Generally About Geopolymer Foams

Present paper deals with the brief summary of literature in the topic of geopolymer foams using various processes and materials. Geopolymers are amorphous threedimensional aluminosilicate materials which can be produced at ambient or elevated temperature by alkaline activation of aluminosilicates. Alkali activation of these materials together with chemical foaming agent (aluminum powder, hydrogen peroxide or sodium perborate) led to the synthesis of inorganic foam. Reaction between aluminum powder and alkali activator or decomposition of hydrogenperoxide in geopolymers cause porous structures. Geopolymer foams are fireresistant materials and hence, fabricating geopolymer foams with enhanced thermal resistivity can be considered as an effective way of their usage.