Typical geopolymers on basis FeOOH-Fe(OH), AlOOH-Al(OH)3, Fex[PO4]y(OH,O)z very often contain adsorbed amorphous silica (as well as SO4, halogens, hevy metals, AsO4 etc.). During their transformation in time (drying, oxydation, ordering, crystallization) silicates able to arise and alumosilicates in their number.
Geopolymers are supposed to be amorphous and fully condensed aluminosilicates (only Q4 species). Generally , Si/Al ratio ranges between 1 and 2 . Charges are compensated by alkali cation, usually Na and K but Li, Cs have also been used.
But in my opinion, a working definition is still lacking.
Is the temperature important factor in the production of geopolymers
The alkaline activation of source materials known as the result of geopolymerization, and the geopolymerization are exothermic release heat during its geopolymerisation reaction that is translated into an important temperature increase. The important of heat quantity could enhance the gel binders of geopolymers structure that could be evaluated by change in compressive strength.
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