Study on Evaluation of Strength Properties on Geopolymer Concrete with Different Combinations of Pozzolonic Materials

Geo-polymer concrete is totally different in materials and chemistry which is synthesized from waste material like fly-ash (Class F or C), rice husk along with binding solution which is free of cement. This paper gives an overall view of the process and parameters which effect the geo-polymer concrete till date. It is an inorganic 3D polymer which is synthesized by activation of aluminosilicate source like fly ash or GGBS (waste materials). Due to its high mechanical properties combined with substantial chemical resistance (magnesium or sulphate attack), low shrinkage and creep and environment friendly nature (very less amount of CO2 production in comparison with OPC), it is a novel construction material for future. Till date it was seen that the strength of geo-polymer concrete mostly depends on the molarities of the alkaline liquid NaOH& Na2SiO3 (are used for binding of materials.). It was seen that geo-polymer concrete made of fully Fly-ash or partial replacement by GGBS results with 80% reduction in CO2 emission compared to OPC, although the alkaline solution to some extent pollutes the environment.