Geopolymer concrete: Actually, the geopolymer gel forms the C-S-H gel in concrete cement. C-S-H stands for calcium silicate hydrate gel, it is formed when water is added to the cement and hydration process will take place. The response period is very quick and the river relieving period should be in between 24 to 48 hours. Geopolymer concrete is manufactured with the help of waste material like fly ash and ground granulated blast furnace slag. First, we have to process the fly ash as well as ground granulated blast furnace slag before its actual use to make polymer concrete.