the amorphous phase content in the range from 1 to 15 and wherein the aluminosilicate has a specific surface area in the range from 7 to 15 m2/g.