In 1978, Davidovits said when alkaline solution mixed with materials such a Fly ash and GGBS binder is obtained
through polymerisation reaction. These alternative binder material must contain high amount of Silicon (Si) and Aluminium
(Al) which in turn react with alkaline liquid. Hence this concrete is named as Geopolymer Concrete (GPC).The commonly used
binder material in GPC are Fly ash, GGBS, Rice husk and Metakoline.
Geopolymers are formed when silicates and aluminates are linked with covalent bonds. Geopolymerisation is a reaction that
synthetically incorporates minerals (geosynthesis) that involves naturally occurring alumina – silicates.
